fix(types): restore brotli in CompressionFormat for dom/webworker libs (#34349)

The TypeScript 6.0.3 update (#32944) regenerated `lib.dom.d.ts` and
`lib.webworker.d.ts` from upstream and dropped the brotli patch we had
applied to `CompressionFormat`. Projects whose `compilerOptions.lib`
includes `dom` or `webworker` then fail to type-check
`new CompressionStream("brotli")`, even though Deno supports brotli at
runtime.

Type aliases can't be merged across lib files, so the patch has to live
in the vendored TypeScript libs themselves. To stop this from regressing
silently on the next upgrade, this also adds a small spec test that
runs `deno check` against `CompressionStream("brotli")` /
`DecompressionStream("brotli")` under the default, `dom`, and
`webworker` lib configurations.

Fixes #34324

Author: bartlomieju

cli/tsc/dts/lib.dom.d.ts

@@ -44283,7 +44283,7 @@ type ColorGamut = "p3" | "rec2020" | "srgb";
 type ColorSpaceConversion = "default" | "none";
 type CompositeOperation = "accumulate" | "add" | "replace";
 type CompositeOperationOrAuto = "accumulate" | "add" | "auto" | "replace";
-type CompressionFormat = "deflate" | "deflate-raw" | "gzip";
+type CompressionFormat = "deflate" | "deflate-raw" | "gzip" | "brotli";
 type CookieSameSite = "lax" | "none" | "strict";
 type CredentialMediationRequirement = "conditional" | "optional" | "required" | "silent";
 type DOMParserSupportedType = "application/xhtml+xml" | "application/xml" | "image/svg+xml" | "text/html" | "text/xml";

cli/tsc/dts/lib.webworker.d.ts

@@ -15087,7 +15087,7 @@ type ClientTypes = "all" | "sharedworker" | "window" | "worker";
 type CodecState = "closed" | "configured" | "unconfigured";
 type ColorGamut = "p3" | "rec2020" | "srgb";
 type ColorSpaceConversion = "default" | "none";
-type CompressionFormat = "deflate" | "deflate-raw" | "gzip";
+type CompressionFormat = "deflate" | "deflate-raw" | "gzip" | "brotli";
 type CookieSameSite = "lax" | "none" | "strict";
 type DocumentVisibilityState = "hidden" | "visible";
 type EncodedAudioChunkType = "delta" | "key";

tests/specs/check/compression_stream_brotli/__test__.jsonc

@@ -0,0 +1,17 @@
+{
+  "tempDir": true,
+  "tests": {
+    "default_lib": {
+      "args": "check --quiet default.ts",
+      "output": ""
+    },
+    "dom_lib": {
+      "args": "check --quiet --config dom.json default.ts",
+      "output": ""
+    },
+    "webworker_lib": {
+      "args": "check --quiet --config webworker.json default.ts",
+      "output": ""
+    }
+  }
+}

tests/specs/check/compression_stream_brotli/default.ts

@@ -0,0 +1,5 @@
+// Regression test for https://github.com/denoland/deno/issues/34324
+// Ensure that "brotli" stays in `CompressionFormat` across TypeScript upgrades,
+// in `lib.deno_web.d.ts`, `lib.dom.d.ts`, and `lib.webworker.d.ts`.
+const _compress = new CompressionStream("brotli");
+const _decompress = new DecompressionStream("brotli");

tests/specs/check/compression_stream_brotli/dom.json

@@ -0,0 +1,5 @@
+{
+  "compilerOptions": {
+    "lib": ["esnext", "dom"]
+  }
+}

tests/specs/check/compression_stream_brotli/webworker.json

@@ -0,0 +1,5 @@
+{
+  "compilerOptions": {
+    "lib": ["esnext", "webworker"]
+  }
+}