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69 lines
2.0 KiB
69 lines
2.0 KiB
3 years ago
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# @polka/url [](https://npmjs.org/package/@polka/url)
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> Super fast, memoized `req.url` parser; _not_ limited to [Polka][polka]!
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Parses the `url` from a [`IncomingMessage`](https://nodejs.org/api/http.html#http_class_http_incomingmessage) request. The returned object will always only contain the following keys: `search`, `query`, `pathname`, and `raw`.
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> **Note:** This library does not process `protocol`, `hostname`, `port`, etc.<br>This is because the incoming `req.url` value only begins with the path information.
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Parsed requests will be mutated with a `_parsedUrl` key, containing the returned output. This is used for future memoization, avoiding the need to fully parse the same `url` value multiple times.
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## Install
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```
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$ npm install --save @polka/url
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```
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## Usage
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```js
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const parse = require('@polka/url');
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let req = {
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url: '/foo/bar?fizz=buzz'
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};
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let output = parse(req);
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//=> {
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//=> pathname: '/foo/bar',
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//=> raw: '/foo/bar?fizz=buzz',
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//=> search: '?fizz=buzz',
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//=> query: {
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//=> fizz: 'buzz'
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//=> },
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//=> }
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// Attaches result for future memoization
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assert.deepEqual(output, req._parsedUrl); //=> true
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```
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## API
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### url(req)
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Returns: `Object` or `undefined`
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> **Important:** The `req` must have a `url` key, otherwise `undefined` will be returned.<br>If no input is provided at all, a `TypeError` will be thrown.
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#### req
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Type: `IncomingMessage` or `{ url: string }`
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The incoming HTTP request (`req`) or a plain `Object` with a `url` key.
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> **Note:** In Node.js servers, the [`req.url`](https://nodejs.org/api/http.html#http_message_url) begins with a pathname & does not include a `hash`.
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## Benchmarks
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Check out the [`bench`](/bench) directory for in-depth benchmark results and comparisons.
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## Support
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Any issues or questions can be sent to the [Polka][polka] repository.<br>However, please specify that your inquiry is about `@polka/url` specifically.
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## License
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MIT © [Luke Edwards](https://lukeed.com)
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[polka]: https://github.com/lukeed/polka
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