import { existsSync, promises as fsp } from "node:fs";
import { defineNitroPreset } from "nitropack/kit";
import { resolve } from "pathe";
import { joinURL } from "ufo";
const serviceWorker = defineNitroPreset(
() => {
return {
extends: "base-worker",
entry: "./runtime/service-worker",
output: {
serverDir: "{{ output.dir }}/public/server"
},
commands: {
preview: "npx serve ./public"
},
hooks: {
"prerender:generate"(route, nitro) {
const script = scriptTemplate(nitro.options.baseURL);
route.contents = (route.contents || "").replace(
"",
`${script}
`
);
},
async compiled(nitro) {
await fsp.writeFile(
resolve(nitro.options.output.publicDir, "sw.js"),
`self.importScripts('${joinURL(
nitro.options.baseURL,
"server/index.mjs"
)}');`,
"utf8"
);
const html = htmlTemplate(nitro.options.baseURL);
if (!existsSync(resolve(nitro.options.output.publicDir, "index.html"))) {
await fsp.writeFile(
resolve(nitro.options.output.publicDir, "index.html"),
html,
"utf8"
);
}
if (!existsSync(resolve(nitro.options.output.publicDir, "200.html"))) {
await fsp.writeFile(
resolve(nitro.options.output.publicDir, "200.html"),
html,
"utf8"
);
}
if (!existsSync(resolve(nitro.options.output.publicDir, "404.html"))) {
await fsp.writeFile(
resolve(nitro.options.output.publicDir, "404.html"),
html,
"utf8"
);
}
}
}
};
},
{
name: "service-worker",
url: import.meta.url
}
);
export default [serviceWorker];
function htmlTemplate(baseURL = "/") {
return (
/* html */
`
${scriptTemplate(baseURL)}
Initializing nitro service worker...
`
);
}
function scriptTemplate(baseURL = "/") {
return (
/* js */
`