142 lines
2.8 KiB
JavaScript
142 lines
2.8 KiB
JavaScript
'use strict';
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var util = require('util');
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var isArrayish = require('is-arrayish');
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var errorEx = function errorEx(name, properties) {
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if (!name || name.constructor !== String) {
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properties = name || {};
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name = Error.name;
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}
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var errorExError = function ErrorEXError(message) {
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if (!this) {
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return new ErrorEXError(message);
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}
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message = message instanceof Error
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? message.message
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: (message || this.message);
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Error.call(this, message);
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Error.captureStackTrace(this, errorExError);
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this.name = name;
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Object.defineProperty(this, 'message', {
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configurable: true,
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enumerable: false,
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get: function () {
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var newMessage = message.split(/\r?\n/g);
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for (var key in properties) {
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if (!properties.hasOwnProperty(key)) {
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continue;
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}
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var modifier = properties[key];
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if ('message' in modifier) {
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newMessage = modifier.message(this[key], newMessage) || newMessage;
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if (!isArrayish(newMessage)) {
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newMessage = [newMessage];
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}
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}
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}
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return newMessage.join('\n');
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},
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set: function (v) {
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message = v;
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}
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});
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var overwrittenStack = null;
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var stackDescriptor = Object.getOwnPropertyDescriptor(this, 'stack');
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var stackGetter = stackDescriptor.get;
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var stackValue = stackDescriptor.value;
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delete stackDescriptor.value;
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delete stackDescriptor.writable;
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stackDescriptor.set = function (newstack) {
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overwrittenStack = newstack;
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};
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stackDescriptor.get = function () {
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var stack = (overwrittenStack || ((stackGetter)
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? stackGetter.call(this)
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: stackValue)).split(/\r?\n+/g);
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// starting in Node 7, the stack builder caches the message.
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// just replace it.
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if (!overwrittenStack) {
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stack[0] = this.name + ': ' + this.message;
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}
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var lineCount = 1;
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for (var key in properties) {
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if (!properties.hasOwnProperty(key)) {
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continue;
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}
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var modifier = properties[key];
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if ('line' in modifier) {
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var line = modifier.line(this[key]);
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if (line) {
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stack.splice(lineCount++, 0, ' ' + line);
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}
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}
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if ('stack' in modifier) {
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modifier.stack(this[key], stack);
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}
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}
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return stack.join('\n');
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};
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Object.defineProperty(this, 'stack', stackDescriptor);
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};
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if (Object.setPrototypeOf) {
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Object.setPrototypeOf(errorExError.prototype, Error.prototype);
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Object.setPrototypeOf(errorExError, Error);
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} else {
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util.inherits(errorExError, Error);
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}
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return errorExError;
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};
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errorEx.append = function (str, def) {
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return {
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message: function (v, message) {
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v = v || def;
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if (v) {
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message[0] += ' ' + str.replace('%s', v.toString());
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}
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return message;
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}
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};
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};
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errorEx.line = function (str, def) {
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return {
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line: function (v) {
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v = v || def;
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if (v) {
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return str.replace('%s', v.toString());
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}
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return null;
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}
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};
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};
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module.exports = errorEx;
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