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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-18 23:26:45 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-18 23:26:45 +0100
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parent1870f3fdf43707a15fda0f609a021f516f45eb63 (diff)
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-rw-r--r--node_modules/es-abstract/2017/SetIntegrityLevel.js57
1 files changed, 0 insertions, 57 deletions
diff --git a/node_modules/es-abstract/2017/SetIntegrityLevel.js b/node_modules/es-abstract/2017/SetIntegrityLevel.js
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-'use strict';
-
-var GetIntrinsic = require('../GetIntrinsic');
-
-var $SyntaxError = GetIntrinsic('%SyntaxError%');
-var $TypeError = GetIntrinsic('%TypeError%');
-var $preventExtensions = GetIntrinsic('%Object.preventExtensions%');
-var $gOPD = require('../helpers/getOwnPropertyDescriptor');
-var $gOPN = GetIntrinsic('%Object.getOwnPropertyNames%');
-
-var forEach = require('../helpers/forEach');
-
-var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
-var IsAccessorDescriptor = require('./IsAccessorDescriptor');
-var ToPropertyDescriptor = require('./ToPropertyDescriptor');
-var Type = require('./Type');
-
-// https://www.ecma-international.org/ecma-262/6.0/#sec-setintegritylevel
-
-module.exports = function SetIntegrityLevel(O, level) {
- if (Type(O) !== 'Object') {
- throw new $TypeError('Assertion failed: Type(O) is not Object');
- }
- if (level !== 'sealed' && level !== 'frozen') {
- throw new $TypeError('Assertion failed: `level` must be `"sealed"` or `"frozen"`');
- }
- if (!$preventExtensions) {
- throw new $SyntaxError('SetIntegrityLevel requires native `Object.preventExtensions` support');
- }
- var status = $preventExtensions(O);
- if (!status) {
- return false;
- }
- if (!$gOPN) {
- throw new $SyntaxError('SetIntegrityLevel requires native `Object.getOwnPropertyNames` support');
- }
- var theKeys = $gOPN(O);
- if (level === 'sealed') {
- forEach(theKeys, function (k) {
- DefinePropertyOrThrow(O, k, { configurable: false });
- });
- } else if (level === 'frozen') {
- forEach(theKeys, function (k) {
- var currentDesc = $gOPD(O, k);
- if (typeof currentDesc !== 'undefined') {
- var desc;
- if (IsAccessorDescriptor(ToPropertyDescriptor(currentDesc))) {
- desc = { configurable: false };
- } else {
- desc = { configurable: false, writable: false };
- }
- DefinePropertyOrThrow(O, k, desc);
- }
- });
- }
- return true;
-};