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84 lines
2.4 KiB
84 lines
2.4 KiB
6 months ago
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# OS locale detector (os-locale-s)
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[](https://lgtm.com/projects/g/jeffy-g/os-locale-s/context:javascript)  
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__Its a light weight version that minimizes the dependency module of `os-locale`__
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> Get the system [locale](https://en.wikipedia.org/wiki/Locale_(computer_software))
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Useful for localizing your module or app.
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POSIX systems: The returned locale refers to the [`LC_MESSAGE`](http://www.gnu.org/software/libc/manual/html_node/Locale-Categories.html#Locale-Categories) category, suitable for selecting the language used in the user interface for message translation.
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## Motivacion
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I was creating a module package and needed to detect the **locale**.
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At that time, I found a module `os-locale` that provides the corresponding function in the npm package.
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I just wanted to detect locale token such as "cs", "de", "es", "fr" etc but
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`os-locale` installs as many as 27 npm packages, including indirectly dependent modules
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+ e.g - `yarn add os-locale`
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I just wanted to detect a simple locale token but thought this was overwork and decided to rewrite the code.
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At the same time, has been migrate to `TypeScript` as well.
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> As a result, the number of npm packages installed in `os-locale-s` has been reduced to 3 including `os-locale-s`
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## Install
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```
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$ npm install os-locale-s
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```
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## Usage
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```js
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// node (commenjs)
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const { osLocale } = require("os-locale-s");
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(async () => {
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console.log(await osLocale());
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//=> 'en-US'
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})();
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```
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```ts
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// ECMA module
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import { osLocale } from "os-locale-s";
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(async () => {
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console.log(await osLocale());
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//=> 'en-US'
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})();
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```
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## API
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### osLocale(options?)
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Returns a `Promise` for the locale.
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### osLocale.sync(options?)
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Returns the locale.
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#### options
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Type: `object`
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##### spawn
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Type: `boolean`\
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Default: `true`
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Set to `false` to avoid spawning subprocesses and instead only resolve the locale from environment variables. (`process.env`)
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##### cache
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Type: `boolean`\
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Default: `true`
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Once the locale is detected, its value is retained and reused at the second and subsequent detections.
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If set to `false`, the last held value will be ignored and do locale detection again (and the resulting value is not preserved)
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