Add production dependencies

node_modules/plugin-error/index.js

@@ -0,0 +1,190 @@
+var util = require('util');
+var colors = require('ansi-colors');
+var extend = require('extend-shallow');
+var differ = require('arr-diff');
+var union = require('arr-union');
+
+var nonEnum = ['message', 'name', 'stack'];
+var ignored = union(nonEnum, ['__safety', '_stack', 'plugin', 'showProperties', 'showStack']);
+var props = ['fileName', 'lineNumber', 'message', 'name', 'plugin', 'showProperties', 'showStack', 'stack'];
+
+function PluginError(plugin, message, options) {
+  if (!(this instanceof PluginError)) {
+    throw new Error('Call PluginError using new');
+  }
+
+  Error.call(this);
+  var opts = setDefaults(plugin, message, options);
+  var self = this;
+
+  // If opts has an error, get details from it
+  if (typeof opts.error === 'object') {
+    var keys = union(Object.keys(opts.error), nonEnum);
+
+    // These properties are not enumerable, so we have to add them explicitly.
+    keys.forEach(function(prop) {
+      self[prop] = opts.error[prop];
+    });
+  }
+
+  // Opts object can override
+  props.forEach(function(prop) {
+    if (prop in opts) {
+      this[prop] = opts[prop];
+    }
+  }, this);
+
+  // Defaults
+  if (!this.name) {
+    this.name = 'Error';
+  }
+  if (!this.stack) {
+
+    /**
+     * `Error.captureStackTrace` appends a stack property which
+     * relies on the toString method of the object it is applied to.
+     *
+     * Since we are using our own toString method which controls when
+     * to display the stack trace, if we don't go through this safety
+     * object we'll get stack overflow problems.
+     */
+
+    var safety = {};
+    safety.toString = function() {
+      return this._messageWithDetails() + '\nStack:';
+    }.bind(this);
+
+    Error.captureStackTrace(safety, arguments.callee || this.constructor);
+    this.__safety = safety;
+  }
+  if (!this.plugin) {
+    throw new Error('Missing plugin name');
+  }
+  if (!this.message) {
+    throw new Error('Missing error message');
+  }
+}
+
+util.inherits(PluginError, Error);
+
+/**
+ * Output a formatted message with details
+ */
+
+PluginError.prototype._messageWithDetails = function() {
+  var msg = 'Message:\n    ' + this.message;
+  var details = this._messageDetails();
+  if (details !== '') {
+    msg += '\n' + details;
+  }
+  return msg;
+};
+
+/**
+ * Output actual message details
+ */
+
+PluginError.prototype._messageDetails = function() {
+  if (!this.showProperties) {
+    return '';
+  }
+
+  var props = differ(Object.keys(this), ignored);
+  var len = props.length;
+
+  if (len === 0) {
+    return '';
+  }
+
+  var res = '';
+  var i = 0;
+  while (len--) {
+    var prop = props[i++];
+    res += '    ';
+    res += prop + ': ' + this[prop];
+    res += '\n';
+  }
+  return 'Details:\n' + res;
+};
+
+/**
+ * Override the `toString` method
+ */
+
+PluginError.prototype.toString = function() {
+  var detailsWithStack = function(stack) {
+    return this._messageWithDetails() + '\nStack:\n' + stack;
+  }.bind(this);
+
+  var msg = '';
+  if (this.showStack) {
+    // If there is no wrapped error, use the stack captured in the PluginError ctor
+    if (this.__safety) {
+      msg = this.__safety.stack;
+
+    } else if (this._stack) {
+      msg = detailsWithStack(this._stack);
+
+    } else {
+      // Stack from wrapped error
+      msg = detailsWithStack(this.stack);
+    }
+    return message(msg, this);
+  }
+
+  msg = this._messageWithDetails();
+  return message(msg, this);
+};
+
+// Format the output message
+function message(msg, thisArg) {
+  var sig = colors.red(thisArg.name);
+  sig += ' in plugin ';
+  sig += '"' + colors.cyan(thisArg.plugin) + '"';
+  sig += '\n';
+  sig += msg;
+  return sig;
+}
+
+/**
+ * Set default options based on arguments.
+ */
+
+function setDefaults(plugin, message, opts) {
+  if (typeof plugin === 'object') {
+    return defaults(plugin);
+  }
+  opts = opts || {};
+  if (message instanceof Error) {
+    opts.error = message;
+  } else if (typeof message === 'object') {
+    opts = message;
+  } else {
+    opts.message = message;
+  }
+  opts.plugin = plugin;
+  return defaults(opts);
+}
+
+/**
+ * Extend default options with:
+ *
+ *  - `showStack`: default=false
+ *  - `showProperties`: default=true
+ *
+ * @param  {Object} `opts` Options to extend
+ * @return {Object}
+ */
+
+function defaults(opts) {
+  return extend({
+    showStack: false,
+    showProperties: true,
+  }, opts);
+}
+
+/**
+ * Expose `PluginError`
+ */
+
+module.exports = PluginError;