added unit testing, and started implementing unit tests...phew

This commit is contained in:
Josh Burman
2019-03-12 22:28:02 -04:00
parent 74aad4a957
commit e8c2539f1b
3489 changed files with 464813 additions and 88 deletions

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sudo: false
language: node_js
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- "10"
before_install:
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notifications:
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irc: "irc.freenode.org#nodejitsu"

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# CHANGELOG
### 4.3.0 (2018/12/23)
- [#30] Precompile before publishing to `npm`.
- [#32] Add new option to increase default `highWaterMark` value.
### 4.2.0 (2018/06/11)
- [#26] Do not use copy-by-value for `this.level`.
- [#25] Wrap calls to `format.transform` with try / catch.
- [#24] Use `readable-stream` package to get the _final semantics across all versions of Node.
### 4.1.0 (2018/05/31)
- [#23] Revert to prototypal-based syntax for backwards compatibility.
### 4.0.0 (2018/05/24)
- **BREAKING** Update transports to use ES6 classes. Creation of
`TransportStream` and `LegacyTransportStream` now requires the `new` keyword.
**No longer works**
``` js
const Transport = require('winston-transport');
const transport = Transport({
log: (info, callback) => { /* log something */ }
});
```
**Do this instead**
``` js
const Transport = require('winston-transport');
const transport = new Transport({
log: (info, callback) => { /* log something */ }
});
```
### 3.3.0 (2018/05/24)
**Unpublished:** overlooked that 26f816e introduced a breaking change.
- [#21] Do not log when there is no info object.
- [#20] Add silent options to typings.
- [#19] Refactor test fixtures to use es6-classes.
- [#18] Use triple-beam for info object constants.
- [#17] Add linting and Node v10 to the travis build of the project.
### 3.2.1 (2018/04/25)
- [#16] Reorder in TS defs: namespace must come after class in order for delcaration merging to work as expected.
### 3.2.0 (2018/04/22)
- [#13] Add silent support to LegacyTransportStream. Fixes [#8].
- [#14] Ensure that if a Transport-specific format is provided it is invoked on each chunk before passing it to `.log`. Fixes [#12].
- [#11] Revice `d.ts`
- Add `.travis.yml`.
- Documentation updates:
- [#5] Update deprecated link.
- [#7] Correct `this` reference in `README.md` by using an arrow function.
### 3.1.0 (2018/04/06)
- [#10] Add `silent` option to `TransportStream`. Still needs to be implemented
for `LegacyTransportStream`.
- Bump `mocha` to `^5.0.5`.
- Bump `nyc` to `^11.6.0`.
### 3.0.1 (2017/10/01)
- [#4] Use ES6-class for defining Transport in `README.md`.
- [#4] Do not overwrite prototypal methods unless they are provided in the options.
### 3.0.0 (2017/09/29)
- Use `Symbol.for('level')` to lookup immutable `level` on `info` objects.
### 2.1.1 (2017/09/29)
- Properly interact with the `{ format }`, if provided.
### 2.1.0 (2017/09/27)
- If a format is defined use it to mutate the info.
### 2.0.0 (2017/04/11)
- [#2] Final semantics for `winston-transport` base implementations:
- `TransportStream`: the new `objectMode` Writable stream which should be the base for all future Transports after `winston >= 3`.
- `LegacyTransportStream`: the backwards compatible wrap to Transports written for `winston < 3`. There isn't all that much different for those implementors except that `log(level, message, meta, callback)` is now `log(info, callback)` where `info` is the object being plumbed along the objectMode pipe-chain. This was absolutely critical to not "break the ecosystem" and give [the over 500 Transport package authors](https://www.npmjs.com/search?q=winston) an upgrade path.
- Along with all the code coverage & `WritableStream` goodies:
- 100% code coverage for `TransportStream`
- 100% code coverage for `LegacyTransportStream`
- Implementation of `_writev` for `TransportStream`
- Implementation of `_writev` for `LegacyTransportStream`
### 1.0.2 (2015/11/30)
- Pass the write stream callback so that we can communicate backpressure up the chain of streams.
### 1.0.1 (2015/11/22)
- First `require`-able version.
### 1.0.0 (2015/11/22)
- Initial version.
[#2]: https://github.com/winstonjs/winston-transport/pull/2

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The MIT License (MIT)
Copyright (c) 2015 Charlie Robbins & the contributors.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# winston-transport
The base `TransportStream` implementation for `winston >= 3`. Use these to
write ecosystem Transports for `winston`.
## Usage
``` js
const Transport = require('winston-transport');
const util = require('util');
//
// Inherit from `winston-transport` so you can take advantage
// of the base functionality and `.exceptions.handle()`.
//
module.exports = class CustomTransport extends Transport {
constructor(opts) {
super(opts);
//
// Consume any custom options here. e.g.:
// - Connection information for databases
// - Authentication information for APIs (e.g. loggly, papertrail,
// logentries, etc.).
//
}
log(info, callback) {
setImmediate(() => {
this.emit('logged', info);
});
// Perform the writing to the remote service
callback();
}
};
```
## Tests
Tests are written with `mocha`, `nyc`, `assume`, and
`abstract-winston-transport`. They can be run with `npm`:
``` bash
npm test
```
##### Author: [Charlie Robbins](https://github.com/indexzero)
##### LICENSE: MIT

