PTFIO provides functions to read and write entire files in a synchronized way. Many readers can concurrently read a file until a write is requested. The write will block until all existing readers exit and all new readers block until the file write can be completed.
npm i ptfio import ptfio from 'ptfio';
const queue = [];
queue.push(ptfio.readProtectedFile(Path));
queue.push(ptfio.writeProtectFile(Path, newContent));
queue.push(ptfio.readProtectedFile(Path));
const results = Promise.all(queue);result[0] will have the content before the write. result[1] will have the new content.
Reads the entire file as soon as no writes are occurring.
readProtectedFile(path: string)
readProtectedFile(path: string, encoding: string)
path (string) (required)
The path (relative or absolute) to the file
encoding (any)
The expected encoding.
Promise<string | buffer>
Replaces file when exclusive access can be obtained.
writeProtectedFile(path: string, content: any)
writeProtectedFile(path: string, content: any, encoding: string)
path (string) (required)
The path (relative or absolute) to the file
content (any) (required)
The data to be written
encoding (any)
The encoding of content.
Promise<string | buffer>
npm tests
This npm is a thin application of reader/writter locks (written by Micah Gorrell) on whole files.