oneuptime/CommonServer/Utils/LocalFile.ts

import { PromiseRejectErrorFunction } from 'Common/Types/FunctionTypes';
import fs from 'fs';

export default class LocalFile {
    public static sanitizeFilePath(filePath: string): string {
        // remove double slashes
        return filePath.replace(/\/\//g, '/');
    }

    public static async makeDirectory(path: string): Promise<void> {
        return new Promise(
            (resolve: VoidFunction, reject: PromiseRejectErrorFunction) => {
                fs.mkdir(path, { recursive: true }, (err: Error | null) => {
                    if (err) {
                        return reject(err);
                    }
                    resolve();
                });
            }
        );
    }

    public static async write(path: string, data: string): Promise<void> {
        return new Promise(
            (resolve: VoidFunction, reject: PromiseRejectErrorFunction) => {
                fs.writeFile(path, data, (err: Error | null) => {
                    if (err) {
                        return reject(err);
                    }
                    resolve();
                });
            }
        );
    }

    public static async read(path: string): Promise<string> {
        return new Promise(
            (
                resolve: (data: string) => void,
                reject: PromiseRejectErrorFunction
            ) => {
                fs.readFile(
                    path,
                    { encoding: 'utf-8' },
                    (err: Error | null, data: string) => {
                        if (!err) {
                            return resolve(data);
                        }
                        return reject(err);
                    }
                );
            }
        );
    }
}