Minify Options

[boopathi]

• (Close Minify options #54)

Each option corresponds to and enables/disables a plugin if the value is truthy. If the value is an object, it passes the object as the plugin options. The test snapshot file explains about the possibilities.

Options Manager spec:

/**
 * Options Manager
 *
 * Input Options: Object
 * Output: Array of plugins enabled with their options
 *
 * Handles multiple types of input option keys
 *
 * 1. boolean and object values
 * { mangle: true } // should enable mangler
 * { mangle: { blacklist: ["foo"] } } // should enabled mangler
 *                                    // and pass obj to mangle plugin
 *
 * 2. group
 * { unsafe: true } // should enable all plugins under unsafe
 * { unsafe: { flip: false } } // should disable flip-comparisons plugin
 *                             // and other plugins should take their defaults
 * { unsafe: { simplify: {multipass: true}}} // should pass obj to simplify
 *                                           // other plugins take defaults
 *
 * 3. same option passed on to multiple plugins
 * { keepFnames: false } // should be passed on to mangle & dce
 *                       // without disturbing their own options
 */

---

Options:

[
      optionsMap.evaluate,
      optionsMap.deadcode,

      group("unsafe", [
        optionsMap.flipComparisons,
        optionsMap.simplifyComparisons,
        optionsMap.guards,
        optionsMap.typeConstructors,
      ]),

      optionsMap.infinity,
      optionsMap.mangle,
      optionsMap.numericLiterals,
      optionsMap.replace,
      optionsMap.simplify,

      group("properties", [
        optionsMap.memberExpressions,
        optionsMap.propertyLiterals,
      ]),

      optionsMap.mergeVars,
      optionsMap.booleans,
      optionsMap.undefinedToVoid,
      optionsMap.regexpConstructors,

      optionsMap.removeConsole,
      optionsMap.removeDebugger,
      optionsMap.removeUndefined,

      proxy("keepFnName", [
        optionsMap.mangle,
        optionsMap.deadcode
      ])
]

---

Defaults

const PLUGINS = [
  ["evaluate",            require("babel-plugin-minify-constant-folding"),                 true],
  ["deadcode",            require("babel-plugin-minify-dead-code-elimination"),            true],
  ["flipComparisons",     require("babel-plugin-minify-flip-comparisons"),                 true],
  ["guards",              require("babel-plugin-minify-guarded-expressions"),              true],
  ["infinity",            require("babel-plugin-minify-infinity"),                         true],
  ["mangle",              require("babel-plugin-minify-mangle-names"),                     true],
  ["numericLiterals",     require("babel-plugin-minify-numeric-literals"),                 true],
  ["replace",             require("babel-plugin-minify-replace"),                          true],
  ["simplify",            require("babel-plugin-minify-simplify"),                         true],
  ["typeConstructors",    require("babel-plugin-minify-type-constructors"),                true],
  ["memberExpressions",   require("babel-plugin-transform-member-expression-literals"),    true],
  ["mergeVars",           require("babel-plugin-transform-merge-sibling-variables"),       true],
  ["booleans",            require("babel-plugin-transform-minify-booleans"),               true],
  ["propertyLiterals",    require("babel-plugin-transform-property-literals"),             true],
  ["regexpConstructors",  require("babel-plugin-transform-regexp-constructors"),           true],
  ["removeConsole",       require("babel-plugin-transform-remove-console"),                false],
  ["removeDebugger",      require("babel-plugin-transform-remove-debugger"),               false],
  ["removeUndefined",     require("babel-plugin-transform-remove-undefined"),              true],
  ["simplifyComparisons", require("babel-plugin-transform-simplify-comparison-operators"), true],
  ["undefinedToVoid",     require("babel-plugin-transform-undefined-to-void"),             true],
];

[kangax]

@boopathi could you rebase this?

[boopathi]

Missed regexp-constructors. will add that.