Merge pull request #1939 from embroider-build/align-package-json-babel-filter

Output `_babel_filter_.js` in the `.embroider` folder

Author: mansona

packages/compat/src/compat-app-builder.ts

@@ -570,7 +570,7 @@ export class CompatAppBuilder {
       'utf8'
     );
     writeFileSync(
-      join(this.root, '_babel_filter_.js'),
+      join(locateEmbroiderWorkingDir(this.compatApp.root), '_babel_filter_.js'),
       babelFilterTemplate({ skipBabel: this.options.skipBabel, appRoot: this.origAppPackage.root }),
       'utf8'
     );

test-packages/support/transpiler.ts

@@ -34,7 +34,11 @@ export class Transpiler {
   }
 
   shouldTranspile(relativePath: string) {
-    let shouldTranspile = require(join(this.appOutputPath, '_babel_filter_'));
+    // Depending on how the app builds, the babel filter is not at the same location
+    let embroiderLocation = join(locateEmbroiderWorkingDir(this.appDir), '_babel_filter_.js');
+    let shouldTranspile = existsSync(embroiderLocation)
+      ? require(embroiderLocation)
+      : require(join(this.appOutputPath, '_babel_filter_'));
     return shouldTranspile(join(this.appDir, getRewrittenLocation(this.appDir, relativePath))) as boolean;
   }