Utility tool to append custom code to ServiceWorker created by Create React App.
It allows to keep the default CRA configuration (no ejecting). It simply appends custom code to the ServiceWorker file created by CRA build scripts. By default, it bundles the code using very basic Webpack+Babel configuration (this can be omitted; see options).
$ npm install cra-append-sw --save
$ cra-append-sw [options] <file>
-s, --skip-compile Skip compilation
-h, --help Output usage information
-e, --env [path] (./.env) Path to environment variables file
-m, --mode [mode] Output mode
-
dev
createspublic/<file>
instead of appending the code tobuild/service-worker.js
-
build
createsbuild/<file>
instead of appending the code tobuild/service-worker.js
-
replace
simply replacesbuild/service-worker.js
In package.json
modify build script to:
"start": "react-scripts start && cra-append-sw --mode dev ./custom-sw.js",
"build": "react-scripts build && cra-append-sw ./custom-sw.js",