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    babel-preset-minifypublic

    babel-preset-minify

    Babel preset for all minify plugins.

    Install

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

    Usage

    Via .babelrc (Recommended)

    .babelrc

    {
      "presets": ["minify"]
    }

    or pass in options -

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

    Via CLI

    babel script.js --presets minify

    Via Node API

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

    Options

    Two types of options:

    1. 1-1 mapping with plugin
    2. The same option passed to multiple plugins

    1-1 mapping with plugin

    • false - disable plugin
    • true - enable plugin
    • { ...pluginOpts } - enable plugin and pass pluginOpts to plugin
    OptionName Plugin DefaultValue
    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

    The same option passed to multiple plugins

    • 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.
    OptionName Plugins
    keepFnName Passed to mangle & deadcode
    keepClassName Passed to mangle & deadcode
    tdz Passed to builtIns, evaluate, deadcode, removeUndefined

    Examples

    {
      "presets": [["minify", {
        "evaluate": false,
        "mangle": true
      }]]
    }
    {
      "presets": [["minify", {
        "mangle": {
          "exclude": ["ParserError", "NetworkError"]
        }
      }]]
    }
    {
      "presets": [["minify", {
        "keepFnName": true
      }]]
    }
    // is the same as
    {
      "presets": [["minify", {
        "mangle": {
          "keepFnName": true
        },
        "deadcode": {
          "keepFnName": true
        }
      }]]
    }

    install

    npm i babel-preset-minify

    Downloadsweekly downloads

    296,763

    version

    0.4.3

    license

    MIT

    repository

    githubgithub

    last publish

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