Add progressive web app companion for cross-platform access

Vite + TypeScript PWA that mirrors the Android app's core features:
- Pre-processed shelter data (build-time UTM33N→WGS84 conversion)
- Leaflet map with shelter markers, user location, and offline tiles
- Canvas compass arrow (ported from DirectionArrowView.kt)
- IndexedDB shelter cache with 7-day staleness check
- Service worker with CacheFirst tiles and precached app shell
- i18n for en, nb, nn (ported from Android strings.xml)
- iOS/Android compass handling with low-pass filter
- Respects user map interaction (no auto-snap on pan/zoom)
- Build revision cache-breaker for reliable SW updates

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/amd-function-name.test.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("AMD Function Name", function() {
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("loads with a different AMD function name", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = "/base/tests/fixtures/amd-function-name/build/runner.html";
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/asset-in-worker.test.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("Assets in workers", function() {
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("can be fetched", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "assetcontent") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = "/base/tests/fixtures/assets-in-worker/build/runner.html";
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/dynamic-import.test.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("Dynamic import", function() {
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("loads transpiled modules", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = "/base/tests/fixtures/dynamic-import/build/runner.html";
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/amd-function-name/a.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  return 4;
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/amd-function-name/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/amd-function-name/config.json

@@ -0,0 +1,3 @@
+{
+  "amdFunctionName": "foo"
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/amd-function-name/entry.js

@@ -0,0 +1,22 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import("./a.js").then(m => {
+  if (m.default() != 4) {
+    return;
+  }
+  if (!self.foo) {
+    return;
+  }
+  window.parent.postMessage("a", "*");
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/assets-in-worker/build/assets/my-asset-620b911b.bin

@@ -0,0 +1 @@
+assetcontent

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/assets-in-worker/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/assets-in-worker/entry.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const w = new Worker("./worker.js");
+w.addEventListener("message", ev => {
+  window.parent.postMessage(ev.data, "*");
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/assets-in-worker/rollup.config.js

@@ -0,0 +1,25 @@
+const MARKER = "my-special-import";
+module.exports = (config, outputOptions, omt) => {
+  config.plugins = [
+    omt(),
+    {
+      resolveId(id) {
+        if (id !== MARKER) {
+          return;
+        }
+        return id;
+      },
+      load(id) {
+        if (id !== MARKER) {
+          return;
+        }
+        const referenceId = this.emitFile({
+          type: "asset",
+          name: "my-asset.bin",
+          source: "assetcontent"
+        });
+        return `export default import.meta.ROLLUP_FILE_URL_${referenceId}`;
+      }
+    }
+  ];
+};

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/assets-in-worker/worker.js

@@ -0,0 +1,18 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import url from "my-special-import";
+
+fetch(url)
+  .then(resp => resp.text())
+  .then(text => postMessage(text));

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/dynamic-import/a.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  window.parent.postMessage("a", "*");
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/dynamic-import/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/dynamic-import/entry.js

@@ -0,0 +1,14 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import("./a.js").then(m => m.default());

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-meta-worker/a.js

@@ -0,0 +1,12 @@
+let worker;
+
+if (self.document) {
+  worker = new Worker(import.meta.url);
+}
+if (self.postMessage) {
+  setTimeout(() => {
+    postMessage("a");
+  }, 500);
+}
+
+export { worker };

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-meta-worker/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2020 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-meta-worker/entry.js

@@ -0,0 +1,22 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { worker } from "./a.js";
+if (worker) {
+  worker.addEventListener("message", ev => {
+    window.parent.postMessage(ev.data, "*");
+  });
+}
+// This should not get bundled into the worker module
+if (self.postMessage) {
+  postMessage("xxx");
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-meta/a.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  window.parent.postMessage(import.meta.url, "*");
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-meta/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-meta/entry.js

@@ -0,0 +1,14 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import("./a.js").then(m => m.default());

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url-custom-scheme/a.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  self.postMessage("a");
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url-custom-scheme/b.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  return 1;
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url-custom-scheme/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2020 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url-custom-scheme/config.json

@@ -0,0 +1,3 @@
+{
+  "urlLoaderScheme": "fancy-custom-scheme"
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url-custom-scheme/entry.js

