perf(webpack): use futureEmitAssets

[manniL]

Implement webpack/webpack#8642

Types of changes

• New feature (a non-breaking change which adds functionality)

Description

New option output.futureEmitAssets allows to opt-in to the new way of emitting assets which allows to free memory of Sources with the trade-off of disallowing reading asset content after emitting

Maybe we should make that configurable though 🤔 when problems arise

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.

[pi0]

@manniL Great discovery. Let's see if tests are passing. We can fully test it in edge.

[codecov-io]

Codecov Report

Merging #5003 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #5003   +/-   ##
=======================================
  Coverage   92.23%   92.23%           
=======================================
  Files          74       74           
  Lines        2472     2472           
  Branches      608      608           
=======================================
  Hits         2280     2280           
  Misses        172      172           
  Partials       20       20

Impacted Files	Coverage Δ
packages/webpack/src/config/base.js	95.45% <ø> (ø)	⬆️
packages/webpack/src/plugins/vue/server.js	84.61% <0%> (-3.85%)	⬇️
packages/webpack/src/plugins/vue/client.js	94.28% <0%> (-2.86%)	⬇️
packages/vue-renderer/src/renderer.js	95.85% <0%> (+1.03%)	⬆️

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