esbuild w context

build.js

/** @type {esbuild.BuildOptions} **/
const config = {
  format: 'iife',
  entryPoints: [ENTRY],
  outfile: OUTFILE,
  bundle: false,
  plugins: [{
    name: 'on-end',
    setup(build) {
      build.onEnd(({ errors }) => {
        if (errors[0]) logError(errors[0]);
        else logSuccess();
      })
    }
  }]
};

const ctx = await esbuild.context(config);

if (DEV) {
  // enable watch mode
  // await ctx.watch();

  // enable server
  await ctx.serve({
    port: SERVE_PORT,
    servedir: SERVE_DIR
  }).then(() => {
    console.log(`Serving [${SERVE_DIR}] at http://localhost:${SERVE_PORT}`)
  });

  // free up resources on close
  process.on('exit', ctx.dispose);
} else {
  // run build once && dispose context
  await ctx.rebuild().finally(ctx.dispose);
}