feat(minifier): drop catch-shadowed functions, pure extra constructor arguments and nullish let calls - #22789

- an optional call folds on a value `fixedValue` gives only where the
  name is never written again (#22789)
- a `case` label reading a `let` its own case declares keeps the switch,
  which throws in its dead zone (#22754)
- improved cases snapshot their output instead of comparing a string
  (#22829), and the property-write test logs and snapshots what it
  writes (#22814)

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

- an optional call folds on a value `fixedValue` gives only where the
  name is never written again (#22789)
- a `case` label reading a `let` its own case declares keeps the switch,
  which throws in its dead zone (#22754)
- improved cases snapshot their output instead of comparing a string
  (#22829), and the property-write test logs and snapshots what it
  writes (#22814)

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

* fix(minify): preserve observable string conversions

* fix(minify): keep pattern targets and patched array iteration; split the minify CI leg

- `[[1][0]] = a` keeps its target: the flattened `[1] = a` does not parse
  (CodeRabbit on #22839)
- a `new Set` or a built-in given an array literal stays where the program
  patches `Array.prototype`, whose iterator may run code (CodeRabbit on
  #22837)
- the corpora and the fuzzer run as two CI legs, the corpora bounded at
  90 min: together they took 37 of the 60 min on a fast runner and passed
  the limit on a slower one

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

* fix(minify): address the open CodeRabbit findings on the minify PRs

- an optional call folds on a value `fixedValue` gives only where the
  name is never written again (#22789)
- a `case` label reading a `let` its own case declares keeps the switch,
  which throws in its dead zone (#22754)
- improved cases snapshot their output instead of comparing a string
  (#22829), and the property-write test logs and snapshots what it
  writes (#22814)

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

* fix(minify): keep what a patched Array.prototype runs, and conversions not pure

- a spread array literal stays, kept for its effects, and an array
  literal is no constant to a built-in, a `+` or a template, where the
  program patches `Array.prototype`
- `"a" + x` read for its truthiness keeps `x`'s conversion unless
  `pure_conversions`
- the parser job's checkout keeps no credentials, and the changeset fits
  80 characters

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

* fix(minify): keep a dot access a pattern writes from folding

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

* fix(minify): keep a spread that must run inside an array literal

Dropped alone, `...[1]` printed as a statement does not parse.

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

* fix(minify): keep array method calls and `new` spreads a patched `Array.prototype` changes

Also record `Array["prototype"]` writes as patches.

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

* fix(minify): keep calls to a built-in static the program writes

`Math.max = f` or `Object.defineProperty(Math, ...)` before `Math.max(1)`
no longer folds or drops the call.

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

* test(minify): observe the inherited `arguments[1]` getter

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

* test(minify): check inherited holes in the printer's unit tests

An indexed property on `Array.prototype` or `Object.prototype`, even once
deleted, turns off V8's no-elements fast path for the whole process, which
slowed every later config case past its timeout (`require/cjs-and-mjs`).

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

* test(minify): update the snapshot main's fixed rules fold

Claude-Session: https://claude.ai/code/session_01ViD41i2KdwwGxrDk7yrjeD

---------

Co-authored-by: alexander-akait <4567934+alexander-akait@users.noreply.github.com>

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [webpack](https://github.com/webpack/webpack) | [`5.112.0` → `5.112.2`](https://renovatebot.com/diffs/npm/webpack/5.112.0/5.112.2) | ![age](https://developer.mend.io/api/mc/badges/age/npm/webpack/5.112.2?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/webpack/5.112.0/5.112.2?slim=true) |

---

> ⚠️ **Warning**
>
> Some dependencies could not be looked up. Check the [Dependency Dashboard](issues/99) for more information.

---

### Release Notes

<details>
<summary>webpack/webpack (webpack)</summary>

### [`v5.112.2`](https://github.com/webpack/webpack/blob/HEAD/CHANGELOG.md#51122)

[Compare Source](webpack/webpack@v5.112.1...v5.112.2)

##### Patch Changes

- Reduce repeated scans when concatenating imported modules. (by [@&#8203;xiaoxiaojx](https://github.com/xiaoxiaojx) in [#&#8203;22865](webpack/webpack#22865))

- Avoid allocating CSS module sets for single-group chunks. (by [@&#8203;xiaoxiaojx](https://github.com/xiaoxiaojx) in [#&#8203;22866](webpack/webpack#22866))

- Return the value of every module type loaded with `importModule()`. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22869](webpack/webpack#22869))

### [`v5.112.1`](https://github.com/webpack/webpack/blob/HEAD/CHANGELOG.md#51121)

[Compare Source](webpack/webpack@v5.112.0...v5.112.1)

