Get and robustly cache all JS language-level intrinsics at first require time. 

Get and robustly cache all JS language-level intrinsics at first require time

ljharb

get-intrinsic

All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)

and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [v1.1.3](https://github.com/ljharb/get-intrinsic/compare/v1.1.2...v1.1.3) - 2022-09-12

- [Dev Deps] update `es-abstract`, `es-value-fixtures`, `tape` [`07ff291`](https://github.com/ljharb/get-intrinsic/commit/07ff291816406ebe5a12d7f16965bde0942dd688)

- [Fix] properly check for % signs [`50ac176`](https://github.com/ljharb/get-intrinsic/commit/50ac1760fe99c227e64eabde76e9c0e44cd881b5)

## [v1.1.2](https://github.com/ljharb/get-intrinsic/compare/v1.1.1...v1.1.2) - 2022-06-08

- [Fix] properly validate against extra % signs [`#16`](https://github.com/ljharb/get-intrinsic/issues/16)

- [actions] reuse common workflows [`0972547`](https://github.com/ljharb/get-intrinsic/commit/0972547efd0abc863fe4c445a6ca7eb4f8c6901d)

- [meta] use `npmignore` to autogenerate an npmignore file [`5ba0b51`](https://github.com/ljharb/get-intrinsic/commit/5ba0b51d8d8d4f1c31d426d74abc0770fd106bad)

- [actions] use `node/install` instead of `node/run`; use `codecov` action [`c364492`](https://github.com/ljharb/get-intrinsic/commit/c364492af4af51333e6f81c0bf21fd3d602c3661)

- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `auto-changelog`, `es-abstract`, `object-inspect`, `tape` [`dc04dad`](https://github.com/ljharb/get-intrinsic/commit/dc04dad86f6e5608775a2640cb0db5927ae29ed9)

- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `es-abstract`, `object-inspect`, `safe-publish-latest`, `tape` [`1c14059`](https://github.com/ljharb/get-intrinsic/commit/1c1405984e86dd2dc9366c15d8a0294a96a146a5)

- [Tests] use `mock-property` [`b396ef0`](https://github.com/ljharb/get-intrinsic/commit/b396ef05bb73b1d699811abd64b0d9b97997fdda)

- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `auto-changelog`, `object-inspect`, `tape` [`c2c758d`](https://github.com/ljharb/get-intrinsic/commit/c2c758d3b90af4fef0a76910d8d3c292ec8d1d3e)

- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `es-abstract`, `es-value-fixtures`, `object-inspect`, `tape` [`29e3c09`](https://github.com/ljharb/get-intrinsic/commit/29e3c091c2bf3e17099969847e8729d0e46896de)

- [actions] update codecov uploader [`8cbc141`](https://github.com/ljharb/get-intrinsic/commit/8cbc1418940d7a8941f3a7985cbc4ac095c5e13d)

- [Dev Deps] update `@ljharb/eslint-config`, `es-abstract`, `es-value-fixtures`, `object-inspect`, `tape` [`10b6f5c`](https://github.com/ljharb/get-intrinsic/commit/10b6f5c02593fb3680c581d696ac124e30652932)

- [readme] add github actions/codecov badges [`4e25400`](https://github.com/ljharb/get-intrinsic/commit/4e25400d9f51ae9eb059cbe22d9144e70ea214e8)

- [Tests] use `for-each` instead of `foreach` [`c05b957`](https://github.com/ljharb/get-intrinsic/commit/c05b957ad9a7bc7721af7cc9e9be1edbfe057496)

- [Dev Deps] update `es-abstract` [`29b05ae`](https://github.com/ljharb/get-intrinsic/commit/29b05aec3e7330e9ad0b8e0f685a9112c20cdd97)

- [meta] use `prepublishOnly` script for npm 7+ [`95c285d`](https://github.com/ljharb/get-intrinsic/commit/95c285da810516057d3bbfa871176031af38f05d)

- [Deps] update `has-symbols` [`593cb4f`](https://github.com/ljharb/get-intrinsic/commit/593cb4fb38e7922e40e42c183f45274b636424cd)

- [readme] fix repo URLs [`1c8305b`](https://github.com/ljharb/get-intrinsic/commit/1c8305b5365827c9b6fc785434aac0e1328ff2f5)

- [Deps] update `has-symbols` [`c7138b6`](https://github.com/ljharb/get-intrinsic/commit/c7138b6c6d73132d859471fb8c13304e1e7c8b20)

