17 lines
388 B
JavaScript
17 lines
388 B
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
var KeyForSymbol = require('./KeyForSymbol');
|
||
|
|
var Type = require('./Type');
|
||
|
|
|
||
|
|
// https://262.ecma-international.org/14.0/#sec-canbeheldweakly
|
||
|
|
|
||
|
|
module.exports = function CanBeHeldWeakly(v) {
|
||
|
|
if (Type(v) === 'Object') {
|
||
|
|
return true; // step 1
|
||
|
|
}
|
||
|
|
if (Type(v) === 'Symbol' && typeof KeyForSymbol(v) === 'undefined') {
|
||
|
|
return true; // step 2
|
||
|
|
}
|
||
|
|
return false; // step 3
|
||
|
|
};
|