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/** @license MIT License (c) copyright 2010-2014 original author or authors */
/** @author Brian Cavalier */
/** @author John Hann */
(function(define) { 'use strict';
define(function() {
return {
formatError: formatError,
formatObject: formatObject,
tryStringify: tryStringify
};
/**
* Format an error into a string. If e is an Error and has a stack property,
* it's returned. Otherwise, e is formatted using formatObject, with a
* warning added about e not being a proper Error.
* @param {*} e
* @returns {String} formatted string, suitable for output to developers
*/
function formatError(e) {
var s = typeof e === 'object' && e !== null && e.stack ? e.stack : formatObject(e);
return e instanceof Error ? s : s + ' (WARNING: non-Error used)';
}
/**
* Format an object, detecting "plain" objects and running them through
* JSON.stringify if possible.
* @param {Object} o
* @returns {string}
*/
function formatObject(o) {
var s = String(o);
if(s === '[object Object]' && typeof JSON !== 'undefined') {
s = tryStringify(o, s);
}
return s;
}
/**
* Try to return the result of JSON.stringify(x). If that fails, return
* defaultValue
* @param {*} x
* @param {*} defaultValue
* @returns {String|*} JSON.stringify(x) or defaultValue
*/
function tryStringify(x, defaultValue) {
try {
return JSON.stringify(x);
} catch(e) {
return defaultValue;
}
}
});
}(typeof define === 'function' && define.amd ? define : function(factory) { module.exports = factory(); }));
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