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'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;
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