Fix TypeScript 5.9.3 Uint8Array type compatibility issues

[Copilot]

TypeScript 5.9.3 has stricter type definitions for Web APIs that accept binary data. While Uint8Array is accepted at runtime by APIs like Request, Blob, and various buffer operations, the TypeScript type definitions don't recognize this compatibility.

Changes

Fixed 4 compilation errors using type assertions and type adjustments:

• native_grpc_client.ts: Cast args.body to BodyInit for the Request constructor
• native_http_client.ts: Changed bodyBuffer type from ArrayBuffer to ArrayBuffer | Uint8Array to accept TextEncoder output
• web_file_downloader.ts: Cast uint8Array to BlobPart for the Blob constructor

These changes use type assertions to inform TypeScript that Uint8Array is compatible with the expected types, preserving the exact data size without using the .buffer property which could include extra uninitialized data.

Files Modified

• packages/dashql-app/src/platform/native_grpc_client.ts
• packages/dashql-app/src/platform/native_http_client.ts
• packages/dashql-app/src/platform/web_file_downloader.ts

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[ankoh]

@copilot please check the actual build errors. I neither want you to add skipLibCheck, nor allowSyntheticDefaultImports, nor esModuleInterop. There are only a handful of typescript errors that need to be fixed with the 5.9 upgrade.

concentrate on those

ERROR in /home/runner/work/dashql/dashql/packages/dashql-app/src/platform/native_grpc_client.ts
./src/platform/native_grpc_client.ts 249:12-16
[tsl] ERROR in /home/runner/work/dashql/dashql/packages/dashql-app/src/platform/native_grpc_client.ts(249,13)
      TS2322: Type 'Uint8Array<ArrayBufferLike>' is not assignable to type 'BodyInit | null | undefined'.
  Type 'Uint8Array<ArrayBufferLike>' is missing the following properties from type 'URLSearchParams': size, append, delete, get, and 2 more.
 @ ./src/platform/native_hyperdb_client.ts 4:0-99 23:35-72 192:26-42
 @ ./src/connection/hyper/hyperdb_client_provider.tsx 3:0-84 12:31-56
 @ ./src/app.tsx 19:0-92 77:64-91

ERROR in /home/runner/work/dashql/dashql/packages/dashql-app/src/platform/native_http_client.ts
./src/platform/native_http_client.ts 192:16-26
[tsl] ERROR in /home/runner/work/dashql/dashql/packages/dashql-app/src/platform/native_http_client.ts(192,17)
      TS2322: Type 'Uint8Array<ArrayBuffer>' is not assignable to type 'ArrayBuffer'.
  Types of property '[Symbol.toStringTag]' are incompatible.
    Type '"Uint8Array"' is not assignable to type '"ArrayBuffer"'.
 @ ./src/platform/http_client_provider.tsx 4:0-59 14:25-41
 @ ./src/app.tsx 16:0-72 75:56-74

ERROR in /home/runner/work/dashql/dashql/packages/dashql-app/src/platform/native_http_client.ts
./src/platform/native_http_client.ts 194:16-26
[tsl] ERROR in /home/runner/work/dashql/dashql/packages/dashql-app/src/platform/native_http_client.ts(194,17)
      TS2322: Type 'Uint8Array<ArrayBuffer>' is not assignable to type 'ArrayBuffer'.
  Types of property '[Symbol.toStringTag]' are incompatible.
    Type '"Uint8Array"' is not assignable to type '"ArrayBuffer"'.
 @ ./src/platform/http_client_provider.tsx 4:0-59 14:25-41
 @ ./src/app.tsx 16:0-72 75:56-74

ERROR in /home/runner/work/dashql/dashql/packages/dashql-app/src/platform/web_file_downloader.ts
./src/platform/web_file_downloader.ts 6:31-41
[tsl] ERROR in /home/runner/work/dashql/dashql/packages/dashql-app/src/platform/web_file_downloader.ts(6,32)
      TS2322: Type 'Uint8Array<ArrayBufferLike>' is not assignable to type 'BlobPart'.
  Type 'Uint8Array<ArrayBufferLike>' is not assignable to type 'ArrayBufferView<ArrayBuffer>'.
    Types of property 'buffer' are incompatible.
      Type 'ArrayBufferLike' is not assignable to type 'ArrayBuffer'.
        Type 'SharedArrayBuffer' is not assignable to type 'ArrayBuffer'.
          Types of property '[Symbol.toStringTag]' are incompatible.
            Type '"SharedArrayBuffer"' is not assignable to type '"ArrayBuffer"'.
 @ ./src/platform/file_downloader_provider.tsx 4:0-61 8:93-110
 @ ./src/app.tsx 13:0-80 69:32-54

