'use strict';
|
|
var IsCallable = require('es-abstract/2021/IsCallable');
|
var functionsHaveNames = require('functions-have-names')();
|
var callBound = require('call-bind/callBound');
|
var $functionToString = callBound('Function.prototype.toString');
|
var $stringMatch = callBound('String.prototype.match');
|
|
var classRegex = /^class /;
|
|
var isClass = function isClassConstructor(fn) {
|
if (IsCallable(fn)) {
|
return false;
|
}
|
if (typeof fn !== 'function') {
|
return false;
|
}
|
try {
|
var match = $stringMatch($functionToString(fn), classRegex);
|
return !!match;
|
} catch (e) {}
|
return false;
|
};
|
|
var regex = /\s*function\s+([^(\s]*)\s*/;
|
|
var functionProto = Function.prototype;
|
|
module.exports = function getName() {
|
if (!isClass(this) && !IsCallable(this)) {
|
throw new TypeError('Function.prototype.name sham getter called on non-function');
|
}
|
if (functionsHaveNames) {
|
return this.name;
|
}
|
if (this === functionProto) {
|
return '';
|
}
|
var str = $functionToString(this);
|
var match = $stringMatch(str, regex);
|
var name = match && match[1];
|
return name;
|
};
|
