fix(workbox-build): make source map filename consistent with injected source file

packages/workbox-build/src/inject-manifest.ts

@@ -129,7 +129,10 @@ export async function injectManifest(
       searchString: options.injectionPoint!,
     });
 
-    filesToWrite[options.swDest] = source;
+    filesToWrite[options.swDest] = source.replace(
+      url!,
+      encodeURI(upath.basename(destPath)),
+    );
     filesToWrite[destPath] = map;
   } else {
     // If there's no sourcemap associated with swSrc, a simple string

packages/workbox-build/src/lib/translate-url-to-sourcemap-paths.ts

@@ -28,7 +28,7 @@ export function translateURLToSourcemapPaths(
     const possibleSrcPath = upath.resolve(upath.dirname(swSrc), url);
     if (fse.existsSync(possibleSrcPath)) {
       srcPath = possibleSrcPath;
-      destPath = upath.resolve(upath.dirname(swDest), url);
+      destPath = `${swDest}.map`;
     } else {
       warning = `${errors['cant-find-sourcemap']} ${possibleSrcPath}`;
     }

test/workbox-build/node/inject-manifest.js

@@ -13,6 +13,9 @@ const upath = require('upath');
 const tempy = require('tempy');
 
 const {errors} = require('../../../packages/workbox-build/build/lib/errors');
+const {
+  getSourceMapURL,
+} = require('../../../packages/workbox-build/build/lib/get-source-map-url');
 const {
   injectManifest,
 } = require('../../../packages/workbox-build/build/inject-manifest');
@@ -436,11 +439,8 @@ describe(`[workbox-build] inject-manifest.js (End to End)`, function () {
     it(`should update the sourcemap to account for manifest injection`, async function () {
       const outputDir = tempy.directory();
       const swSrc = upath.join(SW_SRC_DIR, 'basic-with-sourcemap.js.nolint');
-      const swDest = upath.join(outputDir, 'basic-with-sourcemap.js');
-      const sourcemapDest = upath.join(
-        outputDir,
-        'basic-with-sourcemap.js.map',
-      );
+      const swDest = upath.join(outputDir, 'sw.js');
+      const sourcemapDest = `${swDest}.map`;
       const options = Object.assign({}, BASE_OPTIONS, {
         swDest,
         swSrc,
@@ -459,6 +459,9 @@ describe(`[workbox-build] inject-manifest.js (End to End)`, function () {
       );
       expect(actualSourcemap).to.eql(expectedSourcemap);
 
+      const actualMapURL = getSourceMapURL(await fse.readFile(swDest, 'utf-8'));
+      expect(actualMapURL).to.eql(upath.basename(sourcemapDest));
+
       // We can't validate the SW file contents.
     });
 

test/workbox-build/node/lib/translate-url-to-sourcemap-paths.js

@@ -16,7 +16,7 @@ describe(`[workbox-build] lib/translate-url-to-sourcemap-paths.ts`, function ()
     '../../../../packages/workbox-build/build/lib/translate-url-to-sourcemap-paths';
   const URL = 'sw.js.map';
   const SWSRC = 'src/sw.js';
-  const SWDEST = 'dist/sw.js';
+  const SWDEST = 'dist/service-worker.js';
 
   it(`should return undefined paths when url is undefined`, function () {
     const {translateURLToSourcemapPaths} = require(MODULE_PATH);
@@ -80,7 +80,7 @@ describe(`[workbox-build] lib/translate-url-to-sourcemap-paths.ts`, function ()
       SWDEST,
     );
 
-    expect(destPath).to.eql('dist/sw.js.map');
+    expect(destPath).to.eql('dist/service-worker.js.map');
     expect(srcPath).to.eq('src/sw.js.map');
     expect(warning).to.be.undefined;
   });