@@ -0,0 +1,21 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import workerURL from "fancy-custom-scheme:./worker.js";
+
+// Set this, so it can be picked up in the test.
+self.workerURL = workerURL;
+
+const w = new Worker(workerURL);
+w.addEventListener("message", ev => {
+  window.parent.postMessage(ev.data, "*");
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url-custom-scheme/worker.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import a from "./a.js";
+
+a();
+import("./b.js");

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url/a.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  self.postMessage("a");
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url/b.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  return 1;
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2020 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url/entry.js

@@ -0,0 +1,21 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import workerURL from "omt:./worker.js";
+
+// Set this, so it can be picked up in the test.
+self.workerURL = workerURL;
+
+const w = new Worker(workerURL);
+w.addEventListener("message", ev => {
+  window.parent.postMessage(ev.data, "*");
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/import-worker-url/worker.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import a from "./a.js";
+
+a();
+import("./b.js");

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/module-worker/a.js

@@ -0,0 +1,20 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default async function(f) {
+  self.postMessage(f());
+}
+
+export function someValue() {
+  return self.String("a");
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/module-worker/b.js

@@ -0,0 +1,20 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Import for side-effects (of which there are none)
+// to make sure that a.js gets its own chunk.
+import {someValue} from "./a.js";
+
+export default function() {
+  return someValue();
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/module-worker/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js" type="module"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/module-worker/entry.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const w = new Worker("./worker.js", { type: "module" });
+w.addEventListener("message", ev => {
+  window.parent.postMessage(ev.data, "*");
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/module-worker/rollup.config.js

@@ -0,0 +1,4 @@
+module.exports = (config, outputOptions, omt) => {
+  outputOptions.format = "esm";
+  config.plugins = [omt()];
+};

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/module-worker/worker.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import a from "./a.js";
+import("./b.js").then(({default: f}) => {
+  a(f);
+})

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/more-workers/a.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  self.postMessage("a");
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/more-workers/b.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  self.postMessage("b");
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/more-workers/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/more-workers/entry.js

@@ -0,0 +1,34 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+async function run() {
+  await new Promise(resolve => {
+    const w = new Worker("./worker_a.js");
+    w.addEventListener("message", ev => {
+      if (ev.data === "a") {
+        resolve();
+      }
+    });
+  });
+  await new Promise(resolve => {
+    const w = new Worker("./worker_b.js");
+    w.addEventListener("message", ev => {
+      if (ev.data === "b") {
+        resolve();
+      }
+    });
+  });
+  window.parent.postMessage("a", "*");
+}
+
+run();

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/more-workers/worker_a.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import a from "./a.js";
+
+a();

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/more-workers/worker_b.js

@@ -0,0 +1,18 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+async function run() {
+  const { default: b } = await import("./b.js");
+  b();
+}
+run();

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/public-path/a.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  window.parent.postMessage("a", "*");
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/public-path/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/public-path/config.json

@@ -0,0 +1,3 @@
+{
+  "publicPath": "/base/tests/fixtures/public-path/build"
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/public-path/entry.js

@@ -0,0 +1,14 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import("./a.js").then(m => m.default());

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/simple-bundle/a.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  window.parent.postMessage("a", "*");
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/simple-bundle/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/simple-bundle/entry.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import A from "./a.js";
+
+A();

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/single-default/a.js

@@ -0,0 +1,14 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default 4;

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/single-default/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/single-default/entry.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import A from "./a.js";
+
+window.parent.postMessage(A, "*");

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/url-import-meta-worker/a.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default async function() {
+  const { default: f } = await import("./b.js");
+  self.postMessage(f());
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/url-import-meta-worker/b.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  return "a";
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/url-import-meta-worker/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/url-import-meta-worker/entry.js

@@ -0,0 +1,20 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// The type module should get removed for AMD format!
+const w = new Worker(new URL("worker.js", import.meta.url), {
+  type: "module"
+});
+w.addEventListener("message", ev => {
+  window.parent.postMessage(ev.data, "*");
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/url-import-meta-worker/worker.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import a from "./a.js";
+
+a();

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/worker/a.js

@@ -0,0 +1,17 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default async function() {
+  const { default: f } = await import("./b.js");
+  self.postMessage(f());
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/worker/b.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export default function() {
+  return "a";
+}

