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123 lines
5.0 KiB
123 lines
5.0 KiB
1 month ago
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# entities [](https://npmjs.org/package/entities) [](https://npmjs.org/package/entities) [](https://github.com/fb55/entities/actions/workflows/nodejs-test.yml)
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Encode & decode HTML & XML entities with ease & speed.
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## Features
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- 😇 Tried and true: `entities` is used by many popular libraries; eg.
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[`htmlparser2`](https://github.com/fb55/htmlparser2), the official
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[AWS SDK](https://github.com/aws/aws-sdk-js-v3) and
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[`commonmark`](https://github.com/commonmark/commonmark.js) use it to
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process HTML entities.
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- ⚡️ Fast: `entities` is the fastest library for decoding HTML entities (as
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of April 2022); see [performance](#performance).
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- 🎛 Configurable: Get an output tailored for your needs. You are fine with
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UTF8? That'll save you some bytes. Prefer to only have ASCII characters? We
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can do that as well!
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## How to…
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### …install `entities`
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npm install entities
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### …use `entities`
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```javascript
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const entities = require("entities");
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// Encoding
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entities.escapeUTF8("& ü"); // "& ü"
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entities.encodeXML("& ü"); // "& ü"
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entities.encodeHTML("& ü"); // "& ü"
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// Decoding
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entities.decodeXML("asdf & ÿ ü '"); // "asdf & ÿ ü '"
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entities.decodeHTML("asdf & ÿ ü '"); // "asdf & ÿ ü '"
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```
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## Performance
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This is how `entities` compares to other libraries on a very basic benchmark
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(see `scripts/benchmark.ts`, for 10,000,000 iterations; **lower is better**):
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| Library | Version | `decode` perf | `encode` perf | `escape` perf |
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| -------------- | ------- | ------------- | ------------- | ------------- |
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| entities | `3.0.1` | 1.418s | 6.786s | 2.196s |
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| html-entities | `2.3.2` | 2.530s | 6.829s | 2.415s |
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| he | `1.2.0` | 5.800s | 24.237s | 3.624s |
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| parse-entities | `3.0.0` | 9.660s | N/A | N/A |
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---
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## FAQ
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> What methods should I actually use to encode my documents?
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If your target supports UTF-8, the `escapeUTF8` method is going to be your best
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choice. Otherwise, use either `encodeHTML` or `encodeXML` based on whether
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you're dealing with an HTML or an XML document.
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You can have a look at the options for the `encode` and `decode` methods to see
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everything you can configure.
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> When should I use strict decoding?
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When strict decoding, entities not terminated with a semicolon will be ignored.
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This is helpful for decoding entities in legacy environments.
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> Why should I use `entities` instead of alternative modules?
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As of April 2022, `entities` is a bit faster than other modules. Still, this is
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not a very differentiated space and other modules can catch up.
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**More importantly**, you might already have `entities` in your dependency graph
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(as a dependency of eg. `cheerio`, or `htmlparser2`), and including it directly
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might not even increase your bundle size. The same is true for other entity
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libraries, so have a look through your `node_modules` directory!
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> Does `entities` support tree shaking?
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Yes! `entities` ships as both a CommonJS and a ES module. Note that for best
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results, you should not use the `encode` and `decode` functions, as they wrap
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around a number of other functions, all of which will remain in the bundle.
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Instead, use the functions that you need directly.
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---
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## Acknowledgements
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This library wouldn't be possible without the work of these individuals. Thanks
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to
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- [@mathiasbynens](https://github.com/mathiasbynens) for his explanations
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about character encodings, and his library `he`, which was one of the
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inspirations for `entities`
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- [@inikulin](https://github.com/inikulin) for his work on optimized tries for
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decoding HTML entities for the `parse5` project
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- [@mdevils](https://github.com/mdevils) for taking on the challenge of
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producing a quick entity library with his `html-entities` library.
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`entities` would be quite a bit slower if there wasn't any competition.
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Right now `entities` is on top, but we'll see how long that lasts!
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---
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License: BSD-2-Clause
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## Security contact information
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To report a security vulnerability, please use the
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[Tidelift security contact](https://tidelift.com/security). Tidelift will
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coordinate the fix and disclosure.
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## `entities` for enterprise
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Available as part of the Tidelift Subscription
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The maintainers of `entities` and thousands of other packages are working with
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Tidelift to deliver commercial support and maintenance for the open source
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dependencies you use to build your applications. Save time, reduce risk, and
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improve code health, while paying the maintainers of the exact dependencies you
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use.
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[Learn more.](https://tidelift.com/subscription/pkg/npm-entities?utm_source=npm-entities&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)
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