package.helpers.isAbstractClosure.js Maven / Gradle / Ivy

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ECMAScript spec abstract operations.

There is a newer version: 1.22.3

'use strict';

var functionName = require('function.prototype.name');

var anon = functionName(function () {});

module.exports = function isAbstractClosure(x) {
	return typeof x === 'function' && (!x.prototype || functionName(x) === anon);
};