1 files changed, 141 insertions, 0 deletions
diff --git a/node_modules/error-ex/index.js b/node_modules/error-ex/index.js
new file mode 100644
index 0000000..4fb20b4
--- /dev/null
+++ b/node_modules/error-ex/index.js
@@ -0,0 +1,141 @@
+'use strict';
+
+var util = require('util');
+var isArrayish = require('is-arrayish');
+
+var errorEx = function errorEx(name, properties) {
+	if (!name || name.constructor !== String) {
+		properties = name || {};
+		name = Error.name;
+	}
+
+	var errorExError = function ErrorEXError(message) {
+		if (!this) {
+			return new ErrorEXError(message);
+		}
+
+		message = message instanceof Error
+			? message.message
+			: (message || this.message);
+
+		Error.call(this, message);
+		Error.captureStackTrace(this, errorExError);
+
+		this.name = name;
+
+		Object.defineProperty(this, 'message', {
+			configurable: true,
+			enumerable: false,
+			get: function () {
+				var newMessage = message.split(/\r?\n/g);
+
+				for (var key in properties) {
+					if (!properties.hasOwnProperty(key)) {
+						continue;
+					}
+
+					var modifier = properties[key];
+
+					if ('message' in modifier) {
+						newMessage = modifier.message(this[key], newMessage) || newMessage;
+						if (!isArrayish(newMessage)) {
+							newMessage = [newMessage];
+						}
+					}
+				}
+
+				return newMessage.join('\n');
+			},
+			set: function (v) {
+				message = v;
+			}
+		});
+
+		var overwrittenStack = null;
+
+		var stackDescriptor = Object.getOwnPropertyDescriptor(this, 'stack');
+		var stackGetter = stackDescriptor.get;
+		var stackValue = stackDescriptor.value;
+		delete stackDescriptor.value;
+		delete stackDescriptor.writable;
+
+		stackDescriptor.set = function (newstack) {
+			overwrittenStack = newstack;
+		};
+
+		stackDescriptor.get = function () {
+			var stack = (overwrittenStack || ((stackGetter)
+				? stackGetter.call(this)
+				: stackValue)).split(/\r?\n+/g);
+
+			// starting in Node 7, the stack builder caches the message.
+			// just replace it.
+			if (!overwrittenStack) {
+				stack[0] = this.name + ': ' + this.message;
+			}
+
+			var lineCount = 1;
+			for (var key in properties) {
+				if (!properties.hasOwnProperty(key)) {
+					continue;
+				}
+
+				var modifier = properties[key];
+
+				if ('line' in modifier) {
+					var line = modifier.line(this[key]);
+					if (line) {
+						stack.splice(lineCount++, 0, '    ' + line);
+					}
+				}
+
+				if ('stack' in modifier) {
+					modifier.stack(this[key], stack);
+				}
+			}
+
+			return stack.join('\n');
+		};
+
+		Object.defineProperty(this, 'stack', stackDescriptor);
+	};
+
+	if (Object.setPrototypeOf) {
+		Object.setPrototypeOf(errorExError.prototype, Error.prototype);
+		Object.setPrototypeOf(errorExError, Error);
+	} else {
+		util.inherits(errorExError, Error);
+	}
+
+	return errorExError;
+};
+
+errorEx.append = function (str, def) {
+	return {
+		message: function (v, message) {
+			v = v || def;
+
+			if (v) {
+				message[0] += ' ' + str.replace('%s', v.toString());
+			}
+
+			return message;
+		}
+	};
+};
+
+errorEx.line = function (str, def) {
+	return {
+		line: function (v) {
+			v = v || def;
+
+			if (v) {
+				return str.replace('%s', v.toString());
+			}
+
+			return null;
+		}
+	};
+};
+
+module.exports = errorEx;