JSONFile/JSONFile.js at main · XTP3/JSONFile · GitHub

28 lines (22 loc) · 864 Bytes

const fs = require('fs').promises;

module.exports = class JSONFile {

constructor(path, jsonData = null) {

this.path = path;

this.jsonData = jsonData;

this.createFileIfNotExists().then(() => {

console.log(`JSON file '${this.path}' is ready to use`);

}).catch((err) => {

console.error(`Error creating JSON file '${this.path}': ${err}`);

});

}

async createFileIfNotExists() {

try {

await fs.access(this.path, fs.constants.F_OK);

}catch(err) {

await this.write(this.jsonData || {});

}

read = async () => JSON.parse(await fs.readFile(this.path, 'utf8'));

write = async data => fs.writeFile(this.path, JSON.stringify(data, null, 2));

modify = async jsonData => this.write({ ...await this.read(), ...jsonData });

}

Expand file tree