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- # unicode-match-property-value-ecmascript [](https://www.npmjs.com/package/unicode-match-property-value-ecmascript)
- _unicode-match-property-value-ecmascript_ matches a given Unicode property value or [property value alias](https://github.com/mathiasbynens/unicode-property-value-aliases) to its canonical property value without applying [loose matching](https://github.com/mathiasbynens/unicode-loose-match), per the algorithm used for [RegExp Unicode property escapes in ECMAScript](https://github.com/tc39/proposal-regexp-unicode-property-escapes). Consider it a strict alternative to loose matching.
- ## Installation
- To use _unicode-match-property-value-ecmascript_ programmatically, install it as a dependency via [npm](https://www.npmjs.com/):
- ```bash
- $ npm install unicode-match-property-value-ecmascript
- ```
- Then, `require` it:
- ```js
- const matchPropertyValue = require('unicode-match-property-value-ecmascript');
- ```
- ## API
- This module exports a single function named `matchPropertyValue`.
- ### `matchPropertyValue(property, value)`
- This function takes a string `property` that is a canonical/unaliased Unicode property name, and a string `value`. It attemps to match `value` to a canonical Unicode property value for the given property. If there’s a match, it returns the canonical property value. Otherwise, it throws an exception.
- ```js
- // Find the canonical property value:
- matchPropertyValue('Script_Extensions', 'Aghb')
- // → 'Caucasian_Albanian'
- matchPropertyValue('Script_Extensions', 'Caucasian_Albanian')
- // → 'Caucasian_Albanian'
- matchPropertyValue('script_extensions', 'Caucasian_Albanian') // Note: incorrect casing.
- // → throws
- matchPropertyValue('Script_Extensions', 'caucasian_albanian') // Note: incorrect casing.
- // → throws
- ```
- ## For maintainers
- ### How to publish a new release
- 1. On the `main` branch, bump the version number in `package.json`:
- ```sh
- npm version patch -m 'Release v%s'
- ```
- Instead of `patch`, use `minor` or `major` [as needed](https://semver.org/).
- Note that this produces a Git commit + tag.
- 1. Push the release commit and tag:
- ```sh
- git push && git push --tags
- ```
- Our CI then automatically publishes the new release to npm.
- ## Author
- | [](https://twitter.com/mathias "Follow @mathias on Twitter") |
- |---|
- | [Mathias Bynens](https://mathiasbynens.be/) |
- ## License
- _unicode-match-property-value-ecmascript_ is available under the [MIT](https://mths.be/mit) license.
|
