1
|
'use strict';
|
2
|
|
3
|
var GetIntrinsic = require('../GetIntrinsic');
|
4
|
|
5
|
var has = require('has');
|
6
|
|
7
|
var $TypeError = GetIntrinsic('%TypeError%');
|
8
|
|
9
|
var getSymbolDescription = require('../helpers/getSymbolDescription');
|
10
|
|
11
|
var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
|
12
|
var IsExtensible = require('./IsExtensible');
|
13
|
var Type = require('./Type');
|
14
|
|
15
|
// https://ecma-international.org/ecma-262/6.0/#sec-setfunctionname
|
16
|
|
17
|
module.exports = function SetFunctionName(F, name) {
|
18
|
if (typeof F !== 'function') {
|
19
|
throw new $TypeError('Assertion failed: `F` must be a function');
|
20
|
}
|
21
|
if (!IsExtensible(F) || has(F, 'name')) {
|
22
|
throw new $TypeError('Assertion failed: `F` must be extensible, and must not have a `name` own property');
|
23
|
}
|
24
|
var nameType = Type(name);
|
25
|
if (nameType !== 'Symbol' && nameType !== 'String') {
|
26
|
throw new $TypeError('Assertion failed: `name` must be a Symbol or a String');
|
27
|
}
|
28
|
if (nameType === 'Symbol') {
|
29
|
var description = getSymbolDescription(name);
|
30
|
// eslint-disable-next-line no-param-reassign
|
31
|
name = typeof description === 'undefined' ? '' : '[' + description + ']';
|
32
|
}
|
33
|
if (arguments.length > 2) {
|
34
|
var prefix = arguments[2];
|
35
|
// eslint-disable-next-line no-param-reassign
|
36
|
name = prefix + ' ' + name;
|
37
|
}
|
38
|
return DefinePropertyOrThrow(F, 'name', {
|
39
|
'[[Value]]': name,
|
40
|
'[[Writable]]': false,
|
41
|
'[[Enumerable]]': false,
|
42
|
'[[Configurable]]': true
|
43
|
});
|
44
|
};
|