Sha256: 98a47049303ee8a16f2a7d34bbddb7ee0da9fa1980e9b47ce17b42bbed66c579
Contents?: true
Size: 608 Bytes
Versions: 49
Compression:
Stored size: 608 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.displayName || fn.name || (/function ([^\(]+)/.exec(fn.toString()) || [])[1];
var onetime = 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;
};
onetime.displayName = fnName;
return onetime;
};
Version data entries
49 entries across 49 versions & 5 rubygems