I have integrated a Service Worker into my Angular application, and it works perfectly when running on localhost. However, when I attempt to deploy the code in a development or different environment, I encounter the following error:
Service worker registration failed: SecurityError: Failed to register a ServiceWorker for scope ('https://a.b.czoo.org/') with script ('https://a.b.czoo.org/sw.js'):
The script resource is behind a redirect, which is disallowed.
Note: The URL mentioned () follows the root domain format, where 'a', 'b', and 'czoo' are placeholders. The actual deployment URL will be like 'https://a.b.czoo.org/AB-123', with AB-123 representing the branch name.
(Providing more context...)
The Service Worker file in my setup is written in TypeScript. During the build process, Webpack converts this file using `ts-loader` and `worker-loader`, placing it in the app's root folder as referenced in `src/app.component.ts`. For example,
app.component.ts
navigator.serviceWorker.register('/sw.js', { scope: '/' }).then(
(): void => {
console.log('Service worker registered');
},
(error): void => {
console.error(`Service worker registration failed: ${error}`);
},
);
This Service Worker file is imported through an `entry` option in the Webpack configuration (as done in the local environment).
webpack.config.js
entry: {
vendor: config.vendor.packages,
boot: './app/index.aot.ts',
sw: './app/**/**/sw.ts',
},
module: {
rules: [
{
test: /\.sw\.ts$/,
use: [
{
// This generates a new sw.js file in the root, which is then referenced in app.component
loader: 'worker-loader',
options: {
filename: "[name].js",
publicPath: "/",
},
},
{
loader: 'ts-loader',
options: {
transpileOnly: true,
happyPackMode: true,
},
},
],
},
]
},
While the build process is successful, attempting to reach the development URL () results in the aforementioned error.
I have reviewed similar issues on Stack Overflow (SO Answer) and GitHub (GitHub Issue), but I was unable to pinpoint the root cause of the problem. I'm uncertain about how to effectively debug this issue.
I would greatly appreciate guidance on debugging this issue or any insights into the potential reasons behind it. Thank you.