@oclif/plugin-warn-if-update-available/lib/get-version.js

warns if there is a newer version of CLI released

import makeDebug from 'debug';
import { mkdir, writeFile } from 'node:fs/promises';
import { dirname } from 'node:path';
import { EnvHttpProxyAgent, fetch } from 'undici';
async function run([name, file, version, registry, authorization]) {
    const debug = makeDebug('get-version');
    debug('name:', name);
    debug('file:', file);
    debug('version:', version);
    debug('registry:', registry);
    const url = [
        registry.replace(/\/+$/, ''), // remove trailing slash
        name.replace('/', '%2f'), // scoped packages need escaped separator
    ].join('/');
    const headers = authorization ? { authorization } : {};
    await mkdir(dirname(file), { recursive: true });
    await writeFile(file, JSON.stringify({ current: version })); // touch file with current version to prevent multiple updates
    const response = await fetch(url, {
        dispatcher: new EnvHttpProxyAgent(),
        headers,
        signal: AbortSignal.timeout(5000),
    });
    if (!response.ok)
        throw new Error(`Failed to fetch ${url}: ${response.status} ${response.statusText}`);
    const body = (await response.json());
    await writeFile(file, JSON.stringify({ ...body['dist-tags'], current: version }));
    // eslint-disable-next-line unicorn/no-process-exit
    process.exit(0);
}
await run(process.argv.slice(2)).catch(async (error) => {
    const { handle } = await import('@oclif/core');
    await handle(error);
});