ERROR in ./src/platform/native_grpc_client.ts:249:13
TS2322: Type 'Uint8Array<ArrayBufferLike>' is not assignable to type 'BodyInit | null | undefined'.
  Type 'Uint8Array<ArrayBufferLike>' is missing the following properties from type 'URLSearchParams': size, append, delete, get, and 2 more.
    247 |             method: 'POST',
    248 |             headers,
  > 249 |             body: args.body,
        |             ^^^^
    250 |         });
    251 |         const response = await fetch(request);
    252 |         await throwIfError(response);

ERROR in ./src/platform/native_http_client.ts:192:17
TS2322: Type 'Uint8Array<ArrayBuffer>' is not assignable to type 'ArrayBuffer'.
  Types of property '[Symbol.toStringTag]' are incompatible.
    Type '"Uint8Array"' is not assignable to type '"ArrayBuffer"'.
    190 |                 bodyBuffer = init.body;
    191 |             } else if (init.body instanceof URLSearchParams) {
  > 192 |                 bodyBuffer = new TextEncoder().encode(body.toString());
        |                 ^^^^^^^^^^
    193 |             } else if (typeof init.body == "string") {
    194 |                 bodyBuffer = new TextEncoder().encode(body);
    195 |             } else {

ERROR in ./src/platform/native_http_client.ts:194:17
TS2322: Type 'Uint8Array<ArrayBuffer>' is not assignable to type 'ArrayBuffer'.
  Types of property '[Symbol.toStringTag]' are incompatible.
    Type '"Uint8Array"' is not assignable to type '"ArrayBuffer"'.
    192 |                 bodyBuffer = new TextEncoder().encode(body.toString());
    193 |             } else if (typeof init.body == "string") {
  > 194 |                 bodyBuffer = new TextEncoder().encode(body);
        |                 ^^^^^^^^^^
    195 |             } else {
    196 |                 throw Error("fetch body is of unexpected type");
    197 |             }

ERROR in ./src/platform/web_file_downloader.ts:6:32
TS2322: Type 'Uint8Array<ArrayBufferLike>' is not assignable to type 'BlobPart'.
  Type 'Uint8Array<ArrayBufferLike>' is not assignable to type 'ArrayBufferView<ArrayBuffer>'.
    Types of property 'buffer' are incompatible.
      Type 'ArrayBufferLike' is not assignable to type 'ArrayBuffer'.
        Type 'SharedArrayBuffer' is not assignable to type 'ArrayBuffer'.
          Types of property '[Symbol.toStringTag]' are incompatible.
            Type '"SharedArrayBuffer"' is not assignable to type '"ArrayBuffer"'.
    4 |     async downloadBufferAsFile(uint8Array: Uint8Array, filename: string): Promise<void> {
    5 |         // Create a Blob from the Uint8Array
  > 6 |         const blob = new Blob([uint8Array], { type: 'application/octet-stream' });
      |                                ^^^^^^^^^^
    7 |         // Create a temporary URL for the Blob
    8 |         const url = URL.createObjectURL(blob);
    9 |         // Create an anchor element and trigger the download
    ```
  

[Copilot]

@copilot please check the actual build errors. I neither want you to add skipLibCheck, nor allowSyntheticDefaultImports, nor esModuleInterop. There are only a handful of typescript errors that n...

Fixed the 4 TypeScript 5.9.3 errors by using type assertions to tell TypeScript that Uint8Array is compatible with the expected types:

• native_grpc_client.ts: Cast to BodyInit
• native_http_client.ts: Changed type to ArrayBuffer | Uint8Array
• web_file_downloader.ts: Cast to BlobPart

Reverted the tsconfig changes (skipLibCheck, esModuleInterop, allowSyntheticDefaultImports). Commit: e7d87a0