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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">'use strict';
&nbsp;
const stream = require('stream');
const util = require('util');
&nbsp;
/**
* Constructor function for the TransportStream. This is the base prototype
* that all `winston &gt;= 3` transports should inherit from.
*
* @param {Object} opts Options for this TransportStream instance
* @param {String} opts.level HIGHEST level according to RFC5424.
* @param {Boolean} opts.handleExceptions If true, info with { exception: true } will be written.
* @param {Function} opts.log Custom log function for simple Transport creation
* @param {Function} opts.close Called on "unpipe" from parent
*/
var TransportStream = module.exports = function TransportStream(opts) {
stream.Writable.call(this, { objectMode: true });
opts = opts || {};
//
// TODO (indexzero): What do we do with formats on TransportStream
// instances? Should we do the same dance as in `winston.Logger`?
//
this.format = opts.format;
this.level = opts.level;
this.handleExceptions = opts.handleExceptions;
this.log = this.log || opts.log;
this.close = this.close || opts.close;
&nbsp;
var self = this;
&nbsp;
//
// Get the levels from the source we are piped from.
//
this.once('pipe', function (logger) {
//
// Remark (indexzero): this bookkeeping can only support multiple
// Logger parents with the same `levels`. This comes into play in
// the `winston.Container` code in which `container.add` takes
// a fully realized set of options with pre-constructed TransportStreams.
//
self.levels = logger.levels;
self.level = self.level || logger.level;
self.parent = logger;
});
&nbsp;
//
// If and/or when the transport is removed from this instance
//
this.once('unpipe', function (src) {
//
// Remark (indexzero): this bookkeeping can only support multiple
// Logger parents with the same `levels`. This comes into play in
// the `winston.Container` code in which `container.add` takes
// a fully realized set of options with pre-constructed TransportStreams.
//
<span class="missing-if-branch" title="else path not taken" >E</span>if (src === self.parent) {
this.parent = null;
if (self.close) {
self.close();
}
}
});
};
&nbsp;
util.inherits(TransportStream, stream.Writable);
&nbsp;
/*
* @private function _write(info)
* Writes the info object to our transport instance.
*/
TransportStream.prototype._write = function (info, enc, callback) {
if (info.exception &amp;&amp; !this.handleExceptions) {
return callback(null);
}
&nbsp;
//
// Remark: This has to be handled in the base transport now because we cannot
// conditionally write to our pipe targets as stream.
//
if (!this.level || this.levels[this.level] &gt;= this.levels[info.level]) {
return this.log(info, callback);
}
&nbsp;
return callback(null);
};
&nbsp;</pre></td></tr>
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<a href="index.html">All files</a> legacy.js
</h1>
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<span class="strong">69.23% </span>
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<span class='fraction'>18/26</span>
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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">'use strict';
&nbsp;
const util = require('util');
const TransportStream = require('./');
&nbsp;
/**
* Constructor function for the LegacyTransportStream. This is an internal wrapper
* `winston &gt;= 3` uses to wrap older transports implementing log(level, message, meta).
*
* @param {Object} opts Options for this TransportStream instance.
* @param {Transpot} opts.transport winston@2 or older Transport to wrap.
*/
var LegacyTransportStream = module.exports = function LegacyTransportStream(opts) {
opts = opts || {};
if (!opts.transport || typeof opts.transport.log !== 'function') {
throw new Error('Invalid transport, must be an object with a log method.');
}
&nbsp;
TransportStream.call(this, opts);
&nbsp;
var self = this;
this.transport = opts.transport;
this.level = opts.transport.level;
this.handleExceptions = opts.transport.handleExceptions;
&nbsp;
console.error([
`${opts.transport.name} is a legacy winston transport. Consider upgrading: `,
'- Upgrade docs: https://github.com/winstonjs/winston/tree/master/UPGRADE.md'
].join('\n'));
&nbsp;
//
// Properly bubble up errors from the transport to the LegacyTransportStream
// instance, but only once no matter how many times this transport is shared.
//
function <span class="fstat-no" title="function not covered" >transportError(</span>err) {
<span class="cstat-no" title="statement not covered" > self.emit('error', err, self.transport);</span>
}
&nbsp;
<span class="missing-if-branch" title="else path not taken" >E</span>if (!this.transport.__winstonError) {
this.transport.__winstonError = transportError;
this.transport.on('error', this.transport.__winstonError);
}
};
&nbsp;
util.inherits(LegacyTransportStream, TransportStream);
&nbsp;
/*
* @private function _write(info)
* Writes the info object to our transport instance.
*/
LegacyTransportStream.prototype._write = <span class="fstat-no" title="function not covered" >fu</span>nction (info, enc, callback) {
//
// Remark: This has to be handled in the base transport now because we cannot
// conditionally write to our pipe targets as stream.
//
<span class="cstat-no" title="statement not covered" > if (!this.level || this.levels[this.level] &gt;= this.levels[info.level]) {</span>
<span class="cstat-no" title="statement not covered" > this.transport.log(info.level, info.message, info, <span class="fstat-no" title="function not covered" >fu</span>nction () {});</span>
}
&nbsp;
<span class="cstat-no" title="statement not covered" > callback(null);</span>
};
&nbsp;
/*
* Clean up error handling state on the legacy transport associated
* with this instance.
*/
LegacyTransportStream.prototype.close = <span class="fstat-no" title="function not covered" >fu</span>nction () {
<span class="cstat-no" title="statement not covered" > if (this.transport.close) {</span>
<span class="cstat-no" title="statement not covered" > this.transport.close();</span>
}
&nbsp;
<span class="cstat-no" title="statement not covered" > if (this.transport.__winstonError) {</span>
<span class="cstat-no" title="statement not covered" > this.transport.removeListener('error', this.transport.__winstonError);</span>
}
};
&nbsp;</pre></td></tr>
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<td class="file medium" data-value="index.js"><a href="index.js.html">index.js</a></td>
<td data-value="68" class="pic medium"><div class="chart"><div class="cover-fill" style="width: 68%;"></div><div class="cover-empty" style="width:32%;"></div></div></td>
<td data-value="68" class="pct medium">68%</td>
<td data-value="25" class="abs medium">17/25</td>
<td data-value="55.56" class="pct medium">55.56%</td>
<td data-value="18" class="abs medium">10/18</td>
<td data-value="50" class="pct medium">50%</td>
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<h1>
<a href="../index.html">all files</a> / <a href="index.html">winston-transport/</a> index.js
</h1>
<div class='clearfix'>
<div class='fl pad1y space-right2'>
<span class="strong">68% </span>
<span class="quiet">Statements</span>
<span class='fraction'>17/25</span>
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<span class="quiet">Branches</span>
<span class='fraction'>10/18</span>
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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">'use strict';
&nbsp;
var stream = require('stream'),
util = require('util');
&nbsp;
var TransportStream = module.exports = function TransportStream(opts) {
stream.Writable.call(this, { objectMode: true });
opts = opts || {};
this.format = opts.format;
this.level = opts.level;
this.handleExceptions = opts.handleExceptions;
this.log = this.log || opts.log;
&nbsp;
var self = this;
&nbsp;
//
// Get the levels from the source we are piped from.
//
this.once('pipe', <span class="fstat-no" title="function not covered" >function (logger) {</span>
<span class="cstat-no" title="statement not covered" > self.levels = logger.levels;</span>
<span class="cstat-no" title="statement not covered" > self.level = self.level || logger.level;</span>
//
// TODO: Improve bookkeeping here to support pipe and unpipe
// from multiple LogStream parents (e.g. Containers)
//
<span class="cstat-no" title="statement not covered" > self.parent = logger;</span>
});
&nbsp;
//
// If and/or when the transport is removed from this instance
//
this.once('unpipe', <span class="fstat-no" title="function not covered" >function (src) {</span>
//
// TODO: Improve bookkeeping here to support pipe and unpipe
// from multiple LogStream parents (e.g. Containers)
//
<span class="cstat-no" title="statement not covered" > if (src === self.parent) {</span>
//
// Remark: this may not be the desired implementation since
// a single transport may be shared by multiple Logger
// instances.
//
// Remark: depending on the use-case we may need to clean up
// this.levels and this.level.
//
<span class="cstat-no" title="statement not covered" > this.parent = null;</span>
<span class="cstat-no" title="statement not covered" > if (self.close) {</span>
<span class="cstat-no" title="statement not covered" > self.close();</span>
}
}
});
};
&nbsp;
util.inherits(TransportStream, stream.Writable);
&nbsp;
/*
* @private function _write(info)
* Writes the info object to our transport instance.
*/
TransportStream.prototype._write = function (info, enc, callback) {
if (info.exception &amp;&amp; !this.handleExceptions) {
return callback(null);
}
&nbsp;
//
// Remark: This has to be handled in the base transport now because we cannot
// conditionally write to our pipe targets as stream.
//
<span class="missing-if-branch" title="else path not taken" >E</span>if (!this.level || <span class="branch-1 cbranch-no" title="branch not covered" >this.levels[this.level] &gt;= this.levels[info.level])</span> {
return this.log(info, callback);
}
&nbsp;
<span class="cstat-no" title="statement not covered" > return callback(null);</span>
};
&nbsp;</pre></td></tr>
</table></pre>
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TN:
SF:/Users/crobbins/Git/winstonjs/winston-transport/index.js
FN:16,TransportStream
FN:34,(anonymous_1)
FN:49,(anonymous_2)
FN:71,(anonymous_3)
FNF:4
FNH:4
FNDA:12,TransportStream
FNDA:4,(anonymous_1)
FNDA:2,(anonymous_2)
FNDA:21,(anonymous_3)
DA:3,1
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DA:16,1
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DA:25,12
DA:26,12
DA:27,12
DA:29,12
DA:34,12
DA:41,4
DA:42,4
DA:43,4
DA:49,12
DA:56,2
DA:57,2
DA:58,2
DA:59,1
DA:65,1
DA:71,1
DA:72,21
DA:73,1
DA:80,20
DA:81,17
DA:84,3
LF:27
LH:27
BRDA:18,0,0,12
BRDA:18,0,1,1
BRDA:26,1,0,12
BRDA:26,1,1,12
BRDA:27,2,0,12
BRDA:27,2,1,11
BRDA:42,3,0,4
BRDA:42,3,1,2
BRDA:56,4,0,2
BRDA:56,4,1,0
BRDA:58,5,0,1
BRDA:58,5,1,1
BRDA:72,6,0,1
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BRDA:72,7,0,21
BRDA:72,7,1,2
BRDA:80,8,0,17
BRDA:80,8,1,3
BRDA:80,9,0,20
BRDA:80,9,1,8
BRF:20
BRH:19
end_of_record
TN:
SF:/Users/crobbins/Git/winstonjs/winston-transport/legacy.js
FN:13,LegacyTransportStream
FN:35,transportError
FN:51,(anonymous_2)
FN:57,(anonymous_3)
FN:67,(anonymous_4)
FNF:5
FNH:1
FNDA:3,LegacyTransportStream
FNDA:0,transportError
FNDA:0,(anonymous_2)
FNDA:0,(anonymous_3)
FNDA:0,(anonymous_4)
DA:3,1
DA:4,1
DA:13,1
DA:14,3
DA:15,3
DA:16,2
DA:19,1
DA:21,1
DA:22,1
DA:23,1
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DA:26,1
DA:36,0
DA:39,1
DA:40,1
DA:41,1
DA:45,1
DA:51,1
DA:56,0
DA:57,0
DA:60,0
DA:67,1
DA:68,0
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DA:72,0
DA:73,0
LF:26
LH:18
BRDA:14,0,0,3
BRDA:14,0,1,2
BRDA:15,1,0,2
BRDA:15,1,1,1
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BRDA:15,2,1,1
BRDA:39,3,0,1
BRDA:39,3,1,0
BRDA:56,4,0,0
BRDA:56,4,1,0
BRDA:56,5,0,0
BRDA:56,5,1,0
BRDA:68,6,0,0
BRDA:68,6,1,0
BRDA:72,7,0,0
BRDA:72,7,1,0
BRF:16
BRH:7
end_of_record

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node_modules/winston-transport/dist/index.js generated vendored Normal file
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'use strict';
var util = require('util');
var Writable = require('readable-stream/writable');
var _require = require('triple-beam'),
LEVEL = _require.LEVEL;
/**
* Constructor function for the TransportStream. This is the base prototype
* that all `winston >= 3` transports should inherit from.
* @param {Object} options - Options for this TransportStream instance
* @param {String} options.level - Highest level according to RFC5424.
* @param {Boolean} options.handleExceptions - If true, info with
* { exception: true } will be written.
* @param {Function} options.log - Custom log function for simple Transport
* creation
* @param {Function} options.close - Called on "unpipe" from parent.
*/
var TransportStream = module.exports = function TransportStream() {
var _this = this;
var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
Writable.call(this, { objectMode: true, highWaterMark: options.highWaterMark });
this.format = options.format;
this.level = options.level;
this.handleExceptions = options.handleExceptions;
this.silent = options.silent;
if (options.log) this.log = options.log;
if (options.logv) this.logv = options.logv;
if (options.close) this.close = options.close;
// Get the levels from the source we are piped from.
this.once('pipe', function (logger) {
// Remark (indexzero): this bookkeeping can only support multiple
// Logger parents with the same `levels`. This comes into play in
// the `winston.Container` code in which `container.add` takes
// a fully realized set of options with pre-constructed TransportStreams.
_this.levels = logger.levels;
_this.parent = logger;
});
// If and/or when the transport is removed from this instance
this.once('unpipe', function (src) {
// Remark (indexzero): this bookkeeping can only support multiple
// Logger parents with the same `levels`. This comes into play in
// the `winston.Container` code in which `container.add` takes
// a fully realized set of options with pre-constructed TransportStreams.
if (src === _this.parent) {
_this.parent = null;
if (_this.close) {
_this.close();
}
}
});
};
/*
* Inherit from Writeable using Node.js built-ins
*/
util.inherits(TransportStream, Writable);
/**
* Writes the info object to our transport instance.
* @param {mixed} info - TODO: add param description.
* @param {mixed} enc - TODO: add param description.
* @param {function} callback - TODO: add param description.
* @returns {undefined}
* @private
*/
TransportStream.prototype._write = function _write(info, enc, callback) {
if (this.silent || info.exception === true && !this.handleExceptions) {
return callback(null);
}
// Remark: This has to be handled in the base transport now because we
// cannot conditionally write to our pipe targets as stream. We always
// prefer any explicit level set on the Transport itself falling back to
// any level set on the parent.
var level = this.level || this.parent && this.parent.level;
if (!level || this.levels[level] >= this.levels[info[LEVEL]]) {
if (info && !this.format) {
return this.log(info, callback);
}
var errState = void 0;
var transformed = void 0;
// We trap(and re-throw) any errors generated by the user-provided format, but also
// guarantee that the streams callback is invoked so that we can continue flowing.
try {
transformed = this.format.transform(Object.assign({}, info), this.format.options);
} catch (err) {
errState = err;
}
if (errState || !transformed) {
// eslint-disable-next-line callback-return
callback();
if (errState) throw errState;
return;
}
return this.log(transformed, callback);
}
return callback(null);
};
/**
* Writes the batch of info objects (i.e. "object chunks") to our transport
* instance after performing any necessary filtering.
* @param {mixed} chunks - TODO: add params description.
* @param {function} callback - TODO: add params description.
* @returns {mixed} - TODO: add returns description.
* @private
*/
TransportStream.prototype._writev = function _writev(chunks, callback) {
if (this.logv) {
var infos = chunks.filter(this._accept, this);
if (!infos.length) {
return callback(null);
}
// Remark (indexzero): from a performance perspective if Transport
// implementers do choose to implement logv should we make it their
// responsibility to invoke their format?
return this.logv(infos, callback);
}
for (var i = 0; i < chunks.length; i++) {
if (!this._accept(chunks[i])) continue;
if (chunks[i].chunk && !this.format) {
this.log(chunks[i].chunk, chunks[i].callback);
continue;
}
var errState = void 0;
var transformed = void 0;
// We trap(and re-throw) any errors generated by the user-provided format, but also
// guarantee that the streams callback is invoked so that we can continue flowing.
try {
transformed = this.format.transform(Object.assign({}, chunks[i].chunk), this.format.options);
} catch (err) {
errState = err;
}
if (errState || !transformed) {
// eslint-disable-next-line callback-return
chunks[i].callback();
if (errState) {
// eslint-disable-next-line callback-return
callback(null);
throw errState;
}
} else {
this.log(transformed, chunks[i].callback);
}
}
return callback(null);
};
/**
* Predicate function that returns true if the specfied `info` on the
* WriteReq, `write`, should be passed down into the derived
* TransportStream's I/O via `.log(info, callback)`.
* @param {WriteReq} write - winston@3 Node.js WriteReq for the `info` object
* representing the log message.
* @returns {Boolean} - Value indicating if the `write` should be accepted &
* logged.
*/
TransportStream.prototype._accept = function _accept(write) {
var info = write.chunk;
if (this.silent) {
return false;
}
// We always prefer any explicit level set on the Transport itself
// falling back to any level set on the parent.
var level = this.level || this.parent && this.parent.level;
// Immediately check the average case: log level filtering.
if (info.exception === true || !level || this.levels[level] >= this.levels[info[LEVEL]]) {
// Ensure the info object is valid based on `{ exception }`:
// 1. { handleExceptions: true }: all `info` objects are valid
// 2. { exception: false }: accepted by all transports.
if (this.handleExceptions || info.exception !== true) {
return true;
}
}
return false;
};
/**
* _nop is short for "No operation"
* @returns {Boolean} Intentionally false.
*/
TransportStream.prototype._nop = function _nop() {
// eslint-disable-next-line no-undefined
return void undefined;
};

