Custom Service Worker in any app with esbuild

Rishi Raj Jain
Nerd For Tech
Published in
1 min readJan 23, 2022

Lately I’ve been exploring use of Service Workers in web apps. Use cases include prefetching content at scale, speeding up your website, handling failovers and possibly many more. One of the problems that I continuously face is the need to adjust my service worker according to the framework, well no more. Let’s see what gold I dig up last week below 👇🏻

Where it started?

I was trying to set up a custom service worker with Angular 11, and the guide https://angular.io/guide/service-worker-getting-started asked me to install angular/pwa module, read https://angular.io/guide/service-worker-communications and then adapt to the angular’s way of creating service worker. Well, seemed like a lot of work to me, so I set out to create a framework-agnostic process for adding a custom service worker. Reflecting back, I think it was fairly easier with Vue 2 and 3, yet felt like a hacky way.

(What is a Service Worker?)

Show me the solution!

Step 0. Install esbuild

Step 1. Create workbox-config.js:

Learn more about what’s there in workbox config here:

Step 2. Create compile_sw.js:

Step 3. Compile and inject:

Step 4. Register the Service Worker

That’s all, enjoy! I hope this helps!

References

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Nerd For Tech
Nerd For Tech

Published in Nerd For Tech

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Rishi Raj Jain
Rishi Raj Jain

Written by Rishi Raj Jain

Previously, Technical Support Engineer at Lemon Squeezy, Technical Customer Success Manager at Edgio, and Ambassador at Storyblok

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