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build.js
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build.js
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//@ts-check
import { context, build } from "esbuild";
import { promises } from "fs";
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
// eslint-disable-next-line no-undef
var args = process.argv.slice(2);
const watch = args.includes("-w");
/**
* @type import("esbuild").BuildOptions
*/
const commonOptions = {
bundle: true,
minify: !watch,
minifyWhitespace: !watch,
minifySyntax: !watch,
sourcemap: watch,
target: "es2020",
platform: "browser",
format: "esm",
};
/**
* @type import("esbuild").BuildOptions
*/
const appOptions = {
...commonOptions,
entryPoints: ["src/app.js"],
outfile: `wwwroot/scripts/app.js`,
plugins: [
{
name: "pwa-build-informer",
setup(build) {
build.onEnd((result) => {
if (result.errors.length === 0) console.log("Success");
});
},
},
{
name: "pwa-sw-builder",
setup(currentBuild) {
currentBuild.onEnd((result) => {
if (result.errors.length === 0) {
build(swOptions);
}
});
},
},
],
};
/**
* @type import("esbuild").BuildOptions
*/
const swOptions = {
...commonOptions,
entryPoints: ["service-worker.js"],
outfile: `wwwroot/service-worker.js`,
plugins: [
{
name: "env",
setup(build) {
const timestamp = new Date().getTime();
// https://esbuild.github.io/plugins/#using-plugins
build.onResolve({ filter: /^build$/ }, (args) => ({
path: args.path,
namespace: "build-ns",
}));
build.onLoad({ filter: /.*/, namespace: "build-ns" }, () => ({
contents: JSON.stringify({ timestamp }),
loader: "json",
}));
build.onEnd((result) => {
if (result.errors.length === 0) {
console.log("SW generated, timestamp: " + timestamp);
}
});
},
},
],
};
if (!watch) {
await build(appOptions);
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
// eslint-disable-next-line no-undef
process.exit();
}
let ctx = await context(appOptions);
await ctx.watch();
let { host, port } = await ctx.serve({
servedir: "wwwroot",
host: "localhost",
});
console.log(`Listen on ${host}:${port}`);