Sha256: 7c7792b40e4fa9e46df13033b3e209a4c4bb2246d9178198a1091df028e54d7b
Contents?: true
Size: 531 Bytes
Versions: 62
Compression:
Stored size: 531 Bytes
Contents
'use strict';
module.exports = function (fn, errMsg) {
if (typeof fn !== 'function') {
throw new TypeError('Expected a function.');
}
var ret;
var called = false;
var fnName = fn.name || (/function ([^\(]+)/.exec(fn.toString()) || [])[1];
return function () {
if (called) {
if (errMsg === true) {
fnName = fnName ? fnName + '()' : 'Function';
throw new Error(fnName + ' can only be called once.');
}
return ret;
}
called = true;
ret = fn.apply(this, arguments);
fn = null;
return ret;
};
};
Version data entries
62 entries across 62 versions & 1 rubygems