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/worker/build/runner.html

@@ -0,0 +1,15 @@
+<!--
+Copyright 2018 Google Inc. All Rights Reserved.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+<!doctype html>
+<script src="entry.js"></script>

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/worker/entry.js

@@ -0,0 +1,18 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// The type module should get removed for AMD format!
+const w = new Worker("./worker.js", { type: "module" });
+w.addEventListener("message", ev => {
+  window.parent.postMessage(ev.data, "*");
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/fixtures/worker/worker.js

@@ -0,0 +1,16 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import a from "./a.js";
+
+a();

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/import-meta-worker.test.js

@@ -0,0 +1,37 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("omt: use import.meta.url in Worker constructor", function() {
+  const runner = "/base/tests/fixtures/import-meta-worker/build/runner.html";
+
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("loads itself as a module", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      } else {
+        done(`Unexpected message! ${ev.data}`);
+      }
+    });
+    this.ifr.src = runner;
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/import-meta.test.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("import.meta", function() {
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("loads transpiled modules", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (/^https?:\/\/.+\.js$/.test(ev.data)) {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = "/base/tests/fixtures/import-meta/build/runner.html";
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/import-worker-url-custom-scheme.test.js

@@ -0,0 +1,42 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("omt: URL import with custom scheme", function() {
+  const runner =
+    "/base/tests/fixtures/import-worker-url-custom-scheme/build/runner.html";
+
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("imports as string", async function() {
+    this.ifr.src = runner;
+    await new Promise(resolve => this.ifr.addEventListener("load", resolve));
+    assert.typeOf(this.ifr.contentWindow.workerURL, "string");
+  });
+
+  it("loads transpiled modules", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = runner;
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/import-worker-url.test.js

@@ -0,0 +1,41 @@
+/**
+ * Copyright 2020 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("omt: URL import", function() {
+  const runner = "/base/tests/fixtures/import-worker-url/build/runner.html";
+
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("imports as string", async function() {
+    this.ifr.src = runner;
+    await new Promise(resolve => this.ifr.addEventListener("load", resolve));
+    assert.typeOf(this.ifr.contentWindow.workerURL, "string");
+  });
+
+  it("loads transpiled modules", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = runner;
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/module-worker.test.js

@@ -0,0 +1,47 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("Module Worker", function() {
+  const blob = new Blob([""], { type: "text/javascript" });
+  const url = URL.createObjectURL(blob);
+  let supportsModuleWorker = false;
+  const options = {
+    get type() {
+      supportsModuleWorker = true;
+    }
+  };
+  new Worker(url, options).terminate();
+  URL.revokeObjectURL(url);
+
+  beforeEach(function() {
+    if (!supportsModuleWorker) {
+      return this.skip();
+    }
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("work", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = "/base/tests/fixtures/module-worker/build/runner.html";
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/more-workers.test.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("Worker", function() {
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("can load multiple workers", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = "/base/tests/fixtures/more-workers/build/runner.html";
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/public-path.test.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("Public Path", function() {
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("loads transpiled modules", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = "/base/tests/fixtures/public-path/build/runner.html";
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/simple-bundle.test.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("Simple bundle", function() {
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("loads transpiled modules", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = "/base/tests/fixtures/simple-bundle/build/runner.html";
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/single-default.test.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("Single default const export", function() {
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("loads transpiled modules", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === 4) {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = "/base/tests/fixtures/single-default/build/runner.html";
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/url-import-meta-worker.test.js

@@ -0,0 +1,34 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("Worker", function() {
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("loads module-relative worker paths", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src =
+      "/base/tests/fixtures/url-import-meta-worker/build/runner.html";
+  });
+});

pwa/node_modules/@surma/rollup-plugin-off-main-thread/tests/worker.test.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+describe("Worker", function() {
+  beforeEach(function() {
+    this.ifr = document.createElement("iframe");
+    document.body.append(this.ifr);
+  });
+
+  afterEach(function() {
+    this.ifr.remove();
+  });
+
+  it("loads transpiled modules", function(done) {
+    window.addEventListener("message", function l(ev) {
+      if (ev.data === "a") {
+        window.removeEventListener("message", l);
+        done();
+      }
+    });
+    this.ifr.src = "/base/tests/fixtures/worker/build/runner.html";
+  });
+});