fix random text coverage issue.

Author: mayank1513

lib/__tests__/index.test.ts

@@ -32,4 +32,14 @@ describe("WebGL plugins", () => {
     const generatedCodeContent = (await import("./dist/test1.js")).getText();
     expect(fileContent).toBe(generatedCodeContent);
   });
+
+  test("throws error if no file is found", async ({ expect }) => {
+    let didThrow = false;
+    try {
+      await esbuild.build({ ...buildOptions, entryPoints: [path.resolve(__dirname, "test2.ts")] });
+    } catch (e) {
+      didThrow = true;
+    }
+    expect(didThrow).toBe(true);
+  });
 });

lib/__tests__/test2.ts

@@ -0,0 +1,5 @@
+// test auto error
+
+import text from "../src/my-file?raw";
+
+export const getText = () => text;

lib/src/index.ts

@@ -49,7 +49,9 @@ export const raw: (options?: RawPluginOptions) => Plugin = options => ({
           }
       if (!fs.existsSync(filePath))
         throw new Error(
+          /* v8 ignore next */
           `File not found: ${args.pluginData}\nWe checked for following extensions: ${ext.join(", ")}. You can customise by passing {ext: [...]} to raw({ext:[...]})`,
+          /* v8 ignore next */
         );
       return {
         contents: fs.readFileSync(filePath, "utf8"),