- [Dev Deps] remove unused `has-bigints` [`bd63aff`](https://github.com/ljharb/get-intrinsic/commit/bd63aff6ad8f3a986c557fcda2914187bdaab359)

## [v1.1.1](https://github.com/ljharb/get-intrinsic/compare/v1.1.0...v1.1.1) - 2021-02-03

- [meta] export `./package.json` [`#9`](https://github.com/ljharb/get-intrinsic/issues/9)

- [readme] flesh out the readme; use `evalmd` [`d12f12c`](https://github.com/ljharb/get-intrinsic/commit/d12f12c15345a0a0772cc65a7c64369529abd614)

- [eslint] set up proper globals config [`5a8c098`](https://github.com/ljharb/get-intrinsic/commit/5a8c0984e3319d1ac0e64b102f8ec18b64e79f36)

- [Dev Deps] update `eslint` [`7b9a5c0`](https://github.com/ljharb/get-intrinsic/commit/7b9a5c0d31a90ca1a1234181c74988fb046701cd)

## [v1.1.0](https://github.com/ljharb/get-intrinsic/compare/v1.0.2...v1.1.0) - 2021-01-25

- [Refactor] delay `Function` eval until syntax-derived values are requested [`#3`](https://github.com/ljharb/get-intrinsic/issues/3)

- [Tests] migrate tests to Github Actions [`2ab762b`](https://github.com/ljharb/get-intrinsic/commit/2ab762b48164aea8af37a40ba105bbc8246ab8c4)

- [meta] do not publish github action workflow files [`5e7108e`](https://github.com/ljharb/get-intrinsic/commit/5e7108e4768b244d48d9567ba4f8a6cab9c65b8e)

- [Tests] add some coverage [`01ac7a8`](https://github.com/ljharb/get-intrinsic/commit/01ac7a87ac29738567e8524cd8c9e026b1fa8cb3)

- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `call-bind`, `es-abstract`, `tape`; add `call-bind` [`911b672`](https://github.com/ljharb/get-intrinsic/commit/911b672fbffae433a96924c6ce013585e425f4b7)

- [Refactor] rearrange evalled constructors a bit [`7e7e4bf`](https://github.com/ljharb/get-intrinsic/commit/7e7e4bf583f3799c8ac1c6c5e10d2cb553957347)

- [meta] add Automatic Rebase and Require Allow Edits workflows [`0199968`](https://github.com/ljharb/get-intrinsic/commit/01999687a263ffce0a3cb011dfbcb761754aedbc)

## [v1.0.2](https://github.com/ljharb/get-intrinsic/compare/v1.0.1...v1.0.2) - 2020-12-17

- [Fix] Throw for non‑existent intrinsics [`68f873b`](https://github.com/ljharb/get-intrinsic/commit/68f873b013c732a05ad6f5fc54f697e55515461b)

- [Fix] Throw for non‑existent segments in the intrinsic path [`8325dee`](https://github.com/ljharb/get-intrinsic/commit/8325deee43128f3654d3399aa9591741ebe17b21)

- [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `aud`, `has-bigints`, `object-inspect` [`0c227a7`](https://github.com/ljharb/get-intrinsic/commit/0c227a7d8b629166f25715fd242553892e458525)

- [meta] do not lint coverage output [`70d2419`](https://github.com/ljharb/get-intrinsic/commit/70d24199b620043cd9110fc5f426d214ebe21dc9)

## [v1.0.1](https://github.com/ljharb/get-intrinsic/compare/v1.0.0...v1.0.1) - 2020-10-30

- [Tests] gather coverage data on every job [`d1d280d`](https://github.com/ljharb/get-intrinsic/commit/d1d280dec714e3f0519cc877dbcb193057d9cac6)

- [Fix] add missing dependencies [`5031771`](https://github.com/ljharb/get-intrinsic/commit/5031771bb1095b38be88ce7c41d5de88718e432e)

- [Tests] use `es-value-fixtures` [`af48765`](https://github.com/ljharb/get-intrinsic/commit/af48765a23c5323fb0b6b38dbf00eb5099c7bebc)

- Implementation [`bbce57c`](https://github.com/ljharb/get-intrinsic/commit/bbce57c6f33d05b2d8d3efa273ceeb3ee01127bb)

- Tests [`17b4f0d`](https://github.com/ljharb/get-intrinsic/commit/17b4f0d56dea6b4059b56fc30ef3ee4d9500ebc2)

