How to run service worker locally with Angular

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小蘑菇
小蘑菇 2021-01-12 15:16

I am following angular\'s best practice in order to make PWA. After making production build (ng build --prod --aot), I am also running the service worker from

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  • 2021-01-12 15:33

    You can't serve your Angular project with service worker via ng serve, as the documentation for Service Workers state that it requires https. The only way to run it without https/on a server, is to use ng build and run the http-server locally to test your project.

    Because ng serve does not work with service workers, you must use a separate HTTP server to test your project locally.

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  • 2021-01-12 15:39

    If you want to use other browsers that don't support TimKVU answer then the solution is to use ngrok (https://ngrok.com)

    It sets up a secure tunnel to whatever server you are using. You run it with:

    ngrok http 4200

    Simply connect to the domain shown on screen.

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  • 2021-01-12 15:44

    It seems that currently we cannot use service worker with ng serve --prod. However we can make a workaround.

    1. We build the project ng build --prod

    2. From the dist location we take the ngsw-worker.js and ngsw.json files and copy them to the src folder.

    3. We modify our angular.json file in order to serve them. We find the property "projects": {"[my-project-name]": {... "architect": {... "build": {... "options": {... "assets": [... and there we add these two items – "src/ngsw-worker.js", "src/ngsw.json".

    4. We serve – ng serve --prod.

    I have reached till that point. The browser says that the SW is activated and running. The only consideration now is that if we change something in the SW, we need to rebuild again and make the same steps. But I believe we can develop more rapidly.

    Good luck!

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  • 2021-01-12 15:44

    With Chrome, you can enable a flag for treating a specific host as if it is a secure origin, allowing service workers to work:

    ./chrome --unsafely-treat-insecure-origin-as-secure=http://your.insecure.site:8080
    

    To launch chrome from the terminal, you do need to know the executable location. This will be system dependent. For MacOs:

    open /Applications/Google\ Chrome.app/ --args  --unsafely-treat-insecure-origin-as-secure=http://your.insecure.site:8080
    
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