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'use strict';
var util = require('util');
var _require = require('triple-beam'),
LEVEL = _require.LEVEL;
var TransportStream = require('./');
/**
* Constructor function for the LegacyTransportStream. This is an internal
* wrapper `winston >= 3` uses to wrap older transports implementing
* log(level, message, meta).
* @param {Object} options - Options for this TransportStream instance.
* @param {Transpot} options.transport - winston@2 or older Transport to wrap.
*/
var LegacyTransportStream = module.exports = function LegacyTransportStream() {
var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
TransportStream.call(this, options);
if (!options.transport || typeof options.transport.log !== 'function') {
throw new Error('Invalid transport, must be an object with a log method.');
}
this.transport = options.transport;
this.level = this.level || options.transport.level;
this.handleExceptions = this.handleExceptions || options.transport.handleExceptions;
// Display our deprecation notice.
this._deprecated();
// Properly bubble up errors from the transport to the
// LegacyTransportStream instance, but only once no matter how many times
// this transport is shared.
function transportError(err) {
this.emit('error', err, this.transport);
}
if (!this.transport.__winstonError) {
this.transport.__winstonError = transportError.bind(this);
this.transport.on('error', this.transport.__winstonError);
}
};
/*
* Inherit from TransportStream using Node.js built-ins
*/
util.inherits(LegacyTransportStream, TransportStream);
/**
* Writes the info object to our transport instance.
* @param {mixed} info - TODO: add param description.
* @param {mixed} enc - TODO: add param description.
* @param {function} callback - TODO: add param description.
* @returns {undefined}
* @private
*/
LegacyTransportStream.prototype._write = function _write(info, enc, callback) {
if (this.silent || info.exception === true && !this.handleExceptions) {
return callback(null);
}
// Remark: This has to be handled in the base transport now because we
// cannot conditionally write to our pipe targets as stream.
if (!this.level || this.levels[this.level] >= this.levels[info[LEVEL]]) {
this.transport.log(info[LEVEL], info.message, info, this._nop);
}
callback(null);
};
/**
* Writes the batch of info objects (i.e. "object chunks") to our transport
* instance after performing any necessary filtering.
* @param {mixed} chunks - TODO: add params description.
* @param {function} callback - TODO: add params description.
* @returns {mixed} - TODO: add returns description.
* @private
*/
LegacyTransportStream.prototype._writev = function _writev(chunks, callback) {
for (var i = 0; i < chunks.length; i++) {
if (this._accept(chunks[i])) {
this.transport.log(chunks[i].chunk[LEVEL], chunks[i].chunk.message, chunks[i].chunk, this._nop);
chunks[i].callback();
}
}
return callback(null);
};
/**
* Displays a deprecation notice. Defined as a function so it can be
* overriden in tests.
* @returns {undefined}
*/
LegacyTransportStream.prototype._deprecated = function _deprecated() {
// eslint-disable-next-line no-console
console.error([this.transport.name + ' is a legacy winston transport. Consider upgrading: ', '- Upgrade docs: https://github.com/winstonjs/winston/blob/master/UPGRADE-3.0.md'].join('\n'));
};
/**
* Clean up error handling state on the legacy transport associated
* with this instance.
* @returns {undefined}
*/
LegacyTransportStream.prototype.close = function close() {
if (this.transport.close) {
this.transport.close();
}
if (this.transport.__winstonError) {
this.transport.removeListener('error', this.transport.__winstonError);
this.transport.__winstonError = null;
}
};

37
node_modules/winston-transport/index.d.ts generated vendored Normal file
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// Type definitions for winston-transport 3.0
// Project: https://github.com/winstonjs/winston-transport
// Definitions by: DABH <https://github.com/DABH>
// Definitions: https://github.com/winstonjs/winston-transport
/// <reference types="node" />
import * as stream from 'stream';
import * as logform from 'logform';
declare class TransportStream extends stream.Writable {
public format?: logform.Format;
public level?: string;
public silent?: boolean;
public handleExceptions?: boolean;
constructor(opts?: TransportStream.TransportStreamOptions);
public log?(info: any, next: () => void): any;
public logv?(info: any, next: () => void): any;
public close?(): void;
}
declare namespace TransportStream {
interface TransportStreamOptions {
format?: logform.Format;
level?: string;
silent?: boolean;
handleExceptions?: boolean;
log?(info: any, next: () => void): any;
logv?(info: any, next: () => void): any;
close?(): void;
}
}
export = TransportStream;

210
node_modules/winston-transport/index.js generated vendored Normal file
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'use strict';
const util = require('util');
const Writable = require('readable-stream/writable');
const { LEVEL } = require('triple-beam');
/**
* Constructor function for the TransportStream. This is the base prototype
* that all `winston >= 3` transports should inherit from.
* @param {Object} options - Options for this TransportStream instance
* @param {String} options.level - Highest level according to RFC5424.
* @param {Boolean} options.handleExceptions - If true, info with
* { exception: true } will be written.
* @param {Function} options.log - Custom log function for simple Transport
* creation
* @param {Function} options.close - Called on "unpipe" from parent.
*/
const TransportStream = module.exports = function TransportStream(options = {}) {
Writable.call(this, { objectMode: true, highWaterMark: options.highWaterMark });
this.format = options.format;
this.level = options.level;
this.handleExceptions = options.handleExceptions;
this.silent = options.silent;
if (options.log) this.log = options.log;
if (options.logv) this.logv = options.logv;
if (options.close) this.close = options.close;
// Get the levels from the source we are piped from.
this.once('pipe', logger => {
// Remark (indexzero): this bookkeeping can only support multiple
// Logger parents with the same `levels`. This comes into play in
// the `winston.Container` code in which `container.add` takes
// a fully realized set of options with pre-constructed TransportStreams.
this.levels = logger.levels;
this.parent = logger;
});
// If and/or when the transport is removed from this instance
this.once('unpipe', src => {
// Remark (indexzero): this bookkeeping can only support multiple
// Logger parents with the same `levels`. This comes into play in
// the `winston.Container` code in which `container.add` takes
// a fully realized set of options with pre-constructed TransportStreams.
if (src === this.parent) {
this.parent = null;
if (this.close) {
this.close();
}
}
});
};
/*
* Inherit from Writeable using Node.js built-ins
*/
util.inherits(TransportStream, Writable);
/**
* Writes the info object to our transport instance.
* @param {mixed} info - TODO: add param description.
* @param {mixed} enc - TODO: add param description.
* @param {function} callback - TODO: add param description.
* @returns {undefined}
* @private
*/
TransportStream.prototype._write = function _write(info, enc, callback) {
if (this.silent || (info.exception === true && !this.handleExceptions)) {
return callback(null);
}
// Remark: This has to be handled in the base transport now because we
// cannot conditionally write to our pipe targets as stream. We always
// prefer any explicit level set on the Transport itself falling back to
// any level set on the parent.
const level = this.level || (this.parent && this.parent.level);
if (!level || this.levels[level] >= this.levels[info[LEVEL]]) {
if (info && !this.format) {
return this.log(info, callback);
}
let errState;
let transformed;
// We trap(and re-throw) any errors generated by the user-provided format, but also
// guarantee that the streams callback is invoked so that we can continue flowing.
try {
transformed = this.format.transform(Object.assign({}, info), this.format.options);
} catch (err) {
errState = err;
}
if (errState || !transformed) {
// eslint-disable-next-line callback-return
callback();
if (errState) throw errState;
return;
}
return this.log(transformed, callback);
}
return callback(null);
};
/**
* Writes the batch of info objects (i.e. "object chunks") to our transport
* instance after performing any necessary filtering.
* @param {mixed} chunks - TODO: add params description.
* @param {function} callback - TODO: add params description.
* @returns {mixed} - TODO: add returns description.
* @private
*/
TransportStream.prototype._writev = function _writev(chunks, callback) {
if (this.logv) {
const infos = chunks.filter(this._accept, this);
if (!infos.length) {
return callback(null);
}
// Remark (indexzero): from a performance perspective if Transport
// implementers do choose to implement logv should we make it their
// responsibility to invoke their format?
return this.logv(infos, callback);
}
for (let i = 0; i < chunks.length; i++) {
if (!this._accept(chunks[i])) continue;
if (chunks[i].chunk && !this.format) {
this.log(chunks[i].chunk, chunks[i].callback);
continue;
}
let errState;
let transformed;
// We trap(and re-throw) any errors generated by the user-provided format, but also
// guarantee that the streams callback is invoked so that we can continue flowing.
try {
transformed = this.format.transform(
Object.assign({}, chunks[i].chunk),
this.format.options
);
} catch (err) {
errState = err;
}
if (errState || !transformed) {
// eslint-disable-next-line callback-return
chunks[i].callback();
if (errState) {
// eslint-disable-next-line callback-return
callback(null);
throw errState;
}
} else {
this.log(transformed, chunks[i].callback);
}
}
return callback(null);
};
/**
* Predicate function that returns true if the specfied `info` on the
* WriteReq, `write`, should be passed down into the derived
* TransportStream's I/O via `.log(info, callback)`.
* @param {WriteReq} write - winston@3 Node.js WriteReq for the `info` object
* representing the log message.
* @returns {Boolean} - Value indicating if the `write` should be accepted &
* logged.
*/
TransportStream.prototype._accept = function _accept(write) {
const info = write.chunk;
if (this.silent) {
return false;
}
// We always prefer any explicit level set on the Transport itself
// falling back to any level set on the parent.
const level = this.level || (this.parent && this.parent.level);
// Immediately check the average case: log level filtering.
if (
info.exception === true ||
!level ||
this.levels[level] >= this.levels[info[LEVEL]]
) {
// Ensure the info object is valid based on `{ exception }`:
// 1. { handleExceptions: true }: all `info` objects are valid
// 2. { exception: false }: accepted by all transports.
if (this.handleExceptions || info.exception !== true) {
return true;
}
}
return false;
};
/**
* _nop is short for "No operation"
* @returns {Boolean} Intentionally false.
*/
TransportStream.prototype._nop = function _nop() {
// eslint-disable-next-line no-undefined
return void undefined;
};