- Initial commit [`3153294`](https://github.com/ljharb/get-intrinsic/commit/31532948de363b0a27dd9fd4649e7b7028ec4b44)

- npm init [`fb326c4`](https://github.com/ljharb/get-intrinsic/commit/fb326c4d2817c8419ec31de1295f06bb268a7902)

- [meta] add Automatic Rebase and Require Allow Edits workflows [`48862fb`](https://github.com/ljharb/get-intrinsic/commit/48862fb2508c8f6a57968e6d08b7c883afc9d550)

- [meta] add `auto-changelog` [`5f28ad0`](https://github.com/ljharb/get-intrinsic/commit/5f28ad019e060a353d8028f9f2591a9cc93074a1)

- [meta] add "funding"; create `FUNDING.yml` [`c2bbdde`](https://github.com/ljharb/get-intrinsic/commit/c2bbddeba73a875be61484ee4680b129a6d4e0a1)

- [Tests] add `npm run lint` [`0a84b98`](https://github.com/ljharb/get-intrinsic/commit/0a84b98b22b7cf7a748666f705b0003a493c35fd)

- Only apps should have lockfiles [`9586c75`](https://github.com/ljharb/get-intrinsic/commit/9586c75866c1ee678e4d5d4dbbdef6997e511b05)

// eslint-disable-next-line consistent-return

var getEvalledConstructor = function (expressionSyntax) {

		return $Function('"use strict"; return (' + expressionSyntax + ').constructor;')();

var $gOPD = Object.getOwnPropertyDescriptor;

		$gOPD = null; // this is IE 8, which has a broken gOPD

			// eslint-disable-next-line no-unused-expressions, no-caller, no-restricted-properties

			arguments.callee; // IE 8 does not throw here

				// IE 8 throws on Object.getOwnPropertyDescriptor(arguments, '')

				return $gOPD(arguments, 'callee').get;

var hasSymbols = require('has-symbols')();

var getProto = Object.getPrototypeOf || function (x) { return x.__proto__; }; // eslint-disable-line no-proto

var TypedArray = typeof Uint8Array === 'undefined' ? undefined : getProto(Uint8Array);

	'%AggregateError%': typeof AggregateError === 'undefined' ? undefined : AggregateError,

	'%ArrayBuffer%': typeof ArrayBuffer === 'undefined' ? undefined : ArrayBuffer,

	'%ArrayIteratorPrototype%': hasSymbols ? getProto([][Symbol.iterator]()) : undefined,

	'%AsyncFromSyncIteratorPrototype%': undefined,

	'%Atomics%': typeof Atomics === 'undefined' ? undefined : Atomics,

	'%BigInt%': typeof BigInt === 'undefined' ? undefined : BigInt,

	'%DataView%': typeof DataView === 'undefined' ? undefined : DataView,

	'%decodeURIComponent%': decodeURIComponent,

	'%encodeURIComponent%': encodeURIComponent,

	'%eval%': eval, // eslint-disable-line no-eval

	'%Float32Array%': typeof Float32Array === 'undefined' ? undefined : Float32Array,

	'%Float64Array%': typeof Float64Array === 'undefined' ? undefined : Float64Array,

	'%FinalizationRegistry%': typeof FinalizationRegistry === 'undefined' ? undefined : FinalizationRegistry,

	'%Int8Array%': typeof Int8Array === 'undefined' ? undefined : Int8Array,

	'%Int16Array%': typeof Int16Array === 'undefined' ? undefined : Int16Array,

	'%Int32Array%': typeof Int32Array === 'undefined' ? undefined : Int32Array,

	'%IteratorPrototype%': hasSymbols ? getProto(getProto([][Symbol.iterator]())) : undefined,

	'%JSON%': typeof JSON === 'object' ? JSON : undefined,

	'%Map%': typeof Map === 'undefined' ? undefined : Map,

	'%MapIteratorPrototype%': typeof Map === 'undefined' || !hasSymbols ? undefined : getProto(new Map()[Symbol.iterator]()),

	'%Promise%': typeof Promise === 'undefined' ? undefined : Promise,

	'%Proxy%': typeof Proxy === 'undefined' ? undefined : Proxy,

	'%Reflect%': typeof Reflect === 'undefined' ? undefined : Reflect,

	'%Set%': typeof Set === 'undefined' ? undefined : Set,

	if ($exec(/^%?[^%]*%?$/g, name) === null) {

	if ($exec(/^%?[^%]*%?$/, name) === null) {

		throw new $SyntaxError('`%` may not be present anywhere but at the beginning and end of the intrinsic name');

	var intrinsicBaseName = parts.length > 0 ? parts[0] : '';

	var intrinsic = getBaseIntrinsic('%' + intrinsicBaseName + '%', allowMissing);