##### Patch Changes

- Rebuild a lazy barrel in watch when what it defers changes, and keep the imports and re-exports it still runs. (by [@&#8203;aryanraj45](https://github.com/aryanraj45) in [#&#8203;22699](webpack/webpack#22699))

- Rebuild under `cacheUnaffected` a module whose re-export target goes or returns. (by [@&#8203;aryanraj45](https://github.com/aryanraj45) in [#&#8203;22749](webpack/webpack#22749))

- Fix "Self-reference dependency has unused export name" for CommonJS namespace re-exports. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22791](webpack/webpack#22791))

- Fix `exportType: "style"` CSS modules throwing outside the runtime chunk. (by [@&#8203;lazerg](https://github.com/lazerg) in [#&#8203;22833](webpack/webpack#22833))

- Fix crash when a CSS module with `exportType: "style"` imports an ignored stylesheet. (by [@&#8203;codeXsidd](https://github.com/codeXsidd) in [#&#8203;22846](webpack/webpack#22846))

- Keep empty process environment variables that `.env` files don't define in `DotenvPlugin`. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22794](webpack/webpack#22794))

- Rehash an ESM entry chunk when a chunk it imports by file name changes. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22804](webpack/webpack#22804))

- Handle a NUL inside an HTML CDATA section the way the parsing spec does. (by [@&#8203;dependabot](https://github.com/apps/dependabot) in [#&#8203;22811](webpack/webpack#22811))

- Keep module exports live across chunks, runtimes, HMR and eval, sparing globals. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22733](webpack/webpack#22733))

- Await asynchronous modules that `ProvidePlugin` injects into ES modules. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22728](webpack/webpack#22728))

- Keep a resolve that ends after the compiler closed from throwing. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22795](webpack/webpack#22795))

- Preserve string names passed to SharedWorker constructors. (by [@&#8203;bjohansebas](https://github.com/bjohansebas) in [#&#8203;22770](webpack/webpack#22770))

- Preserve string contents when extracting source map comments. (by [@&#8203;bjohansebas](https://github.com/bjohansebas) in [#&#8203;22768](webpack/webpack#22768))

- Scope strict-mode, async and generator block function declarations to their block. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22800](webpack/webpack#22800))

- Preserve raw dotenv values when reusing cached environment files. (by [@&#8203;Eshiv-Pandey](https://github.com/Eshiv-Pandey) in [#&#8203;22787](webpack/webpack#22787))

- Preserve assigned or patched built-ins, conversions and pattern targets. (by [@&#8203;aryanraj45](https://github.com/aryanraj45) in [#&#8203;22761](webpack/webpack#22761))

- Keep globals a `globalThis` write replaces, and `slice` on a patched array. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22862](webpack/webpack#22862))

- Skip HTML script tags for shared chunks that emit no JavaScript. (by [@&#8203;bjohansebas](https://github.com/bjohansebas) in [#&#8203;22779](webpack/webpack#22779))

- Keep the digits Firefox lays out a minified CSS percentage with. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22718](webpack/webpack#22718))

- Reject a second `srcset` descriptor after a `0x` density descriptor. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22741](webpack/webpack#22741))

- Minify JavaScript faster, folding string methods on constants and `x -= 1`. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22823](webpack/webpack#22823))

- Shorten minified JavaScript, and keep it running like its source. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22717](webpack/webpack#22717))

- Drop more unused functions, arguments, calls, global reads and variable copies when minifying JavaScript. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22789](webpack/webpack#22789))

- Minify JavaScript smaller where swc does, and fold a function's `length` right. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22826](webpack/webpack#22826))

- Reduce JavaScript output size where oxc or swc produce smaller output. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22829](webpack/webpack#22829))

- Update watchpack to 2.6.3 and rebuild on a `node_modules` created mid-build. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22743](webpack/webpack#22743))

- Support `concatenateModules` with `cacheUnaffected`. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22746](webpack/webpack#22746))

- Update schema-utils to 4.8.1. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22774](webpack/webpack#22774))

- Keep CSS fallbacks, vendor overrides, `oklch()` hues and HTML elements. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22753](webpack/webpack#22753))

- Validate `CleanPlugin` and `DotenvPlugin` options with a precompiled check, so valid options no longer compile their schema at startup. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22758](webpack/webpack#22758))

- Speed up startup and CSS minification, sharing the compile cache with workers. (by [@&#8203;xiaoxiaojx](https://github.com/xiaoxiaojx) in [#&#8203;22706](webpack/webpack#22706))

- Use precise, generic types for modules, parsers, generators, stats and loaders. (by [@&#8203;alexander-akait](https://github.com/alexander-akait) in [#&#8203;22731](webpack/webpack#22731))

</details>

---

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Reviewed-on: https://code.futo.org/harbor/harbor/pulls/2035