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'use strict';
const util = require('util');
const { LEVEL } = require('triple-beam');
const TransportStream = require('./');
/**
* Constructor function for the LegacyTransportStream. This is an internal
* wrapper `winston >= 3` uses to wrap older transports implementing
* log(level, message, meta).
* @param {Object} options - Options for this TransportStream instance.
* @param {Transpot} options.transport - winston@2 or older Transport to wrap.
*/
const LegacyTransportStream = module.exports = function LegacyTransportStream(options = {}) {
TransportStream.call(this, options);
if (!options.transport || typeof options.transport.log !== 'function') {
throw new Error('Invalid transport, must be an object with a log method.');
}
this.transport = options.transport;
this.level = this.level || options.transport.level;
this.handleExceptions = this.handleExceptions || options.transport.handleExceptions;
// Display our deprecation notice.
this._deprecated();
// Properly bubble up errors from the transport to the
// LegacyTransportStream instance, but only once no matter how many times
// this transport is shared.
function transportError(err) {
this.emit('error', err, this.transport);
}
if (!this.transport.__winstonError) {
this.transport.__winstonError = transportError.bind(this);
this.transport.on('error', this.transport.__winstonError);
}
};
/*
* Inherit from TransportStream using Node.js built-ins
*/
util.inherits(LegacyTransportStream, TransportStream);
/**
* Writes the info object to our transport instance.
* @param {mixed} info - TODO: add param description.
* @param {mixed} enc - TODO: add param description.
* @param {function} callback - TODO: add param description.
* @returns {undefined}
* @private
*/
LegacyTransportStream.prototype._write = function _write(info, enc, callback) {
if (this.silent || (info.exception === true && !this.handleExceptions)) {
return callback(null);
}
// Remark: This has to be handled in the base transport now because we
// cannot conditionally write to our pipe targets as stream.
if (!this.level || this.levels[this.level] >= this.levels[info[LEVEL]]) {
this.transport.log(info[LEVEL], info.message, info, this._nop);
}
callback(null);
};
/**
* Writes the batch of info objects (i.e. "object chunks") to our transport
* instance after performing any necessary filtering.
* @param {mixed} chunks - TODO: add params description.
* @param {function} callback - TODO: add params description.
* @returns {mixed} - TODO: add returns description.
* @private
*/
LegacyTransportStream.prototype._writev = function _writev(chunks, callback) {
for (let i = 0; i < chunks.length; i++) {
if (this._accept(chunks[i])) {
this.transport.log(
chunks[i].chunk[LEVEL],
chunks[i].chunk.message,
chunks[i].chunk,
this._nop
);
chunks[i].callback();
}
}
return callback(null);
};
/**
* Displays a deprecation notice. Defined as a function so it can be
* overriden in tests.
* @returns {undefined}
*/
LegacyTransportStream.prototype._deprecated = function _deprecated() {
// eslint-disable-next-line no-console
console.error([
`${this.transport.name} is a legacy winston transport. Consider upgrading: `,
'- Upgrade docs: https://github.com/winstonjs/winston/blob/master/UPGRADE-3.0.md'
].join('\n'));
};
/**
* Clean up error handling state on the legacy transport associated
* with this instance.
* @returns {undefined}
*/
LegacyTransportStream.prototype.close = function close() {
if (this.transport.close) {
this.transport.close();
}
if (this.transport.__winstonError) {
this.transport.removeListener('error', this.transport.__winstonError);
this.transport.__winstonError = null;
}
};

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sudo: false
language: node_js
before_install:
- npm install -g npm@2
- test $NPM_LEGACY && npm install -g npm@latest-3 || npm install npm -g
notifications:
email: false
matrix:
fast_finish: true
include:
- node_js: '0.8'
env:
- TASK=test
- NPM_LEGACY=true
- node_js: '0.10'
env:
- TASK=test
- NPM_LEGACY=true
- node_js: '0.11'
env:
- TASK=test
- NPM_LEGACY=true
- node_js: '0.12'
env:
- TASK=test
- NPM_LEGACY=true
- node_js: 1
env:
- TASK=test
- NPM_LEGACY=true
- node_js: 2
env:
- TASK=test
- NPM_LEGACY=true
- node_js: 3
env:
- TASK=test
- NPM_LEGACY=true
- node_js: 4
env: TASK=test
- node_js: 5
env: TASK=test
- node_js: 6
env: TASK=test
- node_js: 7
env: TASK=test
- node_js: 8
env: TASK=test
- node_js: 9
env: TASK=test
script: "npm run $TASK"
env:
global:
- secure: rE2Vvo7vnjabYNULNyLFxOyt98BoJexDqsiOnfiD6kLYYsiQGfr/sbZkPMOFm9qfQG7pjqx+zZWZjGSswhTt+626C0t/njXqug7Yps4c3dFblzGfreQHp7wNX5TFsvrxd6dAowVasMp61sJcRnB2w8cUzoe3RAYUDHyiHktwqMc=
- secure: g9YINaKAdMatsJ28G9jCGbSaguXCyxSTy+pBO6Ch0Cf57ZLOTka3HqDj8p3nV28LUIHZ3ut5WO43CeYKwt4AUtLpBS3a0dndHdY6D83uY6b2qh5hXlrcbeQTq2cvw2y95F7hm4D1kwrgZ7ViqaKggRcEupAL69YbJnxeUDKWEdI=

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# Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
* (a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
* (b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
* (c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
* (d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
## Moderation Policy
The [Node.js Moderation Policy] applies to this WG.
## Code of Conduct
The [Node.js Code of Conduct][] applies to this WG.
[Node.js Code of Conduct]:
https://github.com/nodejs/node/blob/master/CODE_OF_CONDUCT.md
[Node.js Moderation Policy]:
https://github.com/nodejs/TSC/blob/master/Moderation-Policy.md

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### Streams Working Group
The Node.js Streams is jointly governed by a Working Group
(WG)
that is responsible for high-level guidance of the project.
The WG has final authority over this project including:
* Technical direction
* Project governance and process (including this policy)
* Contribution policy
* GitHub repository hosting
* Conduct guidelines
* Maintaining the list of additional Collaborators
For the current list of WG members, see the project
[README.md](./README.md#current-project-team-members).
### Collaborators
The readable-stream GitHub repository is
maintained by the WG and additional Collaborators who are added by the
WG on an ongoing basis.
Individuals making significant and valuable contributions are made
Collaborators and given commit-access to the project. These
individuals are identified by the WG and their addition as
Collaborators is discussed during the WG meeting.
_Note:_ If you make a significant contribution and are not considered
for commit-access log an issue or contact a WG member directly and it
will be brought up in the next WG meeting.
Modifications of the contents of the readable-stream repository are
made on
a collaborative basis. Anybody with a GitHub account may propose a
modification via pull request and it will be considered by the project
Collaborators. All pull requests must be reviewed and accepted by a
Collaborator with sufficient expertise who is able to take full
responsibility for the change. In the case of pull requests proposed
by an existing Collaborator, an additional Collaborator is required
for sign-off. Consensus should be sought if additional Collaborators
participate and there is disagreement around a particular
modification. See _Consensus Seeking Process_ below for further detail
on the consensus model used for governance.
Collaborators may opt to elevate significant or controversial
modifications, or modifications that have not found consensus to the
WG for discussion by assigning the ***WG-agenda*** tag to a pull
request or issue. The WG should serve as the final arbiter where
required.
For the current list of Collaborators, see the project
[README.md](./README.md#members).
### WG Membership
WG seats are not time-limited. There is no fixed size of the WG.
However, the expected target is between 6 and 12, to ensure adequate
coverage of important areas of expertise, balanced with the ability to
make decisions efficiently.
There is no specific set of requirements or qualifications for WG
membership beyond these rules.
The WG may add additional members to the WG by unanimous consensus.
A WG member may be removed from the WG by voluntary resignation, or by
unanimous consensus of all other WG members.
Changes to WG membership should be posted in the agenda, and may be
suggested as any other agenda item (see "WG Meetings" below).
If an addition or removal is proposed during a meeting, and the full
WG is not in attendance to participate, then the addition or removal
is added to the agenda for the subsequent meeting. This is to ensure
that all members are given the opportunity to participate in all
membership decisions. If a WG member is unable to attend a meeting
where a planned membership decision is being made, then their consent
is assumed.
No more than 1/3 of the WG members may be affiliated with the same
employer. If removal or resignation of a WG member, or a change of
employment by a WG member, creates a situation where more than 1/3 of
the WG membership shares an employer, then the situation must be
immediately remedied by the resignation or removal of one or more WG
members affiliated with the over-represented employer(s).
### WG Meetings
The WG meets occasionally on a Google Hangout On Air. A designated moderator
approved by the WG runs the meeting. Each meeting should be
published to YouTube.
Items are added to the WG agenda that are considered contentious or
are modifications of governance, contribution policy, WG membership,
or release process.
The intention of the agenda is not to approve or review all patches;
that should happen continuously on GitHub and be handled by the larger
group of Collaborators.
Any community member or contributor can ask that something be added to
the next meeting's agenda by logging a GitHub Issue. Any Collaborator,
WG member or the moderator can add the item to the agenda by adding
the ***WG-agenda*** tag to the issue.
Prior to each WG meeting the moderator will share the Agenda with
members of the WG. WG members can add any items they like to the
agenda at the beginning of each meeting. The moderator and the WG
cannot veto or remove items.
The WG may invite persons or representatives from certain projects to
participate in a non-voting capacity.
The moderator is responsible for summarizing the discussion of each
agenda item and sends it as a pull request after the meeting.
### Consensus Seeking Process
The WG follows a
[Consensus
Seeking](http://en.wikipedia.org/wiki/Consensus-seeking_decision-making)
decision-making model.
When an agenda item has appeared to reach a consensus the moderator
will ask "Does anyone object?" as a final call for dissent from the
consensus.
If an agenda item cannot reach a consensus a WG member can call for
either a closing vote or a vote to table the issue to the next
meeting. The call for a vote must be seconded by a majority of the WG
or else the discussion will continue. Simple majority wins.
Note that changes to WG membership require a majority consensus. See
"WG Membership" above.

