76 lines
3.3 KiB
Plaintext
76 lines
3.3 KiB
Plaintext
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# string.prototype.matchall <sup>[![Version Badge][npm-version-svg]][package-url]</sup>
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[![github actions][actions-image]][actions-url]
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[![coverage][codecov-image]][codecov-url]
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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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ES2020 spec-compliant shim for String.prototype.matchAll. Invoke its "shim" method to shim `String.prototype.matchAll` if it is unavailable or noncompliant.
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This package implements the [es-shim API](https://github.com/es-shims/api) interface. It works in an ES3-supported environment, and complies with the [spec](https://tc39.es/ecma262/#sec-string.prototype.matchall).
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Most common usage:
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```js
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const assert = require('assert');
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const matchAll = require('string.prototype.matchall');
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const str = 'aabc';
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const nonRegexStr = 'ab';
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const globalRegex = /[ac]/g;
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const nonGlobalRegex = /[bc]/i;
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// non-regex arguments are coerced into a global regex
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assert.deepEqual(
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[...matchAll(str, nonRegexStr)],
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[...matchAll(str, new RegExp(nonRegexStr, 'g'))]
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);
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assert.deepEqual([...matchAll(str, globalRegex)], [
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Object.assign(['a'], { index: 0, input: str, groups: undefined }),
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Object.assign(['a'], { index: 1, input: str, groups: undefined }),
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Object.assign(['c'], { index: 3, input: str, groups: undefined }),
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]);
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assert.throws(() => matchAll(str, nonGlobalRegex)); // non-global regexes throw
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matchAll.shim(); // will be a no-op if not needed
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// non-regex arguments are coerced into a global regex
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assert.deepEqual(
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[...str.matchAll(nonRegexStr)],
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[...str.matchAll(new RegExp(nonRegexStr, 'g'))]
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);
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assert.deepEqual([...str.matchAll(globalRegex)], [
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Object.assign(['a'], { index: 0, input: str, groups: undefined }),
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Object.assign(['a'], { index: 1, input: str, groups: undefined }),
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Object.assign(['c'], { index: 3, input: str, groups: undefined }),
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]);
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assert.throws(() => matchAll(str, nonGlobalRegex)); // non-global regexes throw
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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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[package-url]: https://npmjs.com/package/string.prototype.matchall
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[npm-version-svg]: https://versionbadg.es/es-shims/String.prototype.matchAll.svg
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[deps-svg]: https://david-dm.org/es-shims/String.prototype.matchAll.svg
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[deps-url]: https://david-dm.org/es-shims/String.prototype.matchAll
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[dev-deps-svg]: https://david-dm.org/es-shims/String.prototype.matchAll/dev-status.svg
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[dev-deps-url]: https://david-dm.org/es-shims/String.prototype.matchAll#info=devDependencies
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[npm-badge-png]: https://nodei.co/npm/string.prototype.matchall.png?downloads=true&stars=true
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[license-image]: https://img.shields.io/npm/l/string.prototype.matchall.svg
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[license-url]: LICENSE
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[downloads-image]: https://img.shields.io/npm/dm/string.prototype.matchall.svg
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[downloads-url]: https://npm-stat.com/charts.html?package=string.prototype.matchall
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[codecov-image]: https://codecov.io/gh/es-shims/String.prototype.matchAll/branch/main/graphs/badge.svg
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[codecov-url]: https://app.codecov.io/gh/es-shims/String.prototype.matchAll/
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[actions-image]: https://img.shields.io/endpoint?url=https://github-actions-badge-u3jn4tfpocch.runkit.sh/es-shims/String.prototype.matchAll
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[actions-url]: https://github.com/es-shims/String.prototype.matchAll/actions
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