fix: show better error for parse errors

unjs · Jan 16, 2024 · 3273a03 · 3273a03
1 parent 4d396b2
commit 3273a03
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Showing 2 changed files with 16 additions and 3 deletions.
diff --git a/src/plugin/index.ts b/src/plugin/index.ts
@@ -25,7 +25,7 @@ const unplugin = createUnplugin<UnwasmPluginOptions>((opts) => {
     if (_parseCache[name]) {
       return _parseCache[name];
     }
-    const parsed = parseWasm(source);
+    const parsed = parseWasm(source, { name });
     const imports: Record<string, string[]> = Object.create(null);
     const exports: string[] = [];
     for (const mod of parsed.modules) {

diff --git a/src/tools/parser.ts b/src/tools/parser.ts
@@ -24,8 +24,21 @@ export type ParseResult = {
   modules: ParsedWasmModule[];
 };
 
-export function parseWasm(source: Buffer | ArrayBuffer): ParseResult {
-  const ast = _parseWasm(source) as any;
+export function parseWasm(
+  source: Buffer | ArrayBuffer,
+  opts: { name?: string } = {},
+): ParseResult {
+  let ast: any;
+  try {
+    ast = _parseWasm(source);
+  } catch (error) {
+    throw new Error(
+      `[unwasm] Failed to parse ${opts.name || "wasm module"}: ${error}`,
+      {
+        cause: error,
+      },
+    );
+  }
 
   const modules = [];