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Node.js is licensed for use as follows:
"""
Copyright Node.js contributors. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
deal in the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
IN THE SOFTWARE.
"""
This license applies to parts of Node.js originating from the
https://github.com/joyent/node repository:
"""
Copyright Joyent, Inc. and other Node contributors. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
deal in the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
IN THE SOFTWARE.
"""

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# readable-stream
***Node-core v8.11.1 streams for userland*** [![Build Status](https://travis-ci.org/nodejs/readable-stream.svg?branch=master)](https://travis-ci.org/nodejs/readable-stream)
[![NPM](https://nodei.co/npm/readable-stream.png?downloads=true&downloadRank=true)](https://nodei.co/npm/readable-stream/)
[![NPM](https://nodei.co/npm-dl/readable-stream.png?&months=6&height=3)](https://nodei.co/npm/readable-stream/)
[![Sauce Test Status](https://saucelabs.com/browser-matrix/readable-stream.svg)](https://saucelabs.com/u/readable-stream)
```bash
npm install --save readable-stream
```
***Node-core streams for userland***
This package is a mirror of the Streams2 and Streams3 implementations in
Node-core.
Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v8.11.1/docs/api/stream.html).
If you want to guarantee a stable streams base, regardless of what version of
Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html).
As of version 2.0.0 **readable-stream** uses semantic versioning.
# Streams Working Group
`readable-stream` is maintained by the Streams Working Group, which
oversees the development and maintenance of the Streams API within
Node.js. The responsibilities of the Streams Working Group include:
* Addressing stream issues on the Node.js issue tracker.
* Authoring and editing stream documentation within the Node.js project.
* Reviewing changes to stream subclasses within the Node.js project.
* Redirecting changes to streams from the Node.js project to this
project.
* Assisting in the implementation of stream providers within Node.js.
* Recommending versions of `readable-stream` to be included in Node.js.
* Messaging about the future of streams to give the community advance
notice of changes.
<a name="members"></a>
## Team Members
* **Chris Dickinson** ([@chrisdickinson](https://github.com/chrisdickinson)) &lt;christopher.s.dickinson@gmail.com&gt;
- Release GPG key: 9554F04D7259F04124DE6B476D5A82AC7E37093B
* **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt;
- Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242
* **Rod Vagg** ([@rvagg](https://github.com/rvagg)) &lt;rod@vagg.org&gt;
- Release GPG key: DD8F2338BAE7501E3DD5AC78C273792F7D83545D
* **Sam Newman** ([@sonewman](https://github.com/sonewman)) &lt;newmansam@outlook.com&gt;
* **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt;
* **Domenic Denicola** ([@domenic](https://github.com/domenic)) &lt;d@domenic.me&gt;
* **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt;
- Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E
* **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt;

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# streams WG Meeting 2015-01-30
## Links
* **Google Hangouts Video**: http://www.youtube.com/watch?v=I9nDOSGfwZg
* **GitHub Issue**: https://github.com/iojs/readable-stream/issues/106
* **Original Minutes Google Doc**: https://docs.google.com/document/d/17aTgLnjMXIrfjgNaTUnHQO7m3xgzHR2VXBTmi03Qii4/
## Agenda
Extracted from https://github.com/iojs/readable-stream/labels/wg-agenda prior to meeting.
* adopt a charter [#105](https://github.com/iojs/readable-stream/issues/105)
* release and versioning strategy [#101](https://github.com/iojs/readable-stream/issues/101)
* simpler stream creation [#102](https://github.com/iojs/readable-stream/issues/102)
* proposal: deprecate implicit flowing of streams [#99](https://github.com/iojs/readable-stream/issues/99)
## Minutes
### adopt a charter
* group: +1's all around
### What versioning scheme should be adopted?
* group: +1s 3.0.0
* domenic+group: pulling in patches from other sources where appropriate
* mikeal: version independently, suggesting versions for io.js
* mikeal+domenic: work with TC to notify in advance of changes
simpler stream creation
### streamline creation of streams
* sam: streamline creation of streams
* domenic: nice simple solution posted
but, we lose the opportunity to change the model
may not be backwards incompatible (double check keys)
**action item:** domenic will check
### remove implicit flowing of streams on(data)
* add isFlowing / isPaused
* mikeal: worrying that were documenting polyfill methods confuses users
* domenic: more reflective API is probably good, with warning labels for users
* new section for mad scientists (reflective stream access)
* calvin: name the “third state”
* mikeal: maybe borrow the name from whatwg?
* domenic: were missing the “third state”
* consensus: kind of difficult to name the third state
* mikeal: figure out differences in states / compat
* mathias: always flow on data eliminates third state
* explore what it breaks
**action items:**
* ask isaac for ability to list packages by what public io.js APIs they use (esp. Stream)
* ask rod/build for infrastructure
* **chris**: explore the “flow on data” approach
* add isPaused/isFlowing
* add new docs section
* move isPaused to that section

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module.exports = require('./lib/_stream_duplex.js');

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module.exports = require('./readable').Duplex

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
keys.push(key);
}return keys;
};
/*</replacement>*/
module.exports = Duplex;
/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/
var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');
util.inherits(Duplex, Readable);
{
// avoid scope creep, the keys array can then be collected
var keys = objectKeys(Writable.prototype);
for (var v = 0; v < keys.length; v++) {
var method = keys[v];
if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
}
}
function Duplex(options) {
if (!(this instanceof Duplex)) return new Duplex(options);
Readable.call(this, options);
Writable.call(this, options);
if (options && options.readable === false) this.readable = false;
if (options && options.writable === false) this.writable = false;
this.allowHalfOpen = true;
if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;
this.once('end', onend);
}
Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._writableState.highWaterMark;
}
});
// the no-half-open enforcer
function onend() {
// if we allow half-open state, or if the writable side ended,
// then we're ok.
if (this.allowHalfOpen || this._writableState.ended) return;
// no more data can be written.
// But allow more writes to happen in this tick.
pna.nextTick(onEndNT, this);
}
function onEndNT(self) {
self.end();
}
Object.defineProperty(Duplex.prototype, 'destroyed', {
get: function () {
if (this._readableState === undefined || this._writableState === undefined) {
return false;
}
return this._readableState.destroyed && this._writableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (this._readableState === undefined || this._writableState === undefined) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._readableState.destroyed = value;
this._writableState.destroyed = value;
}
});
Duplex.prototype._destroy = function (err, cb) {
this.push(null);
this.end();
pna.nextTick(cb, err);
};

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.
'use strict';
module.exports = PassThrough;
var Transform = require('./_stream_transform');
/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/
util.inherits(PassThrough, Transform);
function PassThrough(options) {
if (!(this instanceof PassThrough)) return new PassThrough(options);
Transform.call(this, options);
}
PassThrough.prototype._transform = function (chunk, encoding, cb) {
cb(null, chunk);
};

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a transform stream is a readable/writable stream where you do
// something with the data. Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored. (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation. For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes. When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up. When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer. When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks. If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk. However,
// a pathological inflate type of transform can cause excessive buffering
// here. For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output. In this case, you could write a very small
// amount of input, and end up with a very large amount of output. In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform. A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.
'use strict';
module.exports = Transform;
var Duplex = require('./_stream_duplex');
/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/
util.inherits(Transform, Duplex);
function afterTransform(er, data) {
var ts = this._transformState;
ts.transforming = false;
var cb = ts.writecb;
if (!cb) {
return this.emit('error', new Error('write callback called multiple times'));
}
ts.writechunk = null;
ts.writecb = null;
if (data != null) // single equals check for both `null` and `undefined`
this.push(data);
cb(er);
var rs = this._readableState;
rs.reading = false;
if (rs.needReadable || rs.length < rs.highWaterMark) {
this._read(rs.highWaterMark);
}
}
function Transform(options) {
if (!(this instanceof Transform)) return new Transform(options);
Duplex.call(this, options);
this._transformState = {
afterTransform: afterTransform.bind(this),
needTransform: false,
transforming: false,
writecb: null,
writechunk: null,
writeencoding: null
};
// start out asking for a readable event once data is transformed.
this._readableState.needReadable = true;
// we have implemented the _read method, and done the other things
// that Readable wants before the first _read call, so unset the
// sync guard flag.
this._readableState.sync = false;
if (options) {
if (typeof options.transform === 'function') this._transform = options.transform;
if (typeof options.flush === 'function') this._flush = options.flush;
}
// When the writable side finishes, then flush out anything remaining.
this.on('prefinish', prefinish);
}
function prefinish() {
var _this = this;
if (typeof this._flush === 'function') {
this._flush(function (er, data) {
done(_this, er, data);
});
} else {
done(this, null, null);
}
}
Transform.prototype.push = function (chunk, encoding) {
this._transformState.needTransform = false;
return Duplex.prototype.push.call(this, chunk, encoding);
};
// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side. You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk. If you pass
// an error, then that'll put the hurt on the whole operation. If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
throw new Error('_transform() is not implemented');
};
Transform.prototype._write = function (chunk, encoding, cb) {
var ts = this._transformState;
ts.writecb = cb;
ts.writechunk = chunk;
ts.writeencoding = encoding;
if (!ts.transforming) {
var rs = this._readableState;
if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
}
};
// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
var ts = this._transformState;
if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
ts.transforming = true;
this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
} else {
// mark that we need a transform, so that any data that comes in
// will get processed, now that we've asked for it.
ts.needTransform = true;
}
};
Transform.prototype._destroy = function (err, cb) {
var _this2 = this;
Duplex.prototype._destroy.call(this, err, function (err2) {
cb(err2);
_this2.emit('close');
});
};
function done(stream, er, data) {
if (er) return stream.emit('error', er);
if (data != null) // single equals check for both `null` and `undefined`
stream.push(data);
// if there's nothing in the write buffer, then that means
// that nothing more will ever be provided
if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');
if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');
return stream.push(null);
}

