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88 lines
2.8 KiB
Markdown
88 lines
2.8 KiB
Markdown
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# ansi-regex [](https://travis-ci.org/chalk/ansi-regex)
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> Regular expression for matching [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code)
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---
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<div align="center">
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<b>
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<a href="https://tidelift.com/subscription/pkg/npm-ansi-regex?utm_source=npm-ansi-regex&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
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</b>
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<br>
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<sub>
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Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
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</sub>
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</div>
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---
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## Install
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```
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$ npm install ansi-regex
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```
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## Usage
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```js
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const ansiRegex = require('ansi-regex');
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ansiRegex().test('\u001B[4mcake\u001B[0m');
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//=> true
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ansiRegex().test('cake');
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//=> false
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'\u001B[4mcake\u001B[0m'.match(ansiRegex());
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//=> ['\u001B[4m', '\u001B[0m']
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'\u001B[4mcake\u001B[0m'.match(ansiRegex({onlyFirst: true}));
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//=> ['\u001B[4m']
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'\u001B]8;;https://github.com\u0007click\u001B]8;;\u0007'.match(ansiRegex());
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//=> ['\u001B]8;;https://github.com\u0007', '\u001B]8;;\u0007']
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```
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## API
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### ansiRegex([options])
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Returns a regex for matching ANSI escape codes.
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#### options
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##### onlyFirst
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Type: `boolean`<br>
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Default: `false` *(Matches any ANSI escape codes in a string)*
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Match only the first ANSI escape.
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## FAQ
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### Why do you test for codes not in the ECMA 48 standard?
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Some of the codes we run as a test are codes that we acquired finding various lists of non-standard or manufacturer specific codes. We test for both standard and non-standard codes, as most of them follow the same or similar format and can be safely matched in strings without the risk of removing actual string content. There are a few non-standard control codes that do not follow the traditional format (i.e. they end in numbers) thus forcing us to exclude them from the test because we cannot reliably match them.
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On the historical side, those ECMA standards were established in the early 90's whereas the VT100, for example, was designed in the mid/late 70's. At that point in time, control codes were still pretty ungoverned and engineers used them for a multitude of things, namely to activate hardware ports that may have been proprietary. Somewhere else you see a similar 'anarchy' of codes is in the x86 architecture for processors; there are a ton of "interrupts" that can mean different things on certain brands of processors, most of which have been phased out.
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## Security
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To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
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## Maintainers
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- [Sindre Sorhus](https://github.com/sindresorhus)
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- [Josh Junon](https://github.com/qix-)
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## License
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MIT
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