Update webpack-manifest-plugin for Webpack 5

[alex996]

Please fill in this template.

• Use a meaningful title for the pull request. Include the name of the package modified.
• Test the change in your own code. (Compile and run.)
• Add or edit tests to reflect the change.
• Follow the advice from the readme.
• Avoid common mistakes.
• Run npm test webpack-manifest-plugin.

Select one of these and delete the others:

If changing an existing definition:

• Provide a URL to documentation or source code which provides context for the suggested changes:
  • https://github.com/webpack/webpack/blob/e855a24ea04ea054b440e595112dfc38ebe162d8/types.d.ts#L1805-L1811
  • https://github.com/webpack/webpack/blob/e855a24ea04ea054b440e595112dfc38ebe162d8/types.d.ts#L9568-L9578
• If this PR brings the type definitions up to date with a new version of the JS library, update the version number in the header.
• If you are making substantial changes, consider adding a tslint.json containing { "extends": "dtslint/dt.json" }. If for reason the any rule need to be disabled, disable it for that line using // tslint:disable-next-line [ruleName] and not for whole package so that the need for disabling can be reviewed.

Description:

• Follow up to Update webpack-manifest-plugin definitions to v3 #50071
• Unfortunately, the old Plugin no longer works in Webpack 5:

Type 'WebpackManifestPlugin' is not assignable to type 'WebpackPluginInstance | ((this: Compiler, compiler: Compiler) => void)'.

• This issue was also raised in [@types/terser-webpack-plugin] Support for webpack 5  #48806 for terser-webpack-plugin. The fix follows the approach taken in copy-webpack-plugin. Tested with webpack v5.10.0
• Also adds the new options from v3.0 to the test file for coverage

[typescript-bot]

@alex996 Thank you for submitting this PR!

This is a live comment which I will keep updated.

1 package in this PR

• webpack-manifest-plugin on npm, on unpkg
  • owner-approval: @monsonjeremy

Code Reviews

Because you edited one package and updated the tests (👏), I can help you merge this PR once someone else signs off on it.

Status

• ✅ No merge conflicts
• ✅ Continuous integration tests have passed
• ✅ Most recent commit is approved by type definition owners or DT maintainers

All of the items on the list are green. To merge, you need to post a comment including the string "Ready to merge" to bring in your changes.

---

Diagnostic Information: What the bot saw about this PR

{
  "type": "info",
  "now": "-",
  "pr_number": 50074,
  "author": "alex996",
  "headCommitAbbrOid": "d6be528",
  "headCommitOid": "d6be5287cf3ba4e94467eb930e704011725fbaa6",
  "lastPushDate": "2020-12-11T00:54:10.000Z",
  "lastActivityDate": "2020-12-11T04:15:48.000Z",
  "maintainerBlessed": false,
  "mergeOfferDate": "2020-12-11T04:14:00.000Z",
  "mergeRequestDate": "2020-12-11T04:15:48.000Z",
  "mergeRequestUser": "alex996",
  "hasMergeConflict": false,
  "isFirstContribution": false,
  "popularityLevel": "Popular",
  "pkgInfo": [
    {
      "name": "webpack-manifest-plugin",
      "kind": "edit",
      "files": [
        {
          "path": "types/webpack-manifest-plugin/index.d.ts",
          "kind": "definition"
        },
        {
          "path": "types/webpack-manifest-plugin/webpack-manifest-plugin-tests.ts",
          "kind": "test"
        }
      ],
      "owners": [
        "r3nya",
        "monsonjeremy"
      ],
      "addedOwners": [],
      "deletedOwners": [],
      "popularityLevel": "Popular"
    }
  ],
  "reviews": [
    {
      "type": "approved",
      "reviewer": "monsonjeremy",
      "date": "2020-12-11T02:29:40.000Z",
      "isMaintainer": false
    }
  ],
  "ciResult": "pass"
}

[typescript-bot]

🔔 @r3nya @monsonjeremy — please review this PR in the next few days. Be sure to explicitly select Approve or Request Changes in the GitHub UI so I know what's going on.

[typescript-bot]

👋 Hi there! I’ve run some quick measurements against master and your PR. These metrics should help the humans reviewing this PR gauge whether it might negatively affect compile times or editor responsiveness for users who install these typings.

Let’s review the numbers, shall we?

Comparison details 📊

	master	#50074	diff
Batch compilation
Memory usage (MiB)	75.3	75.4	0.0%
Type count	11090	11084	0%
Assignability cache size	1960	1959	0%
Language service
Samples taken	67	70	+4%
Identifiers in tests	67	70	+4%
getCompletionsAtPosition
Mean duration (ms)	352.1	350.9	-0.3%
Mean CV	10.8%	10.6%
Worst duration (ms)	409.9	417.1	+1.8%
Worst identifier	reduce	b
getQuickInfoAtPosition
Mean duration (ms)	360.4	358.0	-0.7%
Mean CV	12.4%	10.9%
Worst duration (ms)	440.4	438.3	-0.5%
Worst identifier	files	localeCompare

It looks like nothing changed too much. I won’t post performance data again unless it gets worse.

[typescript-bot]

@alex996 Everything looks good here. Great job! I am ready to merge this PR (at d6be528) on your behalf.

If you'd like that to happen, please post a comment saying:

Ready to merge

and I'll merge this PR almost instantly. Thanks for helping out! ❤️

(@r3nya, @monsonjeremy: you can do this too.)

[alex996]

Ready to merge

[typescript-bot]

I just published @types/webpack-manifest-plugin@3.0.1 to npm.