28 lines
1.0 KiB
TypeScript
28 lines
1.0 KiB
TypeScript
import { randomUUID } from 'node:crypto';
|
|
import { mkdir, readFile, rename, rm, writeFile } from 'node:fs/promises';
|
|
import path from 'node:path';
|
|
|
|
export type JsonFileWriter = (filePath: string, value: unknown) => Promise<void>;
|
|
|
|
export async function atomicWriteText(filePath: string, source: string): Promise<void> {
|
|
await mkdir(path.dirname(filePath), { recursive: true });
|
|
const temporaryPath = path.join(
|
|
path.dirname(filePath),
|
|
`.${path.basename(filePath)}.${randomUUID()}.tmp`,
|
|
);
|
|
try {
|
|
await writeFile(temporaryPath, source, { encoding: 'utf8', flag: 'wx' });
|
|
await rename(temporaryPath, filePath);
|
|
} finally {
|
|
await rm(temporaryPath, { force: true }).catch(() => undefined);
|
|
}
|
|
}
|
|
|
|
export async function atomicWriteJson(filePath: string, value: unknown): Promise<void> {
|
|
await atomicWriteText(filePath, `${JSON.stringify(value, null, 2)}\n`);
|
|
}
|
|
|
|
export async function readJsonFile(filePath: string): Promise<unknown> {
|
|
return JSON.parse(await readFile(filePath, 'utf8')) as unknown;
|
|
}
|