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- # unicode-match-property-value-ecmascript [![Build status](https://travis-ci.org/mathiasbynens/unicode-match-property-value-ecmascript.svg?branch=master)](https://travis-ci.org/mathiasbynens/unicode-match-property-value-ecmascript)
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- _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.
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- ## Installation
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- To use _unicode-match-property-value-ecmascript_ programmatically, install it as a dependency via [npm](https://www.npmjs.com/):
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- ```bash
- $ npm install unicode-match-property-value-ecmascript
- ```
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- Then, `require` it:
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- ```js
- const matchPropertyValue = require('unicode-match-property-value-ecmascript');
- ```
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- ## API
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- This module exports a single function named `matchPropertyValue`.
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- ### `matchPropertyValue(property, value)`
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- 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.
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- ```js
- // Find the canonical property value:
- matchPropertyValue('Script_Extensions', 'Aghb')
- // → 'Caucasian_Albanian'
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- matchPropertyValue('Script_Extensions', 'Caucasian_Albanian')
- // → 'Caucasian_Albanian'
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- matchPropertyValue('script_extensions', 'Caucasian_Albanian') // Note: incorrect casing.
- // → throws
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- matchPropertyValue('Script_Extensions', 'caucasian_albanian') // Note: incorrect casing.
- // → throws
- ```
-
- ## Author
-
- | [![twitter/mathias](https://gravatar.com/avatar/24e08a9ea84deb17ae121074d0f17125?s=70)](https://twitter.com/mathias "Follow @mathias on Twitter") |
- |---|
- | [Mathias Bynens](https://mathiasbynens.be/) |
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- ## License
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- _unicode-match-property-value-ecmascript_ is available under the [MIT](https://mths.be/mit) license.
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