minify

babel-preset-minify

安装

安装

npm install --save-dev babel-preset-minify

使用

通过 .babelrc (推荐)

.babelrc

{
  "presets": ["minify"]
}

或者添加选项 -

{
  "presets": [["minify", {
    "mangle": {
      "exclude": ["MyCustomError"]
    },
    "unsafe": {
      "typeConstructors": false
    },
    "keepFnName": true
  }]]
}

通过 CLI

babel script.js --presets minify

通过 Node API

require("babel-core").transform("code", {
  presets: ["minify"]
}

选项

包含以下两种选择:

1-1 插件映射

1-1 插件映射

false - 禁用插件

选项名	插件	默认值
booleans	transform-minify-booleans	true
builtIns	minify-builtins	true
consecutiveAdds	transform-inline-consecutive-adds	true
deadcode	minify-dead-code-elimination	true
evaluate	minify-constant-folding	true
flipComparisons	minify-flip-comparisons	true
guards	minify-guarded-expressions	true
infinity	minify-infinity	true
mangle	minify-mangle-names	true
memberExpressions	transform-member-expression-literals	true
mergeVars	transform-merge-sibling-variables	true
numericLiterals	minify-numeric-literals	true
propertyLiterals	transform-property-literals	true
regexpConstructors	transform-regexp-constructors	true
removeConsole	transform-remove-console	false
removeDebugger	transform-remove-debugger	false
removeUndefined	transform-remove-undefined	true
replace	minify-replace	true
simplify	minify-simplify	true
simplifyComparisons	transform-simplify-comparison-operators	true
typeConstructors	minify-type-constructors	true
undefinedToVoid	transform-undefined-to-void	true

相同选项传递给多个插件

当多个插件需要相同选项时，可以简单的声明在相同位置。这些选项会被传递到两个或更多的插件中。

选项名	插件
keepFnName	通过 mangle & deadcode
keepClassName	通过 mangle & deadcode
tdz	通过 builtIns, evaluate, deadcode, removeUndefined

例如

{
  "presets": [["minify", {
    "evaluate": false,
    "mangle": true
  }]]
}

{
  "presets": [["minify", {
    "mangle": {
      "exclude": ["ParserError", "NetworkError"]
    }
  }]]
}

{
  "presets": [["minify", {
    "keepFnName": true
  }]]
}
// 等同于
{
  "presets": [["minify", {
    "mangle": {
      "keepFnName": true
    },
    "deadcode": {
      "keepFnName": true
    }
  }]]
}