This PR is not meant to be merged, but is able to run unit tests with webpack@5
When all green - we have support for webpack@5 :D

issues top:

• lazy modules

• i18n

• source maps

• Compiling RuleSet failed: Properties enforce are unknown (at ruleSet[1].rules[5]: [object Object])

• watch mode doesn't work, this.watcher.close is not a function 34 errors => 22 errors

• web workers

• Dev Server Deploy Url works

• license extraction works

• builder browser support warns when IE9 is present in browserslist

• Builder bundle budgets shows error for large component css when using 'anyComponentStyle' when AOT

• 320 errors Timeout - Async function did not mostly watch mode related

• 90 errors looks like case mismatch, but most like now error is logged in another place Error: .../app.component.less exceeded maximum budget. Budget 1 bytes was not met by 82 bytes with a total of 83 bytes. ' to match 'ERROR.+app.component.less'.

• 8 errors Error: Compiling RuleSet failed: Properties enforce are unknown (at ruleSet[1].rules[5]: [object Object]) (was 72)

• 580 DeprecationWarnings:

  • 229 #18911 [DEP_WEBPACK_COMPILATION_AFTER_OPTIMIZE_CHUNK_ASSETS] DeprecationWarning: afterOptimizeChunkAssets is deprecated (use Compilation.hook.processAssets instead and use one of Compilation.PROCESS_ASSETS_STAGE_* as stage option)
  • 225 #18913 [DEP_WEBPACK_MODULE_ISSUER] DeprecationWarning: Module.issuer: Use new ModuleGraph API
  • 83#18914 [DEP_WEBPACK_COMPILATION_OPTIMIZE_CHUNK_ASSETS] DeprecationWarning: optimizeChunkAssets is deprecated (use Compilation.hook.processAssets instead and use one of Compilation.PROCESS_ASSETS_STAGE_* as stage option)
  • 5[DEP_WEBPACK_COMPILATION_ASSETS] DeprecationWarning: Compilation.assets will be frozen in future, all modifications are deprecated. BREAKING CHANGE: No more changes should happen to Compilation.assets after sealing the Compilation. Do changes to assets earlier, e. g. in Compilation.hooks.processAssets. Make sure to select an appropriate stage from Compilation.PROCESS_ASSETS_STAGE_*.
  • 18#18925 [DEP_WEBPACK_DEPRECATION_ARRAY_TO_SET_PUSH] DeprecationWarning: chunk.files was changed from Array to Set (using Array method 'push' is deprecated)
  • 20#18915 [DEP_WEBPACK_MAIN_TEMPLATE_ASSET_PATH] DeprecationWarning: MainTemplate.hooks.assetPath is deprecated (use Compilation.hooks.assetPath instead)

test log:
cli-test-01.log

merged - webpack-source@2 typings in PR already DefinitelyTyped/DefinitelyTyped#47817

    // TODO_WEBPACK_5
    // the proper typing is available only in tapable, but importing of it leads to
    // Module 'tapable' is not listed as dependency in package.json
    // (_compilation.hooks as unknown as { processAssets: AsyncSeriesHook<[Record<string, Source>]>; })

fix 3rd party licences

Running `ng "build" "--prod" "--extract-licenses" "--output-hashing=none"` [silent]...
CWD: /mnt/ramdisk/test-project
ENV: undefined
Last step took 36.33s...

Error: File dist/test-project/3rdpartylicenses.txt was expected to exist but not found...
    at /home/circleci/ng/tests/legacy-cli/e2e/utils/fs.ts:163:24
    at suppressedCallback (fs.js:215:5)
    at FSReqCallback.oncomplete (fs.js:156:23)


Test "tests/build/extract-licenses" failed...
File dist/test-project/3rdpartylicenses.txt was expected to exist but not found...
Error: File dist/test-project/3rdpartylicenses.txt was expected to exist but not found...
    at /home/circleci/ng/tests/legacy-cli/e2e/utils/fs.ts:163:24
    at suppressedCallback (fs.js:215:5)
    at FSReqCallback.oncomplete (fs.js:156:23)```