		$spliceApply(parts, $concat([0, 1], alias));

	for (var i = 1, isOwn = true; i < parts.length; i += 1) {

				(first === '"' || first === "'" || first === '`')

				|| (last === '"' || last === "'" || last === '`')

			throw new $SyntaxError('property names with quotes must have matching quotes');

		if (part === 'constructor' || !isOwn) {

		intrinsicRealName = '%' + intrinsicBaseName + '%';

		if (hasOwn(INTRINSICS, intrinsicRealName)) {

			value = INTRINSICS[intrinsicRealName];

					throw new $TypeError('base intrinsic for ' + name + ' exists, but the property is not available.');

			if ($gOPD && (i + 1) >= parts.length) {

				// By convention, when a data property is converted to an accessor

				// property to emulate a data property that does not suffer from

				// the override mistake, that accessor's getter is marked with

				// an `originalValue` property. Here, when we detect this, we

				// uphold the illusion by pretending to see that original data

				// property, i.e., returning the value rather than the getter

				if (isOwn && 'get' in desc && !('originalValue' in desc.get)) {

				INTRINSICS[intrinsicRealName] = value;

	"description": "Get and robustly cache all JS language-level intrinsics at first require time",

		"prepack": "npmignore --auto --commentLines=autogenerated",

		"prepublish": "not-in-publish || npm run prepublishOnly",

		"prepublishOnly": "safe-publish-latest",

		"tests-only": "nyc tape 'test/**/*.js'",

		"version": "auto-changelog && git add CHANGELOG.md",

		"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\""

		"url": "git+https://github.com/ljharb/get-intrinsic.git"

	"author": "Jordan Harband <ljharb@gmail.com>",

		"url": "https://github.com/sponsors/ljharb"

		"url": "https://github.com/ljharb/get-intrinsic/issues"

	"homepage": "https://github.com/ljharb/get-intrinsic#readme",

		"make-async-generator-function": "^1.0.0",

		{
		"name": "get-intrinsic",
		"version": "1.1.2",
		"version": "1.1.3",
		"description": "Get and robustly cache all JS language-level intrinsics at first require time",
		@@ -55,4 +55,4 @@ "main": "index.js",
		"call-bind": "^1.0.2",
		"es-abstract": "^1.20.1",
		"es-value-fixtures": "^1.4.1",
		"es-abstract": "^1.20.2",
		"es-value-fixtures": "^1.4.2",
		"eslint": "=8.8.0",
		@@ -69,3 +69,3 @@ "evalmd": "^0.0.19",
		"safe-publish-latest": "^2.0.0",
		"tape": "^5.5.3"
		"tape": "^5.6.0"
		},
		@@ -85,2 +85,5 @@ "auto-changelog": {
		},
		"testling": {
		"files": "test/GetIntrinsic.js"
		},
		"publishConfig": {
		@@ -87,0 +90,0 @@ "ignore": [

		@@ -8,2 +8,9 @@ # Changelog

		## [v1.1.3](https://github.com/ljharb/get-intrinsic/compare/v1.1.2...v1.1.3) - 2022-09-12

		### Commits

		- [Dev Deps] update `es-abstract`, `es-value-fixtures`, `tape` [`07ff291`](https://github.com/ljharb/get-intrinsic/commit/07ff291816406ebe5a12d7f16965bde0942dd688)
		- [Fix] properly check for % signs [`50ac176`](https://github.com/ljharb/get-intrinsic/commit/50ac1760fe99c227e64eabde76e9c0e44cd881b5)

		## [v1.1.2](https://github.com/ljharb/get-intrinsic/compare/v1.1.1...v1.1.2) - 2022-06-08
		@@ -10,0 +17,0 @@

		@@ -261,3 +261,3 @@ 'use strict';

		if ($exec(/^%?[^%]*%?$/g, name) === null) {
		if ($exec(/^%?[^%]*%?$/, name) === null) {
		throw new $SyntaxError('`%` may not be present anywhere but at the beginning and end of the intrinsic name');
		@@ -264,0 +264,0 @@ }

Improved metrics