blob: c1990622ec9dd1d293add020f6957e5ead955170 (
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// Works with __proto__ only. Old v8 can't work with null proto objects.
/* eslint-disable no-proto */
var isObject = require('./_is-object');
var anObject = require('./_an-object');
var check = function (O, proto) {
anObject(O);
if (!isObject(proto) && proto !== null) throw TypeError(proto + ": can't set as prototype!");
};
module.exports = {
set: Object.setPrototypeOf || ('__proto__' in {} ? // eslint-disable-line
function (test, buggy, set) {
try {
set = require('./_ctx')(Function.call, require('./_object-gopd').f(Object.prototype, '__proto__').set, 2);
set(test, []);
buggy = !(test instanceof Array);
} catch (e) { buggy = true; }
return function setPrototypeOf(O, proto) {
check(O, proto);
if (buggy) O.__proto__ = proto;
else set(O, proto);
return O;
};
}({}, false) : undefined),
check: check
};
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