79 lines
1.9 KiB
TypeScript
79 lines
1.9 KiB
TypeScript
import fs from 'node:fs/promises';
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import { type } from 'node:os';
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import process from 'node:process';
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import { setTimeout } from 'node:timers/promises';
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import { fileURLToPath } from 'node:url';
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import { consola } from 'consola';
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import { execa } from 'execa';
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import { dirname, join, resolve } from 'pathe';
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export type CheckedEnvironment = ReturnType<typeof checkEnvironment>;
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export function checkEnvironment(meta: ImportMeta) {
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if (/^(?:msys|mingw|cygwin)$/i.test(process.env.OSTYPE ?? '')) {
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consola.error('bash for windows is not supported. please use Powershell or cmd');
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process.exit(255);
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}
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process.umask(0o026);
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const __filename = fileURLToPath(meta.url);
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const __dirname = dirname(__filename);
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const __debug = process.env.NODE_ENV === 'debug';
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const __root = resolve(join(__dirname, '..', '..'));
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const __exit = process.exit;
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return { __filename, __dirname, __debug, __root, __exit };
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}
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async function where(cmd: string): Promise<boolean> {
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if (/\\/.test(cmd))
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return false;
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try {
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await execa`where "${cmd}"`;
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}
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catch {
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return false;
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}
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return true;
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}
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export async function which(cmd: TemplateStringsArray): Promise<boolean> {
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return type() === 'Windows_NT'
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? where(cmd[0]!)
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: Promise.any(
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Array.from(new Set(process.env.PATH?.split(':')))
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.map(p => fs.access(join(p, cmd[0]!), fs.constants.X_OK)),
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).then(_ => true, _ => false);
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}
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export async function awaitLock(file: string): Promise<void> {
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if (!(await which`flock`))
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throw new Error('flock is not installed!');
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consola.start(`waiting for file lock on ${file}`);
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const store = { locked: false };
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while (!store.locked)
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try {
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await execa`flock -ns "${file}" -c true`;
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await setTimeout(100);
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}
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catch {
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store.locked = true;
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}
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while (store.locked) {
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try {
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await execa`flock -ns "${file}" -c true`;
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}
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catch {
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await setTimeout(100);
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continue;
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}
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store.locked = false;
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}
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}
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