Sandbox::https://github.com/flexion/flexion-my-usage/blob/main/src/index.ts

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#!/usr/bin/env node

import { fileURLToPath } from "node:url";

import { openBrowser, spawnDetached } from "./browser.js";

import { runCli } from "./cli.js";

import { price } from "./pricing.js";

import { LOOPBACK_HOST, startServer } from "./server.js";

import { opencodeSource } from "./sources/opencode.js";

import { loadStaticFiles } from "./web-assets.js";

// Composition root, and nothing else: hands the real world - process, the opencode reader, the

// price table, the frontend build, a node:http server, a browser launcher - to runCli

// (src/cli.ts), which holds every decision and is covered at 100%. This file is excluded from

// the coverage gate as a humble object (vitest.config.ts) and scanned by scripts/branch-guard.ts

// to stay branch-free, so no if/&&/??/ternary belongs here: a new decision goes into cli.ts or a module it calls.

// runCli never rejects, and resolves once the server is listening (and the browser has been

// asked to open). The process then stays alive on the server's open handle until SIGINT or

// SIGTERM closes it (see server.ts), and exits with the code set here.

process.exitCode = await runCli(process.argv.slice(2), {

nodeVersion: process.versions.node,

discover: () => opencodeSource.discover(),

read: (handle) => opencodeSource.read(handle),

price: (rows, options) => price(rows, options),

// dist/web/, next to this file once built (see vite.web.config.ts). Run from source (tsx on

// src/index.ts) this would point at src/web/ - the frontend's unbuilt source, which a browser

// can't run - so `yarn dev` builds and runs dist/ instead.

loadAssets: () =>

loadStaticFiles(fileURLToPath(new URL("web", import.meta.url))),

serve: (site, port) =>

startServer(site, { host: LOOPBACK_HOST, port, signals: process }),

openBrowser: (url) => openBrowser(url, process.platform, spawnDetached),

stdout: (text) => {

process.stdout.write(text);

stderr: (text) => {

process.stderr.write(text);

});