fix: vite failing in dev when source map is empty string (#39)

* fix: `deno.lock` integrity error not being shown

* fix: vite failing in dev when source map is empty string

src/resolvePlugin.ts

@@ -43,9 +43,15 @@ export default function denoPlugin(
         logLevel: "debug",
       });
 
+      // Issue: https://github.com/denoland/deno-vite-plugin/issues/38
+      // Esbuild uses an empty string as empty value and vite expects
+      // `null` to be the empty value. This seems to be only the case in
+      // `dev` mode
+      const map = result.map === "" ? null : result.map;
+
       return {
         code: result.code,
-        map: result.map,
+        map,
       };
     },
   };

src/resolver.ts

@@ -84,10 +84,15 @@ export async function resolveDeno(
   // There is no JS-API in Deno to get the final file path in Deno's
   // cache directory. The `deno info` command reveals that information
   // though, so we can use that.
-  const output = await new Promise<string | null>((resolve) => {
+  const output = await new Promise<string | null>((resolve, reject) => {
     execFile(DENO_BINARY, ["info", "--json", id], { cwd }, (error, stdout) => {
-      if (error) resolve(null);
-      else resolve(stdout);
+      if (error) {
+        if (String(error).includes("Integrity check failed")) {
+          reject(error);
+        } else {
+          resolve(null);
+        }
+      } else resolve(stdout);
     });
   });