balena-cli/build/fast-boot.js

The official balena Command Line Interface

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.start = start;
exports.stop = stop;
const fs = require("fs");
const os = require("os");
const path = require("path");
const stat = process.pkg ? fs.statSync : fs.promises.stat;
let fastBootStarted = false;
async function start() {
    if (fastBootStarted) {
        return;
    }
    try {
        await $start();
        fastBootStarted = true;
    }
    catch (e) {
        if (process.env.DEBUG) {
            console.error(`\
[debug] Unable to start 'fast-boot2':
[debug] ${(e.message || '').split('\n').join('\n[debug] ')}
[debug] The CLI should still work, but it will run a bit slower.`);
        }
    }
}
function stop() {
    if (fastBootStarted) {
        require('fast-boot2').stop();
    }
    fastBootStarted = false;
}
async function $start() {
    const dotBalena = process.platform === 'win32' ? '_balena' : '.balena';
    const dataDir = path.normalize(process.env.BALENARC_DATA_DIRECTORY || path.join(os.homedir(), dotBalena));
    const cacheFile = path.join(dataDir, 'cli-module-cache.json');
    const root = path.join(__dirname, '..');
    const [, pJson, pStat, nStat] = await Promise.all([
        ensureCanWrite(dataDir, cacheFile),
        Promise.resolve().then(() => require('../package.json')),
        stat(path.join(root, 'package.json'), { bigint: true }),
        stat(path.join(root, 'npm-shrinkwrap.json'), { bigint: true }),
    ]);
    const cacheKiller = `${pJson.version}-${pStat.mtimeMs}-${nStat.mtimeMs}`;
    require('fast-boot2').start({
        cacheFile,
        cacheKiller,
        cacheScope: root,
    });
}
async function ensureCanWrite(dir, file) {
    const { access, mkdir } = fs.promises;
    try {
        try {
            await access(file, fs.constants.W_OK);
            return;
        }
        catch (e) {
            if (e.code !== 'ENOENT') {
                throw e;
            }
        }
        await mkdir(dir, { recursive: true, mode: 0o755 });
        await access(dir, fs.constants.W_OK);
    }
    catch (e) {
        throw new Error(`Unable to write file "${file}":\n${e.message}`);
    }
}
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