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- 'use strict';
- var GetIntrinsic = require('get-intrinsic');
- var $TypeError = GetIntrinsic('%TypeError%');
- 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 violated
- var noThrowOnStrictViolation = (function () {
- try {
- delete [].length;
- return true;
- } catch (e) {
- return false;
- }
- }());
- // https://ecma-international.org/ecma-262/6.0/#sec-set-o-p-v-throw
- module.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 (Type(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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