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// A bit simpler than readable streams.
// Implement an async ._write(chunk, encoding, cb), and it'll handle all
// the drain event emission and buffering.
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
module.exports = Writable;
/* <replacement> */
function WriteReq(chunk, encoding, cb) {
this.chunk = chunk;
this.encoding = encoding;
this.callback = cb;
this.next = null;
}
// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
var _this = this;
this.next = null;
this.entry = null;
this.finish = function () {
onCorkedFinish(_this, state);
};
}
/* </replacement> */
/*<replacement>*/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
/*</replacement>*/
/*<replacement>*/
var Duplex;
/*</replacement>*/
Writable.WritableState = WritableState;
/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/
/*<replacement>*/
var internalUtil = {
deprecate: require('util-deprecate')
};
/*</replacement>*/
/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/
/*<replacement>*/
var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}
/*</replacement>*/
var destroyImpl = require('./internal/streams/destroy');
util.inherits(Writable, Stream);
function nop() {}
function WritableState(options, stream) {
Duplex = Duplex || require('./_stream_duplex');
options = options || {};
// Duplex streams are both readable and writable, but share
// the same options object.
// However, some cases require setting options to different
// values for the readable and the writable sides of the duplex stream.
// These options can be provided separately as readableXXX and writableXXX.
var isDuplex = stream instanceof Duplex;
// object stream flag to indicate whether or not this stream
// contains buffers or objects.
this.objectMode = !!options.objectMode;
if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
// the point at which write() starts returning false
// Note: 0 is a valid value, means that we always return false if
// the entire buffer is not flushed immediately on write()
var hwm = options.highWaterMark;
var writableHwm = options.writableHighWaterMark;
var defaultHwm = this.objectMode ? 16 : 16 * 1024;
if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;
// cast to ints.
this.highWaterMark = Math.floor(this.highWaterMark);
// if _final has been called
this.finalCalled = false;
// drain event flag.
this.needDrain = false;
// at the start of calling end()
this.ending = false;
// when end() has been called, and returned
this.ended = false;
// when 'finish' is emitted
this.finished = false;
// has it been destroyed
this.destroyed = false;
// should we decode strings into buffers before passing to _write?
// this is here so that some node-core streams can optimize string
// handling at a lower level.
var noDecode = options.decodeStrings === false;
this.decodeStrings = !noDecode;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// not an actual buffer we keep track of, but a measurement
// of how much we're waiting to get pushed to some underlying
// socket or file.
this.length = 0;
// a flag to see when we're in the middle of a write.
this.writing = false;
// when true all writes will be buffered until .uncork() call
this.corked = 0;
// a flag to be able to tell if the onwrite cb is called immediately,
// or on a later tick. We set this to true at first, because any
// actions that shouldn't happen until "later" should generally also
// not happen before the first write call.
this.sync = true;
// a flag to know if we're processing previously buffered items, which
// may call the _write() callback in the same tick, so that we don't
// end up in an overlapped onwrite situation.
this.bufferProcessing = false;
// the callback that's passed to _write(chunk,cb)
this.onwrite = function (er) {
onwrite(stream, er);
};
// the callback that the user supplies to write(chunk,encoding,cb)
this.writecb = null;
// the amount that is being written when _write is called.
this.writelen = 0;
this.bufferedRequest = null;
this.lastBufferedRequest = null;
// number of pending user-supplied write callbacks
// this must be 0 before 'finish' can be emitted
this.pendingcb = 0;
// emit prefinish if the only thing we're waiting for is _write cbs
// This is relevant for synchronous Transform streams
this.prefinished = false;
// True if the error was already emitted and should not be thrown again
this.errorEmitted = false;
// count buffered requests
this.bufferedRequestCount = 0;
// allocate the first CorkedRequest, there is always
// one allocated and free to use, and we maintain at most two
this.corkedRequestsFree = new CorkedRequest(this);
}
WritableState.prototype.getBuffer = function getBuffer() {
var current = this.bufferedRequest;
var out = [];
while (current) {
out.push(current);
current = current.next;
}
return out;
};
(function () {
try {
Object.defineProperty(WritableState.prototype, 'buffer', {
get: internalUtil.deprecate(function () {
return this.getBuffer();
}, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
});
} catch (_) {}
})();
// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
realHasInstance = Function.prototype[Symbol.hasInstance];
Object.defineProperty(Writable, Symbol.hasInstance, {
value: function (object) {
if (realHasInstance.call(this, object)) return true;
if (this !== Writable) return false;
return object && object._writableState instanceof WritableState;
}
});
} else {
realHasInstance = function (object) {
return object instanceof this;
};
}
function Writable(options) {
Duplex = Duplex || require('./_stream_duplex');
// Writable ctor is applied to Duplexes, too.
// `realHasInstance` is necessary because using plain `instanceof`
// would return false, as no `_writableState` property is attached.
// Trying to use the custom `instanceof` for Writable here will also break the
// Node.js LazyTransform implementation, which has a non-trivial getter for
// `_writableState` that would lead to infinite recursion.
if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
return new Writable(options);
}
this._writableState = new WritableState(options, this);
// legacy.
this.writable = true;
if (options) {
if (typeof options.write === 'function') this._write = options.write;
if (typeof options.writev === 'function') this._writev = options.writev;
if (typeof options.destroy === 'function') this._destroy = options.destroy;
if (typeof options.final === 'function') this._final = options.final;
}
Stream.call(this);
}
// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function () {
this.emit('error', new Error('Cannot pipe, not readable'));
};
function writeAfterEnd(stream, cb) {
var er = new Error('write after end');
// TODO: defer error events consistently everywhere, not just the cb
stream.emit('error', er);
pna.nextTick(cb, er);
}
// Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.
function validChunk(stream, state, chunk, cb) {
var valid = true;
var er = false;
if (chunk === null) {
er = new TypeError('May not write null values to stream');
} else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
er = new TypeError('Invalid non-string/buffer chunk');
}
if (er) {
stream.emit('error', er);
pna.nextTick(cb, er);
valid = false;
}
return valid;
}
Writable.prototype.write = function (chunk, encoding, cb) {
var state = this._writableState;
var ret = false;
var isBuf = !state.objectMode && _isUint8Array(chunk);
if (isBuf && !Buffer.isBuffer(chunk)) {
chunk = _uint8ArrayToBuffer(chunk);
}
if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
if (typeof cb !== 'function') cb = nop;
if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
state.pendingcb++;
ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
}
return ret;
};
Writable.prototype.cork = function () {
var state = this._writableState;
state.corked++;
};
Writable.prototype.uncork = function () {
var state = this._writableState;
if (state.corked) {
state.corked--;
if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
}
};
Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
// node::ParseEncoding() requires lower case.
if (typeof encoding === 'string') encoding = encoding.toLowerCase();
if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
this._writableState.defaultEncoding = encoding;
return this;
};
function decodeChunk(state, chunk, encoding) {
if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
chunk = Buffer.from(chunk, encoding);
}
return chunk;
}
Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function () {
return this._writableState.highWaterMark;
}
});
// if we're already writing something, then just put this
// in the queue, and wait our turn. Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
if (!isBuf) {
var newChunk = decodeChunk(state, chunk, encoding);
if (chunk !== newChunk) {
isBuf = true;
encoding = 'buffer';
chunk = newChunk;
}
}
var len = state.objectMode ? 1 : chunk.length;
state.length += len;
var ret = state.length < state.highWaterMark;
// we must ensure that previous needDrain will not be reset to false.
if (!ret) state.needDrain = true;
if (state.writing || state.corked) {
var last = state.lastBufferedRequest;
state.lastBufferedRequest = {
chunk: chunk,
encoding: encoding,
isBuf: isBuf,
callback: cb,
next: null
};
if (last) {
last.next = state.lastBufferedRequest;
} else {
state.bufferedRequest = state.lastBufferedRequest;
}
state.bufferedRequestCount += 1;
} else {
doWrite(stream, state, false, len, chunk, encoding, cb);
}
return ret;
}
function doWrite(stream, state, writev, len, chunk, encoding, cb) {
state.writelen = len;
state.writecb = cb;
state.writing = true;
state.sync = true;
if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
state.sync = false;
}
function onwriteError(stream, state, sync, er, cb) {
--state.pendingcb;
if (sync) {
// defer the callback if we are being called synchronously
// to avoid piling up things on the stack
pna.nextTick(cb, er);
// this can emit finish, and it will always happen
// after error
pna.nextTick(finishMaybe, stream, state);
stream._writableState.errorEmitted = true;
stream.emit('error', er);
} else {
// the caller expect this to happen before if
// it is async
cb(er);
stream._writableState.errorEmitted = true;
stream.emit('error', er);
// this can emit finish, but finish must
// always follow error
finishMaybe(stream, state);
}
}
function onwriteStateUpdate(state) {
state.writing = false;
state.writecb = null;
state.length -= state.writelen;
state.writelen = 0;
}
function onwrite(stream, er) {
var state = stream._writableState;
var sync = state.sync;
var cb = state.writecb;
onwriteStateUpdate(state);
if (er) onwriteError(stream, state, sync, er, cb);else {
// Check if we're actually ready to finish, but don't emit yet
var finished = needFinish(state);
if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
clearBuffer(stream, state);
}
if (sync) {
/*<replacement>*/
asyncWrite(afterWrite, stream, state, finished, cb);
/*</replacement>*/
} else {
afterWrite(stream, state, finished, cb);
}
}
}
function afterWrite(stream, state, finished, cb) {
if (!finished) onwriteDrain(stream, state);
state.pendingcb--;
cb();
finishMaybe(stream, state);
}
// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
if (state.length === 0 && state.needDrain) {
state.needDrain = false;
stream.emit('drain');
}
}
// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
state.bufferProcessing = true;
var entry = state.bufferedRequest;
if (stream._writev && entry && entry.next) {
// Fast case, write everything using _writev()
var l = state.bufferedRequestCount;
var buffer = new Array(l);
var holder = state.corkedRequestsFree;
holder.entry = entry;
var count = 0;
var allBuffers = true;
while (entry) {
buffer[count] = entry;
if (!entry.isBuf) allBuffers = false;
entry = entry.next;
count += 1;
}
buffer.allBuffers = allBuffers;
doWrite(stream, state, true, state.length, buffer, '', holder.finish);
// doWrite is almost always async, defer these to save a bit of time
// as the hot path ends with doWrite
state.pendingcb++;
state.lastBufferedRequest = null;
if (holder.next) {
state.corkedRequestsFree = holder.next;
holder.next = null;
} else {
state.corkedRequestsFree = new CorkedRequest(state);
}
state.bufferedRequestCount = 0;
} else {
// Slow case, write chunks one-by-one
while (entry) {
var chunk = entry.chunk;
var encoding = entry.encoding;
var cb = entry.callback;
var len = state.objectMode ? 1 : chunk.length;
doWrite(stream, state, false, len, chunk, encoding, cb);
entry = entry.next;
state.bufferedRequestCount--;
// if we didn't call the onwrite immediately, then
// it means that we need to wait until it does.
// also, that means that the chunk and cb are currently
// being processed, so move the buffer counter past them.
if (state.writing) {
break;
}
}
if (entry === null) state.lastBufferedRequest = null;
}
state.bufferedRequest = entry;
state.bufferProcessing = false;
}
Writable.prototype._write = function (chunk, encoding, cb) {
cb(new Error('_write() is not implemented'));
};
Writable.prototype._writev = null;
Writable.prototype.end = function (chunk, encoding, cb) {
var state = this._writableState;
if (typeof chunk === 'function') {
cb = chunk;
chunk = null;
encoding = null;
} else if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
// .end() fully uncorks
if (state.corked) {
state.corked = 1;
this.uncork();
}
// ignore unnecessary end() calls.
if (!state.ending && !state.finished) endWritable(this, state, cb);
};
function needFinish(state) {
return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
}
function callFinal(stream, state) {
stream._final(function (err) {
state.pendingcb--;
if (err) {
stream.emit('error', err);
}
state.prefinished = true;
stream.emit('prefinish');
finishMaybe(stream, state);
});
}
function prefinish(stream, state) {
if (!state.prefinished && !state.finalCalled) {
if (typeof stream._final === 'function') {
state.pendingcb++;
state.finalCalled = true;
pna.nextTick(callFinal, stream, state);
} else {
state.prefinished = true;
stream.emit('prefinish');
}
}
}
function finishMaybe(stream, state) {
var need = needFinish(state);
if (need) {
prefinish(stream, state);
if (state.pendingcb === 0) {
state.finished = true;
stream.emit('finish');
}
}
return need;
}
function endWritable(stream, state, cb) {
state.ending = true;
finishMaybe(stream, state);
if (cb) {
if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);
}
state.ended = true;
stream.writable = false;
}
function onCorkedFinish(corkReq, state, err) {
var entry = corkReq.entry;
corkReq.entry = null;
while (entry) {
var cb = entry.callback;
state.pendingcb--;
cb(err);
entry = entry.next;
}
if (state.corkedRequestsFree) {
state.corkedRequestsFree.next = corkReq;
} else {
state.corkedRequestsFree = corkReq;
}
}
Object.defineProperty(Writable.prototype, 'destroyed', {
get: function () {
if (this._writableState === undefined) {
return false;
}
return this._writableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (!this._writableState) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._writableState.destroyed = value;
}
});
Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;
Writable.prototype._destroy = function (err, cb) {
this.end();
cb(err);
};

