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

node_modules/logform/dist/pad-levels.js

@@ -0,0 +1,125 @@
+/* eslint no-unused-vars: 0 */
+'use strict';
+
+function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }
+
+function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance"); }
+
+function _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === "[object Arguments]") return Array.from(iter); }
+
+function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+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); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+var _require = require('triple-beam'),
+    configs = _require.configs,
+    LEVEL = _require.LEVEL,
+    MESSAGE = _require.MESSAGE;
+
+var Padder =
+/*#__PURE__*/
+function () {
+  function Padder() {
+    var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {
+      levels: configs.npm.levels
+    };
+
+    _classCallCheck(this, Padder);
+
+    this.paddings = Padder.paddingForLevels(opts.levels, opts.filler);
+    this.options = opts;
+  }
+  /**
+   * Returns the maximum length of keys in the specified `levels` Object.
+   * @param  {Object} levels Set of all levels to calculate longest level against.
+   * @returns {Number} Maximum length of the longest level string.
+   */
+
+
+  _createClass(Padder, [{
+    key: "transform",
+
+    /**
+     * Prepends the padding onto the `message` based on the `LEVEL` of
+     * the `info`. This is based on the behavior of `winston@2` which also
+     * prepended the level onto the message.
+     *
+     * See: https://github.com/winstonjs/winston/blob/2.x/lib/winston/logger.js#L198-L201
+     *
+     * @param  {Info} info Logform info object
+     * @param  {Object} opts Options passed along to this instance.
+     * @returns {Info} Modified logform info object.
+     */
+    value: function transform(info, opts) {
+      info.message = "".concat(this.paddings[info[LEVEL]]).concat(info.message);
+
+      if (info[MESSAGE]) {
+        info[MESSAGE] = "".concat(this.paddings[info[LEVEL]]).concat(info[MESSAGE]);
+      }
+
+      return info;
+    }
+  }], [{
+    key: "getLongestLevel",
+    value: function getLongestLevel(levels) {
+      var lvls = Object.keys(levels).map(function (level) {
+        return level.length;
+      });
+      return Math.max.apply(Math, _toConsumableArray(lvls));
+    }
+    /**
+     * Returns the padding for the specified `level` assuming that the
+     * maximum length of all levels it's associated with is `maxLength`.
+     * @param  {String} level Level to calculate padding for.
+     * @param  {String} filler Repeatable text to use for padding.
+     * @param  {Number} maxLength Length of the longest level
+     * @returns {String} Padding string for the `level`
+     */
+
+  }, {
+    key: "paddingForLevel",
+    value: function paddingForLevel(level, filler, maxLength) {
+      var targetLen = maxLength + 1 - level.length;
+      var rep = Math.floor(targetLen / filler.length);
+      var padding = "".concat(filler).concat(filler.repeat(rep));
+      return padding.slice(0, targetLen);
+    }
+    /**
+     * Returns an object with the string paddings for the given `levels`
+     * using the specified `filler`.
+     * @param  {Object} levels Set of all levels to calculate padding for.
+     * @param  {String} filler Repeatable text to use for padding.
+     * @returns {Object} Mapping of level to desired padding.
+     */
+
+  }, {
+    key: "paddingForLevels",
+    value: function paddingForLevels(levels) {
+      var filler = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : ' ';
+      var maxLength = Padder.getLongestLevel(levels);
+      return Object.keys(levels).reduce(function (acc, level) {
+        acc[level] = Padder.paddingForLevel(level, filler, maxLength);
+        return acc;
+      }, {});
+    }
+  }]);
+
+  return Padder;
+}();
+/*
+ * function padLevels (info)
+ * Returns a new instance of the padLevels Format which pads
+ * levels to be the same length. This was previously exposed as
+ * { padLevels: true } to transports in `winston < 3.0.0`.
+ */
+
+
+module.exports = function (opts) {
+  return new Padder(opts);
+};
+
+module.exports.Padder = module.exports.Format = Padder;