Add support to TS v6

.github/workflows/tests.yml

@@ -23,7 +23,7 @@ jobs:
     - uses: actions/setup-node@v6
       with:
         node-version: ${{ matrix.node-version }}
-    - run: npm ci
+    - run: npm ci --legacy-peer-deps
     - run: npm run test-node
 
   test-browsers:
@@ -35,7 +35,7 @@ jobs:
       - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
       - name: Install dependencies
-        run: npm ci
+        run: npm ci --legacy-peer-deps
 
       - name: Install Chrome
         run: npx playwright install --with-deps chromium
@@ -52,9 +52,9 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - uses: actions/setup-node@v6
-    - run: npm ci
+    - run: npm ci --legacy-peer-deps
     - run: npm run test-type-definitions
-    - run: npm i typescript@4.7 @types/node@18.0.0
+    - run: npm i typescript@4.7 @types/node@18.0.0 --legacy-peer-deps
     - run: npm run test-type-definitions-legacy
 
   lint:
@@ -66,5 +66,5 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - uses: actions/setup-node@v6
-    - run: npm ci
+    - run: npm ci --legacy-peer-deps
     - run: npm run lint

lib/types/dom.d.ts

@@ -58,6 +58,9 @@ export namespace DOM {
          */
     getWriter(): WritableStreamDefaultWriter<W>;
   }
+  interface ReadableStreamBYOBReaderReadOptions {
+    min?: number;
+  }
   /**
      * The `ReadableStream` interface of the Streams API represents a readable stream of byte data.
      *
@@ -126,7 +129,12 @@ export namespace DOM {
          *
          * [MDN Reference](https://developer.mozilla.org/docs/Web/API/ReadableStreamBYOBReader/read)
          */
-    read<T extends ArrayBufferView>(view: T): Promise<globalThis.ReadableStreamReadResult<T>>;
+    read<T extends Exclude<BufferSource, ArrayBuffer>>(
+      view: T,
+    // `options` are included in TS v6 definitions but not in v5; to keep the types common
+    // we redeclare `ReadableStreamBYOBReaderReadOptions`
+      options?: ReadableStreamBYOBReaderReadOptions
+    ): Promise<globalThis.ReadableStreamReadResult<T>>;
     /**
          * The **`releaseLock()`** method of the ReadableStreamBYOBReader interface releases the reader's lock on the stream.
          *