View File

@ -0,0 +1,79 @@
'use strict';
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Buffer = require('safe-buffer').Buffer;
var util = require('util');
function copyBuffer(src, target, offset) {
src.copy(target, offset);
}
module.exports = function () {
function BufferList() {
_classCallCheck(this, BufferList);
this.head = null;
this.tail = null;
this.length = 0;
}
BufferList.prototype.push = function push(v) {
var entry = { data: v, next: null };
if (this.length > 0) this.tail.next = entry;else this.head = entry;
this.tail = entry;
++this.length;
};
BufferList.prototype.unshift = function unshift(v) {
var entry = { data: v, next: this.head };
if (this.length === 0) this.tail = entry;
this.head = entry;
++this.length;
};
BufferList.prototype.shift = function shift() {
if (this.length === 0) return;
var ret = this.head.data;
if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
--this.length;
return ret;
};
BufferList.prototype.clear = function clear() {
this.head = this.tail = null;
this.length = 0;
};
BufferList.prototype.join = function join(s) {
if (this.length === 0) return '';
var p = this.head;
var ret = '' + p.data;
while (p = p.next) {
ret += s + p.data;
}return ret;
};
BufferList.prototype.concat = function concat(n) {
if (this.length === 0) return Buffer.alloc(0);
if (this.length === 1) return this.head.data;
var ret = Buffer.allocUnsafe(n >>> 0);
var p = this.head;
var i = 0;
while (p) {
copyBuffer(p.data, ret, i);
i += p.data.length;
p = p.next;
}
return ret;
};
return BufferList;
}();
if (util && util.inspect && util.inspect.custom) {
module.exports.prototype[util.inspect.custom] = function () {
var obj = util.inspect({ length: this.length });
return this.constructor.name + ' ' + obj;
};
}

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@ -0,0 +1,74 @@
'use strict';
/*<replacement>*/
var pna = require('process-nextick-args');
/*</replacement>*/
// undocumented cb() API, needed for core, not for public API
function destroy(err, cb) {
var _this = this;
var readableDestroyed = this._readableState && this._readableState.destroyed;
var writableDestroyed = this._writableState && this._writableState.destroyed;
if (readableDestroyed || writableDestroyed) {
if (cb) {
cb(err);
} else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
pna.nextTick(emitErrorNT, this, err);
}
return this;
}
// we set destroyed to true before firing error callbacks in order
// to make it re-entrance safe in case destroy() is called within callbacks
if (this._readableState) {
this._readableState.destroyed = true;
}
// if this is a duplex stream mark the writable part as destroyed as well
if (this._writableState) {
this._writableState.destroyed = true;
}
this._destroy(err || null, function (err) {
if (!cb && err) {
pna.nextTick(emitErrorNT, _this, err);
if (_this._writableState) {
_this._writableState.errorEmitted = true;
}
} else if (cb) {
cb(err);
}
});
return this;
}
function undestroy() {
if (this._readableState) {
this._readableState.destroyed = false;
this._readableState.reading = false;
this._readableState.ended = false;
this._readableState.endEmitted = false;
}
if (this._writableState) {
this._writableState.destroyed = false;
this._writableState.ended = false;
this._writableState.ending = false;
this._writableState.finished = false;
this._writableState.errorEmitted = false;
}
}
function emitErrorNT(self, err) {
self.emit('error', err);
}
module.exports = {
destroy: destroy,
undestroy: undestroy
};

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@ -0,0 +1 @@
module.exports = require('events').EventEmitter;

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@ -0,0 +1 @@
module.exports = require('stream');

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@ -0,0 +1,81 @@
{
"_from": "readable-stream@^2.3.6",
"_id": "readable-stream@2.3.6",
"_inBundle": false,
"_integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
"_location": "/winston-transport/readable-stream",
"_phantomChildren": {},
"_requested": {
"type": "range",
"registry": true,
"raw": "readable-stream@^2.3.6",
"name": "readable-stream",
"escapedName": "readable-stream",
"rawSpec": "^2.3.6",
"saveSpec": null,
"fetchSpec": "^2.3.6"
},
"_requiredBy": [
"/winston-transport"
],
"_resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
"_shasum": "b11c27d88b8ff1fbe070643cf94b0c79ae1b0aaf",
"_spec": "readable-stream@^2.3.6",
"_where": "/Users/josh.burman/Projects/braid/node_modules/winston-transport",
"browser": {
"util": false,
"./readable.js": "./readable-browser.js",
"./writable.js": "./writable-browser.js",
"./duplex.js": "./duplex-browser.js",
"./lib/internal/streams/stream.js": "./lib/internal/streams/stream-browser.js"
},
"bugs": {
"url": "https://github.com/nodejs/readable-stream/issues"
},
"bundleDependencies": false,
"dependencies": {
"core-util-is": "~1.0.0",
"inherits": "~2.0.3",
"isarray": "~1.0.0",
"process-nextick-args": "~2.0.0",
"safe-buffer": "~5.1.1",
"string_decoder": "~1.1.1",
"util-deprecate": "~1.0.1"
},
"deprecated": false,
"description": "Streams3, a user-land copy of the stream library from Node.js",
"devDependencies": {
"assert": "^1.4.0",
"babel-polyfill": "^6.9.1",
"buffer": "^4.9.0",
"lolex": "^2.3.2",
"nyc": "^6.4.0",
"tap": "^0.7.0",
"tape": "^4.8.0"
},
"homepage": "https://github.com/nodejs/readable-stream#readme",
"keywords": [
"readable",
"stream",
"pipe"
],
"license": "MIT",
"main": "readable.js",
"name": "readable-stream",
"nyc": {
"include": [
"lib/**.js"
]
},
"repository": {
"type": "git",
"url": "git://github.com/nodejs/readable-stream.git"
},
"scripts": {
"ci": "tap test/parallel/*.js test/ours/*.js --tap | tee test.tap && node test/verify-dependencies.js",
"cover": "nyc npm test",
"report": "nyc report --reporter=lcov",
"test": "tap test/parallel/*.js test/ours/*.js && node test/verify-dependencies.js"
},
"version": "2.3.6"
}

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module.exports = require('./readable').PassThrough

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@ -0,0 +1,7 @@
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');

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var Stream = require('stream');
if (process.env.READABLE_STREAM === 'disable' && Stream) {
module.exports = Stream;
exports = module.exports = Stream.Readable;
exports.Readable = Stream.Readable;
exports.Writable = Stream.Writable;
exports.Duplex = Stream.Duplex;
exports.Transform = Stream.Transform;
exports.PassThrough = Stream.PassThrough;
exports.Stream = Stream;
} else {
exports = module.exports = require('./lib/_stream_readable.js');
exports.Stream = Stream || exports;
exports.Readable = exports;
exports.Writable = require('./lib/_stream_writable.js');
exports.Duplex = require('./lib/_stream_duplex.js');
exports.Transform = require('./lib/_stream_transform.js');
exports.PassThrough = require('./lib/_stream_passthrough.js');
}

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module.exports = require('./readable').Transform

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@ -0,0 +1 @@
module.exports = require('./lib/_stream_writable.js');

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@ -0,0 +1,8 @@
var Stream = require("stream")
var Writable = require("./lib/_stream_writable.js")
if (process.env.READABLE_STREAM === 'disable') {
module.exports = Stream && Stream.Writable || Writable
} else {
module.exports = Writable
}

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sudo: false
language: node_js
before_install:
- npm install -g npm@2
- test $NPM_LEGACY && npm install -g npm@latest-3 || npm install npm -g
notifications:
email: false
matrix:
fast_finish: true
include:
- node_js: '0.8'
env:
- TASK=test
- NPM_LEGACY=true
- node_js: '0.10'
env:
- TASK=test
- NPM_LEGACY=true
- node_js: '0.11'
env:
- TASK=test
- NPM_LEGACY=true
- node_js: '0.12'
env:
- TASK=test
- NPM_LEGACY=true
- node_js: 1
env:
- TASK=test
- NPM_LEGACY=true
- node_js: 2
env:
- TASK=test
- NPM_LEGACY=true
- node_js: 3
env:
- TASK=test
- NPM_LEGACY=true
- node_js: 4
env: TASK=test
- node_js: 5
env: TASK=test
- node_js: 6
env: TASK=test
- node_js: 7
env: TASK=test
- node_js: 8
env: TASK=test
- node_js: 9
env: TASK=test

View File

@ -0,0 +1,48 @@
Node.js is licensed for use as follows:
"""
Copyright Node.js contributors. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
deal in the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
IN THE SOFTWARE.
"""
This license applies to parts of Node.js originating from the
https://github.com/joyent/node repository:
"""
Copyright Joyent, Inc. and other Node contributors. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
deal in the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
IN THE SOFTWARE.
"""

View File

@ -0,0 +1,47 @@
# string_decoder
***Node-core v8.9.4 string_decoder for userland***
[![NPM](https://nodei.co/npm/string_decoder.png?downloads=true&downloadRank=true)](https://nodei.co/npm/string_decoder/)
[![NPM](https://nodei.co/npm-dl/string_decoder.png?&months=6&height=3)](https://nodei.co/npm/string_decoder/)
```bash
npm install --save string_decoder
```
***Node-core string_decoder for userland***
This package is a mirror of the string_decoder implementation in Node-core.
Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v8.9.4/docs/api/).
As of version 1.0.0 **string_decoder** uses semantic versioning.
## Previous versions
Previous version numbers match the versions found in Node core, e.g. 0.10.24 matches Node 0.10.24, likewise 0.11.10 matches Node 0.11.10.
## Update
The *build/* directory contains a build script that will scrape the source from the [nodejs/node](https://github.com/nodejs/node) repo given a specific Node version.
## Streams Working Group
`string_decoder` is maintained by the Streams Working Group, which
oversees the development and maintenance of the Streams API within
Node.js. The responsibilities of the Streams Working Group include:
* Addressing stream issues on the Node.js issue tracker.
* Authoring and editing stream documentation within the Node.js project.
* Reviewing changes to stream subclasses within the Node.js project.
* Redirecting changes to streams from the Node.js project to this
project.
* Assisting in the implementation of stream providers within Node.js.
* Recommending versions of `readable-stream` to be included in Node.js.
* Messaging about the future of streams to give the community advance
notice of changes.
See [readable-stream](https://github.com/nodejs/readable-stream) for
more details.

