'use strict'; var callBind = require('call-bind-apply-helpers'); var gOPD = require('gopd'); var $TypeError = require('es-errors/type'); /** @type {{ __proto__?: object | null }} */ var obj = {}; try { obj.__proto__ = null; // eslint-disable-line no-proto } catch (e) { if ( !e || typeof e !== 'object' || !('code' in e) || e.code !== 'ERR_PROTO_ACCESS' ) { throw e; } } var hasProtoMutator = !('toString' in obj); // eslint-disable-next-line no-extra-parens var desc = gOPD && gOPD( Object.prototype, /** @type {keyof typeof Object.prototype} */ ('__proto__') ); /** @type {import('./set')} */ module.exports = hasProtoMutator && // eslint-disable-next-line no-extra-parens ((!!desc && typeof desc.set === 'function' && /** @type {import('./set')} */ (callBind([desc.set]))) || /** @type {import('./set')} */ function setDunder(object, proto) { // this is node v0.10 or older, which doesn't have Object.setPrototypeOf and has undeniable __proto__ if (object == null) { // eslint-disable-line eqeqeq throw new $TypeError( 'set Object.prototype.__proto__ called on null or undefined' ); } // eslint-disable-next-line no-proto, no-param-reassign, no-extra-parens /** @type {{ __proto__?: object | null }} */ (object).__proto__ = proto; return proto; });