core(build): inline-fs error if file missing, ignorePaths (#14436)

build/build-bundle.js

@@ -192,7 +192,12 @@ async function buildBundle(entryPath, distPath, opts = {minify: true}) {
       }),
       rollupPlugins.json(),
       rollupPlugins.removeModuleDirCalls(),
-      rollupPlugins.inlineFs({verbose: false}),
+      rollupPlugins.inlineFs({
+        verbose: Boolean(process.env.DEBUG),
+        ignorePaths: [
+          require.resolve('puppeteer-core/lib/esm/puppeteer/common/Page.js'),
+        ],
+      }),
       rollupPlugins.commonjs({
         // https://github.com/rollup/plugins/issues/922
         ignoreGlobal: true,

build/build-extension.js

@@ -40,7 +40,7 @@ async function buildEntryPoint() {
         '___BROWSER_BRAND___': browserBrand,
       }),
       rollupPlugins.nodeResolve(),
-      rollupPlugins.inlineFs({verbose: false}),
+      rollupPlugins.inlineFs({verbose: Boolean(process.env.DEBUG)}),
       rollupPlugins.terser(),
     ],
   });

build/plugins/inline-fs.js

@@ -98,6 +98,11 @@ async function inlineFs(code, filepath) {
             parsed.callee.property);
       }
     } catch (err) {
+      // Consider missing files to be a fatal error.
+      if (err.code === 'ENOENT') {
+        throw err;
+      }
+
       // Use the specific node with the error if available; fallback to fs.method location.
       const offsets = getNodeOffsets(err.node || parsed);
       const location = acorn.getLineInfo(code, offsets.start);

build/plugins/rollup-plugin-inline-fs.js

@@ -14,6 +14,7 @@ import {LH_ROOT} from '../../root.js';
 /**
  * @typedef Options
  * @property {boolean} [verbose] If true, turns on verbose logging, e.g. log instances where fs methods could not be inlined.
+ * @property {string[]} [ignorePaths] Absoulte paths of files to not process for inlining.
  */
 
 /**
@@ -29,9 +30,13 @@ function rollupInlineFs(options = {}) {
     /**
      * @param {string} originalCode
      * @param {string} filepath
-     * @return {Promise<string|null>}
+     * @return {Promise<import('rollup').TransformResult>}
      */
     async transform(originalCode, filepath) {
+      if (options.ignorePaths?.includes(filepath)) {
+        return;
+      }
+
       // TODO(bckenny): add source maps, watch files.
       const {code, warnings} = await inlineFs(originalCode, filepath);
 

build/test/plugins/inline-fs-test.js

@@ -265,6 +265,11 @@ describe('inline-fs', () => {
         });
       });
 
+      it('throws fatal error if file is missing', async () => {
+        const content = `const myTextContent = fs.readFileSync('i-never-exist.lol', 'utf8');`;
+        await expect(inlineFs(content, filepath)).rejects.toThrow('ENOENT');
+      });
+
       it('inlines multiple fs.readFileSync calls', async () => {
         fs.writeFileSync(tmpPath, 'some text content');
         // eslint-disable-next-line max-len