90 lines
3.9 KiB
JavaScript
90 lines
3.9 KiB
JavaScript
/**
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* exception-stream.js: TODO: add file header handler.
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*
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* (C) 2010 Charlie Robbins
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* MIT LICENCE
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*/
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'use strict';
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function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
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function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
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function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
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function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
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function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
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function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
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function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
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var _require = require('readable-stream'),
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Writable = _require.Writable;
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/**
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* TODO: add class description.
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* @type {ExceptionStream}
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* @extends {Writable}
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*/
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module.exports =
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/*#__PURE__*/
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function (_Writable) {
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_inherits(ExceptionStream, _Writable);
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/**
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* Constructor function for the ExceptionStream responsible for wrapping a
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* TransportStream; only allowing writes of `info` objects with
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* `info.exception` set to true.
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* @param {!TransportStream} transport - Stream to filter to exceptions
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*/
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function ExceptionStream(transport) {
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var _this;
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_classCallCheck(this, ExceptionStream);
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_this = _possibleConstructorReturn(this, _getPrototypeOf(ExceptionStream).call(this, {
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objectMode: true
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}));
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if (!transport) {
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throw new Error('ExceptionStream requires a TransportStream instance.');
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} // Remark (indexzero): we set `handleExceptions` here because it's the
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// predicate checked in ExceptionHandler.prototype.__getExceptionHandlers
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_this.handleExceptions = true;
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_this.transport = transport;
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return _this;
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}
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/**
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* Writes the info object to our transport instance if (and only if) the
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* `exception` property is set on the info.
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* @param {mixed} info - TODO: add param description.
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* @param {mixed} enc - TODO: add param description.
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* @param {mixed} callback - TODO: add param description.
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* @returns {mixed} - TODO: add return description.
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* @private
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*/
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_createClass(ExceptionStream, [{
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key: "_write",
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value: function _write(info, enc, callback) {
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if (info.exception) {
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return this.transport.log(info, callback);
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}
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callback();
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return true;
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}
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}]);
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return ExceptionStream;
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}(Writable); |