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
/*<replacement>*/
var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/
var isEncoding = Buffer.isEncoding || function (encoding) {
encoding = '' + encoding;
switch (encoding && encoding.toLowerCase()) {
case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
return true;
default:
return false;
}
};
function _normalizeEncoding(enc) {
if (!enc) return 'utf8';
var retried;
while (true) {
switch (enc) {
case 'utf8':
case 'utf-8':
return 'utf8';
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return 'utf16le';
case 'latin1':
case 'binary':
return 'latin1';
case 'base64':
case 'ascii':
case 'hex':
return enc;
default:
if (retried) return; // undefined
enc = ('' + enc).toLowerCase();
retried = true;
}
}
};
// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
var nenc = _normalizeEncoding(enc);
if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
return nenc || enc;
}
// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
this.encoding = normalizeEncoding(encoding);
var nb;
switch (this.encoding) {
case 'utf16le':
this.text = utf16Text;
this.end = utf16End;
nb = 4;
break;
case 'utf8':
this.fillLast = utf8FillLast;
nb = 4;
break;
case 'base64':
this.text = base64Text;
this.end = base64End;
nb = 3;
break;
default:
this.write = simpleWrite;
this.end = simpleEnd;
return;
}
this.lastNeed = 0;
this.lastTotal = 0;
this.lastChar = Buffer.allocUnsafe(nb);
}
StringDecoder.prototype.write = function (buf) {
if (buf.length === 0) return '';
var r;
var i;
if (this.lastNeed) {
r = this.fillLast(buf);
if (r === undefined) return '';
i = this.lastNeed;
this.lastNeed = 0;
} else {
i = 0;
}
if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
return r || '';
};
StringDecoder.prototype.end = utf8End;
// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;
// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
if (this.lastNeed <= buf.length) {
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
return this.lastChar.toString(this.encoding, 0, this.lastTotal);
}
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
this.lastNeed -= buf.length;
};
// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte. If an invalid byte is detected, -2 is returned.
function utf8CheckByte(byte) {
if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
return byte >> 6 === 0x02 ? -1 : -2;
}
// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
var j = buf.length - 1;
if (j < i) return 0;
var nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) self.lastNeed = nb - 1;
return nb;
}
if (--j < i || nb === -2) return 0;
nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) self.lastNeed = nb - 2;
return nb;
}
if (--j < i || nb === -2) return 0;
nb = utf8CheckByte(buf[j]);
if (nb >= 0) {
if (nb > 0) {
if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
}
return nb;
}
return 0;
}
// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
if ((buf[0] & 0xC0) !== 0x80) {
self.lastNeed = 0;
return '\ufffd';
}
if (self.lastNeed > 1 && buf.length > 1) {
if ((buf[1] & 0xC0) !== 0x80) {
self.lastNeed = 1;
return '\ufffd';
}
if (self.lastNeed > 2 && buf.length > 2) {
if ((buf[2] & 0xC0) !== 0x80) {
self.lastNeed = 2;
return '\ufffd';
}
}
}
}
// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
var p = this.lastTotal - this.lastNeed;
var r = utf8CheckExtraBytes(this, buf, p);
if (r !== undefined) return r;
if (this.lastNeed <= buf.length) {
buf.copy(this.lastChar, p, 0, this.lastNeed);
return this.lastChar.toString(this.encoding, 0, this.lastTotal);
}
buf.copy(this.lastChar, p, 0, buf.length);
this.lastNeed -= buf.length;
}
// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
var total = utf8CheckIncomplete(this, buf, i);
if (!this.lastNeed) return buf.toString('utf8', i);
this.lastTotal = total;
var end = buf.length - (total - this.lastNeed);
buf.copy(this.lastChar, 0, end);
return buf.toString('utf8', i, end);
}
// For UTF-8, a replacement character is added when ending on a partial
// character.
function utf8End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) return r + '\ufffd';
return r;
}
// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
if ((buf.length - i) % 2 === 0) {
var r = buf.toString('utf16le', i);
if (r) {
var c = r.charCodeAt(r.length - 1);
if (c >= 0xD800 && c <= 0xDBFF) {
this.lastNeed = 2;
this.lastTotal = 4;
this.lastChar[0] = buf[buf.length - 2];
this.lastChar[1] = buf[buf.length - 1];
return r.slice(0, -1);
}
}
return r;
}
this.lastNeed = 1;
this.lastTotal = 2;
this.lastChar[0] = buf[buf.length - 1];
return buf.toString('utf16le', i, buf.length - 1);
}
// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) {
var end = this.lastTotal - this.lastNeed;
return r + this.lastChar.toString('utf16le', 0, end);
}
return r;
}
function base64Text(buf, i) {
var n = (buf.length - i) % 3;
if (n === 0) return buf.toString('base64', i);
this.lastNeed = 3 - n;
this.lastTotal = 3;
if (n === 1) {
this.lastChar[0] = buf[buf.length - 1];
} else {
this.lastChar[0] = buf[buf.length - 2];
this.lastChar[1] = buf[buf.length - 1];
}
return buf.toString('base64', i, buf.length - n);
}
function base64End(buf) {
var r = buf && buf.length ? this.write(buf) : '';
if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
return r;
}
// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
return buf.toString(this.encoding);
}
function simpleEnd(buf) {
return buf && buf.length ? this.write(buf) : '';
}

View File

@ -0,0 +1,59 @@
{
"_from": "string_decoder@~1.1.1",
"_id": "string_decoder@1.1.1",
"_inBundle": false,
"_integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
"_location": "/winston-transport/string_decoder",
"_phantomChildren": {},
"_requested": {
"type": "range",
"registry": true,
"raw": "string_decoder@~1.1.1",
"name": "string_decoder",
"escapedName": "string_decoder",
"rawSpec": "~1.1.1",
"saveSpec": null,
"fetchSpec": "~1.1.1"
},
"_requiredBy": [
"/winston-transport/readable-stream"
],
"_resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
"_shasum": "9cf1611ba62685d7030ae9e4ba34149c3af03fc8",
"_spec": "string_decoder@~1.1.1",
"_where": "/Users/josh.burman/Projects/braid/node_modules/winston-transport/node_modules/readable-stream",
"bugs": {
"url": "https://github.com/nodejs/string_decoder/issues"
},
"bundleDependencies": false,
"dependencies": {
"safe-buffer": "~5.1.0"
},
"deprecated": false,
"description": "The string_decoder module from Node core",
"devDependencies": {
"babel-polyfill": "^6.23.0",
"core-util-is": "^1.0.2",
"inherits": "^2.0.3",
"tap": "~0.4.8"
},
"homepage": "https://github.com/nodejs/string_decoder",
"keywords": [
"string",
"decoder",
"browser",
"browserify"
],
"license": "MIT",
"main": "lib/string_decoder.js",
"name": "string_decoder",
"repository": {
"type": "git",
"url": "git://github.com/nodejs/string_decoder.git"
},
"scripts": {
"ci": "tap test/parallel/*.js test/ours/*.js --tap | tee test.tap && node test/verify-dependencies.js",
"test": "tap test/parallel/*.js && node test/verify-dependencies"
},
"version": "1.1.1"
}

85
node_modules/winston-transport/package.json generated vendored Normal file
View File

@ -0,0 +1,85 @@
{
"_from": "winston-transport@^4.3.0",
"_id": "winston-transport@4.3.0",
"_inBundle": false,
"_integrity": "sha512-B2wPuwUi3vhzn/51Uukcao4dIduEiPOcOt9HJ3QeaXgkJ5Z7UwpBzxS4ZGNHtrxrUvTwemsQiSys0ihOf8Mp1A==",
"_location": "/winston-transport",
"_phantomChildren": {
"core-util-is": "1.0.2",
"inherits": "2.0.3",
"isarray": "1.0.0",
"process-nextick-args": "2.0.0",
"safe-buffer": "5.1.2",
"util-deprecate": "1.0.2"
},
"_requested": {
"type": "range",
"registry": true,
"raw": "winston-transport@^4.3.0",
"name": "winston-transport",
"escapedName": "winston-transport",
"rawSpec": "^4.3.0",
"saveSpec": null,
"fetchSpec": "^4.3.0"
},
"_requiredBy": [
"/winston"
],
"_resolved": "https://registry.npmjs.org/winston-transport/-/winston-transport-4.3.0.tgz",
"_shasum": "df68c0c202482c448d9b47313c07304c2d7c2c66",
"_spec": "winston-transport@^4.3.0",
"_where": "/Users/josh.burman/Projects/braid/node_modules/winston",
"author": {
"name": "Charlie Robbins",
"email": "charlie.robbins@gmail.com"
},
"browser": "dist/index.js",
"bugs": {
"url": "https://github.com/winstonjs/winston-transport/issues"
},
"bundleDependencies": false,
"dependencies": {
"readable-stream": "^2.3.6",
"triple-beam": "^1.2.0"
},
"deprecated": false,
"description": "Base stream implementations for winston@3 and up.",
"devDependencies": {
"@types/node": "^10.1.4",
"abstract-winston-transport": ">= 0.3.0",
"assume": "^2.0.1",
"babel-cli": "^6.26.0",
"babel-preset-env": "^1.7.0",
"eslint-config-populist": "^4.1.0",
"logform": "^1.4.0",
"mocha": "^5.0.5",
"nyc": "^11.6.0",
"rimraf": "^2.6.2",
"winston-compat": "~0.1.0"
},
"engines": {
"node": ">= 6.4.0"
},
"homepage": "https://github.com/winstonjs/winston-transport#readme",
"keywords": [
"winston",
"transport",
"winston3"
],
"license": "MIT",
"main": "index.js",
"name": "winston-transport",
"repository": {
"type": "git",
"url": "git+ssh://git@github.com/winstonjs/winston-transport.git"
},
"scripts": {
"build": "rimraf dist && babel *.js -d ./dist",
"lint": "populist config/*.js index.js",
"prepublishOnly": "npm run build",
"pretest": "npm run lint && npm run build",
"report": "nyc report --reporter=lcov",
"test": "nyc mocha test/*.test.js"
},
"version": "4.3.0"
}

22
node_modules/winston-transport/tsconfig.json generated vendored Normal file
View File

@ -0,0 +1,22 @@
{
"compilerOptions": {
"module": "commonjs",
"lib": [
"es6"
],
"noImplicitAny": true,
"noImplicitThis": true,
"strictNullChecks": true,
"baseUrl": "./",
"typeRoots": [
"./node_modules/@types",
"./node_modules"
],
"types": ["node", "logform"],
"noEmit": true,
"forceConsistentCasingInFileNames": true
},
"files": [
"index.d.ts"
]
}