44 lines
1.9 KiB
Markdown
44 lines
1.9 KiB
Markdown
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# es-abstract <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
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[![dependency status][deps-svg]][deps-url]
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[![dev dependency status][dev-deps-svg]][dev-deps-url]
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[![License][license-image]][license-url]
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[![Downloads][downloads-image]][downloads-url]
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[![npm badge][npm-badge-png]][package-url]
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ECMAScript spec abstract operations.
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Every operation is available by edition/year and by name - for example, `es-abstract/2020/Call` gives you the `Call` operation from ES2020, `es-abstract/5/Type` gives you the `Type` operation from ES5.
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All abstract operations are also available under an `es5`/`es2015`/`es2016`/`es2017`/`es2018`/`es2019`/`es2020`/`es2021` entry point, and as a property on the `main` export, but using deep imports is highly encouraged for bundle size and performance reasons. Non-deep entry points will be removed in the next semver-major release.
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## Example
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```js
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var ES = require('es-abstract');
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var assert = require('assert');
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assert(ES.isCallable(function () {}));
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assert(!ES.isCallable(/a/g));
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```
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## Tests
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Simply clone the repo, `npm install`, and run `npm test`
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## Security
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Please email [@ljharb](https://github.com/ljharb) or see https://tidelift.com/security if you have a potential security vulnerability to report.
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[package-url]: https://npmjs.org/package/es-abstract
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[npm-version-svg]: https://versionbadg.es/ljharb/es-abstract.svg
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[deps-svg]: https://david-dm.org/ljharb/es-abstract.svg
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[deps-url]: https://david-dm.org/ljharb/es-abstract
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[dev-deps-svg]: https://david-dm.org/ljharb/es-abstract/dev-status.svg
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[dev-deps-url]: https://david-dm.org/ljharb/es-abstract#info=devDependencies
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[npm-badge-png]: https://nodei.co/npm/es-abstract.png?downloads=true&stars=true
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[license-image]: https://img.shields.io/npm/l/es-abstract.svg
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[license-url]: LICENSE
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[downloads-image]: https://img.shields.io/npm/dm/es-abstract.svg
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[downloads-url]: https://npm-stat.com/charts.html?package=es-abstract
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