mirror of
https://github.com/idanoo/GoScrobble.git
synced 2024-11-25 09:55:15 +00:00
138 lines
4.4 KiB
Markdown
138 lines
4.4 KiB
Markdown
# emoji-regex [](https://travis-ci.org/mathiasbynens/emoji-regex)
|
||
|
||
_emoji-regex_ offers a regular expression to match all emoji symbols and sequences (including textual representations of emoji) as per the Unicode Standard.
|
||
|
||
This repository contains a script that generates this regular expression based on [Unicode data](https://github.com/node-unicode/node-unicode-data). Because of this, the regular expression can easily be updated whenever new emoji are added to the Unicode standard.
|
||
|
||
## Installation
|
||
|
||
Via [npm](https://www.npmjs.com/):
|
||
|
||
```bash
|
||
npm install emoji-regex
|
||
```
|
||
|
||
In [Node.js](https://nodejs.org/):
|
||
|
||
```js
|
||
const emojiRegex = require('emoji-regex/RGI_Emoji.js');
|
||
// Note: because the regular expression has the global flag set, this module
|
||
// exports a function that returns the regex rather than exporting the regular
|
||
// expression itself, to make it impossible to (accidentally) mutate the
|
||
// original regular expression.
|
||
|
||
const text = `
|
||
\u{231A}: ⌚ default emoji presentation character (Emoji_Presentation)
|
||
\u{2194}\u{FE0F}: ↔️ default text presentation character rendered as emoji
|
||
\u{1F469}: 👩 emoji modifier base (Emoji_Modifier_Base)
|
||
\u{1F469}\u{1F3FF}: 👩🏿 emoji modifier base followed by a modifier
|
||
`;
|
||
|
||
const regex = emojiRegex();
|
||
let match;
|
||
while (match = regex.exec(text)) {
|
||
const emoji = match[0];
|
||
console.log(`Matched sequence ${ emoji } — code points: ${ [...emoji].length }`);
|
||
}
|
||
```
|
||
|
||
Console output:
|
||
|
||
```
|
||
Matched sequence ⌚ — code points: 1
|
||
Matched sequence ⌚ — code points: 1
|
||
Matched sequence ↔️ — code points: 2
|
||
Matched sequence ↔️ — code points: 2
|
||
Matched sequence 👩 — code points: 1
|
||
Matched sequence 👩 — code points: 1
|
||
Matched sequence 👩🏿 — code points: 2
|
||
Matched sequence 👩🏿 — code points: 2
|
||
```
|
||
|
||
## Regular expression flavors
|
||
|
||
The package comes with three distinct regular expressions:
|
||
|
||
```js
|
||
// This is the recommended regular expression to use. It matches all
|
||
// emoji recommended for general interchange, as defined via the
|
||
// `RGI_Emoji` property in the Unicode Standard.
|
||
// https://unicode.org/reports/tr51/#def_rgi_set
|
||
// When in doubt, use this!
|
||
const emojiRegexRGI = require('emoji-regex/RGI_Emoji.js');
|
||
|
||
// This is the old regular expression, prior to `RGI_Emoji` being
|
||
// standardized. In addition to all `RGI_Emoji` sequences, it matches
|
||
// some emoji you probably don’t want to match (such as emoji component
|
||
// symbols that are not meant to be used separately).
|
||
const emojiRegex = require('emoji-regex/index.js');
|
||
|
||
// This regular expression matches even more emoji than the previous
|
||
// one, including emoji that render as text instead of icons (i.e.
|
||
// emoji that are not `Emoji_Presentation` symbols and that aren’t
|
||
// forced to render as emoji by a variation selector).
|
||
const emojiRegexText = require('emoji-regex/text.js');
|
||
```
|
||
|
||
Additionally, in environments which support ES2015 Unicode escapes, you may `require` ES2015-style versions of the regexes:
|
||
|
||
```js
|
||
const emojiRegexRGI = require('emoji-regex/es2015/RGI_Emoji.js');
|
||
const emojiRegex = require('emoji-regex/es2015/index.js');
|
||
const emojiRegexText = require('emoji-regex/es2015/text.js');
|
||
```
|
||
|
||
## For maintainers
|
||
|
||
### How to update emoji-regex after new Unicode Standard releases
|
||
|
||
1. Update the Unicode data dependency in `package.json` by running the following commands:
|
||
|
||
```sh
|
||
# Example: updating from Unicode v12 to Unicode v13.
|
||
npm uninstall @unicode/unicode-12.0.0
|
||
npm install @unicode/unicode-13.0.0 --save-dev
|
||
````
|
||
|
||
1. Generate the new output:
|
||
|
||
```sh
|
||
npm run build
|
||
```
|
||
|
||
1. Verify that tests still pass:
|
||
|
||
```sh
|
||
npm test
|
||
```
|
||
|
||
1. Send a pull request with the changes, and get it reviewed & merged.
|
||
|
||
1. On the `main` branch, bump the emoji-regex 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
|
||
```
|
||
|
||
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
|
||
|
||
_emoji-regex_ is available under the [MIT](https://mths.be/mit) license.
|