oppi.li
source dump of claude code
1/**
2 * Lazy accessor for proper-lockfile.
3 *
4 * proper-lockfile depends on graceful-fs, which monkey-patches every fs
5 * method on first require (~8ms). Static imports of proper-lockfile pull this
6 * cost into the startup path even when no locking happens (e.g. `--help`).
7 *
8 * Import this module instead of `proper-lockfile` directly. The underlying
9 * package is only loaded the first time a lock function is actually called.
10 */
11
12import type { CheckOptions, LockOptions, UnlockOptions } from 'proper-lockfile'
13
14type Lockfile = typeof import('proper-lockfile')
15
16let _lockfile: Lockfile | undefined
17
18function getLockfile(): Lockfile {
19 if (!_lockfile) {
20 // eslint-disable-next-line @typescript-eslint/no-require-imports
21 _lockfile = require('proper-lockfile') as Lockfile
22 }
23 return _lockfile
24}
25
26export function lock(
27 file: string,
28 options?: LockOptions,
29): Promise<() => Promise<void>> {
30 return getLockfile().lock(file, options)
31}
32
33export function lockSync(file: string, options?: LockOptions): () => void {
34 return getLockfile().lockSync(file, options)
35}
36
37export function unlock(file: string, options?: UnlockOptions): Promise<void> {
38 return getLockfile().unlock(file, options)
39}
40
41export function check(file: string, options?: CheckOptions): Promise<boolean> {
42 return getLockfile().check(file, options)
43}