(based on 4.33.0)

Features

when exporting imported namespace objects, they are now tracked for Tree Shaking
added experiments config option which allows to enable experimental features
- Note that these experiments have relaxed SemVer compatibility (breaking changes to experimental feature may occur in minor version)
(BREAKING CHANGE) .mjs support is now disabled by default and can be enabled with experiments.mjs: true
(BREAKING CHANGE) WebAssembly support is now disabled by default and can be enabled with experiments.syncWebAssembly: true or experiments.asyncWebAssembly: true
- experiments.syncWebAssembly: true: The implementation used in webpack 4
- experiments.asyncWebAssembly: true: The updated spec based on async modules
added experiments.importAwait: true to allow to use import await and export await to import/reexport async modules
added experiments.importAsync: true which allows normal import and export to import/reexport async modules
added experiments.topLevelAwait: true which allows to use await in EcmaScript Modules on top-level (makes the module an async module)

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