| 123456789101112131415161718192021222324252627282930313233343536373839404142434445 | 'use strict';var $TypeError = require('es-errors/type');var IsPropertyKey = require('./IsPropertyKey');var SameValue = require('./SameValue');var Type = require('./Type');// IE 9 does not throw in strict mode when writability/configurability/extensibility is violatedvar noThrowOnStrictViolation = (function () {	try {		delete [].length;		return true;	} catch (e) {		return false;	}}());// https://262.ecma-international.org/6.0/#sec-set-o-p-v-throwmodule.exports = function Set(O, P, V, Throw) {	if (Type(O) !== 'Object') {		throw new $TypeError('Assertion failed: `O` must be an Object');	}	if (!IsPropertyKey(P)) {		throw new $TypeError('Assertion failed: `P` must be a Property Key');	}	if (typeof Throw !== 'boolean') {		throw new $TypeError('Assertion failed: `Throw` must be a Boolean');	}	if (Throw) {		O[P] = V; // eslint-disable-line no-param-reassign		if (noThrowOnStrictViolation && !SameValue(O[P], V)) {			throw new $TypeError('Attempted to assign to readonly property.');		}		return true;	}	try {		O[P] = V; // eslint-disable-line no-param-reassign		return noThrowOnStrictViolation ? SameValue(O[P], V) : true;	} catch (e) {		return false;	}};
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