115 lines
5.3 KiB
Markdown
115 lines
5.3 KiB
Markdown
# @putout/minify [![NPM version][NPMIMGURL]][NPMURL] [![Coverage Status][CoverageIMGURL]][CoverageURL]
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[NPMIMGURL]: https://img.shields.io/npm/v/@putout/minify.svg?style=flat&longCache=true
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[NPMURL]: https://npmjs.org/package/@putout/minify "npm"
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[CoverageURL]: https://coveralls.io/github/putoutjs/minify?branch=master
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[CoverageIMGURL]: https://coveralls.io/repos/putoutjs/minify/badge.svg?branch=master&service=github
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🐊[**Putout**](https://github.com/coderaiser/putout)-based JavaScript minifier.
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## Install
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```sh
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npm i @putout/minify
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```
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## Supported minifier transforms
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Here is list of supported 🐊**Putout** transformations:
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- ✅ [`apply-template-literals`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-apply-template-literals#readme);
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- ✅ [`apply-optional-chaining`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-apply-optional-chaining#readme);
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- ✅ [`conditions`](https://github.com/coderaiser/putout/tree/v29.10.0/packages/plugin-conditions#readme);
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- ✅ [`convert-to-arrow-function`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-convert-to-arrow-functions#readme);
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- ✅ [`convert-arguments-to-rest`](https://github.com/coderaiser/putout/tree/v29.10.1/packages/plugin-convert-arguments-to-rest#readme);
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- ✅ [`declare`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-declare#readme);
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- ✅ [`extract-sequence-expressions`](https://github.com/coderaiser/putout/tree/v34.0.0/packages/plugin-extract-sequence-expressions#readme);
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- ✅ [`for-of`](https://github.com/coderaiser/putout/tree/v34.0.0/packages/plugin-for-of#readme);
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- ✅ [`logical-expressions`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-logical-expressions#readme);
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- ✅ [`merge-duplicate-functions`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-merge-duplicate-functions#readme);
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- ✅ [`merge-duplicate-imports`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-merge-duplicate-imports#readme);
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- ✅ [`merge-destructuring-properties`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-merge-destructuring-properties#readme);
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- ✅ [`minify`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-minify#readme);
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- ✅ [`new`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-new#readme);
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- ✅ [`regexp`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-regexp#readme);
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- ✅ [`reuse-duplicate-init`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-reuse-duplicate-init#readme);
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- ✅ [`remove-empty`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-empty#readme);
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- ✅ [`remove-nested-blocks`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-nested-blocks#readme);
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- ✅ [`remove-unused-variables`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-unused-variables#readme);
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- ✅ [`remove-unused-expressions`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-unused-expressions#readme);
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- ✅ [`remove-unreferenced-variables`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-unreferenced-variables#readme);
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- ✅ [`remove-useless-arguments`](https://github.com/coderaiser/putout/tree/master/packages/plugin-remove-useless-arguments#readme);
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- ✅ [`remove-useless-else`](https://github.com/coderaiser/putout/tree/master/packages/plugin-remove-useless-else#readme);
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- ✅ [`remove-useless-return`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-useless-return#readme);
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- ✅ [`remove-useless-spread`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-useless-spread/#readme);
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- ✅ [`remove-useless-variables`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-useless-variables#readme);
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- ✅ [`remove-console`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-console#readme);
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- ✅ [`remove-debugger`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-debugger#readme);
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- ✅ [`remove-unreachable-code`](https://github.com/coderaiser/putout/tree/v29.0.0/packages/plugin-remove-unreachable-code#readme);
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- ✅ [`simplify-ternary`](https://github.com/coderaiser/putout/tree/v34.0.0/packages/plugin-simplify-ternary#readme);
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- ✅ [`types`](https://github.com/coderaiser/putout/tree/v29.7.1/packages/plugin-types#readme);
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## API
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```js
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import {minify} from '@putout/minify';
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minify(`
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const a = 5;
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const b = 6;
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fn(a, b);
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`);
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```
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```
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// returns
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var a=5,b=6;fn(a,b);
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```
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### Options
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You can also pass options to `minify`. Here is list of default options:
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```js
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({
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mangleClassNames: true,
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mangle: true,
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removeUnusedVariables: true,
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removeConsole: false,
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removeUselessSpread: true,
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applyTemplateLiterals: true,
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});
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```
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And usage example:
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```js
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import {minify} from '@putout/minify';
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const source = `
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const a = 5;
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const b = 6;
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`;
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minify(source, {
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removeUnusedVariables: true,
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});
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```
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### How it's compared to [Terser](https://github.com/terser/terser)?
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For [such code](https://github.com/coderaiser/minify/issues/96#issuecomment-1546605157):
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- 🔥 `@putout/minify`: `473B`
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- ❌ `terser`: `482B`
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`react.js`:
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- 🔥 `@putout/minify`: `16309B`
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- ❌ `terser`: `16346B`
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## License
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MIT
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