mirror of
https://github.com/S2-/minifyfromhtml.git
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167 lines
5.5 KiB
Markdown
167 lines
5.5 KiB
Markdown
# babel-preset-minify
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Babel preset for all minify plugins.
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+ [Install](#install)
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+ [Usage](#usage)
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+ [Options](#options)
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## Install
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```sh
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npm install --save-dev babel-preset-minify
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```
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## Usage
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### Via `.babelrc` (Recommended)
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**.babelrc**
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```json
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{
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"presets": ["minify"]
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}
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```
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or pass in options -
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```json
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{
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"presets": [["minify", {
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"mangle": {
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"exclude": ["MyCustomError"]
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},
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"unsafe": {
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"typeConstructors": false
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},
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"keepFnName": true
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}]]
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}
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```
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### Via CLI
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```sh
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babel script.js --presets minify
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```
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### Via Node API
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```javascript
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require("@babel/core").transform("code", {
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presets: ["minify"]
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});
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```
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## Options
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Two types of options:
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1. 1-1 mapping with plugin
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2. The same option passed to multiple plugins
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#### 1-1 mapping with plugin
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+ `false` - disable plugin
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+ `true` - enable plugin
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+ `{ ...pluginOpts }` - enable plugin and pass pluginOpts to plugin
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OptionName | Plugin | DefaultValue
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---------- | ------ | ------------
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booleans | [transform-minify-booleans][booleans] | true
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builtIns | [minify-builtins][builtIns] | true
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consecutiveAdds | [transform-inline-consecutive-adds][consecutiveAdds] | true
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deadcode | [minify-dead-code-elimination][deadcode] | true
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evaluate | [minify-constant-folding][evaluate] | true
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flipComparisons | [minify-flip-comparisons][flipComparisons] | true
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guards | [minify-guarded-expressions][guards] | true
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infinity | [minify-infinity][infinity] | true
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mangle | [minify-mangle-names][mangle] | true
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memberExpressions | [transform-member-expression-literals][memberExpressions] | true
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mergeVars | [transform-merge-sibling-variables][mergeVars] | true
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numericLiterals | [minify-numeric-literals][numericLiterals] | true
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propertyLiterals | [transform-property-literals][propertyLiterals] | true
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regexpConstructors | [transform-regexp-constructors][regexpConstructors] | true
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removeConsole | [transform-remove-console][removeConsole] | false
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removeDebugger | [transform-remove-debugger][removeDebugger] | false
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removeUndefined | [transform-remove-undefined][removeUndefined] | true
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replace | [minify-replace][replace] | true
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simplify | [minify-simplify][simplify] | true
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simplifyComparisons | [transform-simplify-comparison-operators][simplifyComparisons] | true
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typeConstructors | [minify-type-constructors][typeConstructors] | true
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undefinedToVoid | [transform-undefined-to-void][undefinedToVoid] | true
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#### The same option passed to multiple plugins
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+ When multiple plugins require the same option, it's easier to declare it in one place. These options are passed on to two or more plugins.
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OptionName | Plugins
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---------- | -------
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keepFnName | Passed to [mangle][mangle] & [deadcode][deadcode]
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keepClassName | Passed to [mangle][mangle] & [deadcode][deadcode]
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tdz | Passed to [builtIns][builtIns], [evaluate][evaluate], [deadcode][deadcode], [removeUndefined][removeUndefined]
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**Examples**
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```json
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{
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"presets": [["minify", {
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"evaluate": false,
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"mangle": true
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}]]
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}
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```
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```json
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{
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"presets": [["minify", {
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"mangle": {
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"exclude": ["ParserError", "NetworkError"]
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}
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}]]
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}
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```
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```json
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{
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"presets": [["minify", {
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"keepFnName": true
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}]]
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}
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// is the same as
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{
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"presets": [["minify", {
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"mangle": {
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"keepFnName": true
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},
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"deadcode": {
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"keepFnName": true
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}
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}]]
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}
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```
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[booleans]: ../../packages/babel-plugin-transform-minify-booleans
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[builtIns]: ../../packages/babel-plugin-minify-builtins
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[consecutiveAdds]: ../../packages/babel-plugin-transform-inline-consecutive-adds
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[deadcode]: ../../packages/babel-plugin-minify-dead-code-elimination
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[evaluate]: ../../packages/babel-plugin-minify-constant-folding
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[flipComparisons]: ../../packages/babel-plugin-minify-flip-comparisons
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[guards]: ../../packages/babel-plugin-minify-guarded-expressions
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[infinity]: ../../packages/babel-plugin-minify-infinity
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[mangle]: ../../packages/babel-plugin-minify-mangle-names
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[memberExpressions]: ../../packages/babel-plugin-transform-member-expression-literals
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[mergeVars]: ../../packages/babel-plugin-transform-merge-sibling-variables
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[numericLiterals]: ../../packages/babel-plugin-minify-numeric-literals
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[propertyLiterals]: ../../packages/babel-plugin-transform-property-literals
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[regexpConstructors]: ../../packages/babel-plugin-transform-regexp-constructors
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[removeConsole]: ../../packages/babel-plugin-transform-remove-console
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[removeDebugger]: ../../packages/babel-plugin-transform-remove-debugger
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[removeUndefined]: ../../packages/babel-plugin-transform-remove-undefined
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[replace]: ../../packages/babel-plugin-minify-replace
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[simplify]: ../../packages/babel-plugin-minify-simplify
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[simplifyComparisons]: ../../packages/babel-plugin-transform-simplify-comparison-operators
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[typeConstructors]: ../../packages/babel-plugin-minify-type-constructors
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[undefinedToVoid]: ../../packages/babel-plugin-transform-undefined-to-void
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