fix: ensure WebGL→WASM fallback catches synchronous throws (#86)

Copilot · devlux76 · web-flow · commit 003ccadf9963 · 2026-03-14T03:35:17.000-06:00
* Initial plan

* fix: wrap WebGlVectorBackend.create() in .then() to capture synchronous throws for WASM fallback

Co-authored-by: devlux76 &lt;86517969+devlux76@users.noreply.github.com&gt;

---------

Co-authored-by: copilot-swe-agent[bot] &lt;198982749+Copilot@users.noreply.github.com&gt;
Co-authored-by: devlux76 &lt;86517969+devlux76@users.noreply.github.com&gt;
diff --git a/lib/CreateVectorBackend.ts b/lib/CreateVectorBackend.ts
@@ -15,9 +15,9 @@ export async function createVectorBackend(
     );
   }
   if (kind === "webgl") {
-    return Promise.resolve(WebGlVectorBackend.create()).catch(() =>
-      WasmVectorBackend.create(wasmBytes)
-    );
+    return Promise.resolve()
+      .then(() => WebGlVectorBackend.create())
+      .catch(() => WasmVectorBackend.create(wasmBytes));
   }
   if (kind === "webnn") {
     return WebNnVectorBackend.create(wasmBytes).catch(() =>

Original file line number	Diff line number	Diff line change
`@@ -15,9 +15,9 @@ export async function createVectorBackend(`
`15`	`15`	`);`
`16`	`16`	`}`
`17`	`17`	`if (kind === "webgl") {`
`18`		`- return Promise.resolve(WebGlVectorBackend.create()).catch(() =>`
`19`		`- WasmVectorBackend.create(wasmBytes)`
`20`		`- );`
	`18`	`+ return Promise.resolve()`
	`19`	`+ .then(() => WebGlVectorBackend.create())`
	`20`	`+ .catch(() => WasmVectorBackend.create(wasmBytes));`
`21`	`21`	`}`
`22`	`22`	`if (kind === "webnn") {`
`23`	`23`	`return WebNnVectorBackend.create(wasmBytes).catch(() =>`