Node.js : indentJsonFile -- Replaces the content of a JSON file with indentation added

indentJsonFile.js

const fs = require('fs').promises

/**
 * Overwrites the content of a JSON file with indentation added.
 * @param {string} filePath Path to the JSON file.
 * @param {number} indentation Number of spaces used in indentation.
 * @returns {Promise<void>}
 */
async function indentJsonFile (filePath, indentation = 2) {
    const fileContent = await fs.readFile(filePath, { encoding: 'utf-8' })
    const json = JSON.stringify(JSON.parse(fileContent), null, indentation)
    await fs.writeFile(filePath, json)
}


// Sample call
await indentJsonFile('./path/to/file.json', 2)