@sarahisweird/hmoog/dist/fileWatcher.js

Out-of-game automation for Hackmud

import { watch as watchFile } from 'node:fs/promises';
export default class FileWatcher {
    filePath;
    listeners = [];
    abortController;
    constructor(filePath) {
        this.filePath = filePath;
        this.abortController = new AbortController();
        this.listen().then();
    }
    waitForChange() {
        return new Promise((resolve) => {
            this.listeners.push(resolve);
        });
    }
    close() {
        this.abortController.abort();
    }
    async listen() {
        try {
            const watcher = watchFile(this.filePath, {
                signal: this.abortController.signal,
                persistent: true,
            });
            for await (const event of watcher) {
                if (event.eventType !== 'change')
                    continue;
                let listener;
                while (listener = this.listeners.pop()) {
                    listener();
                }
            }
        }
        catch (error) {
            if (!(error instanceof Error) || error.name !== 'AbortError')
                throw error;
        }
    }
}