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webpack v5.0.0-rc.4 Release Notes

Release Date: 2020-10-07 // over 3 years ago

  • 🔋 Features

    • optimization.sideEffects will detect simple cases of modules without side effects from the source code now
      • supported: class and function declarations, variable declarations with pure init expression, if, while, for, switch, export, import, function calls with pure flag
    • ➕ added a "transitive only" side effects mode which drops the module but keeps dependencies
      • This is useful for mini-css-extract-plugin to allow droping the extracted JS, while keeping the CSS dependencies

    🛠 Bugfixes

    • accessing properties of the prototype from imported modules is now possible. They are no longer incorrectly mangled.

    Dependencies

    • ⚡️ update schema-utils to major 3
    • ⚡️ update acorn to major 8