module.exports = function createCustomError(name, message) { // use Object.create(), because some VMs prevent setting line/column otherwise // (iOS Safari 10 even throws an exception) var error = Object.create(SyntaxError.prototype); var errorStack = new Error(); error.name = name; error.message = message; Object.defineProperty(error, 'stack', { get: function() { return (errorStack.stack || '').replace(/^(.+\n){1,3}/, name + ': ' + message + '\n'); } }); return error; };