source: frontend/node_modules/tempy/index.js

'use strict';
const fs = require('fs');
const path = require('path');
const uniqueString = require('unique-string');
const tempDir = require('temp-dir');
const isStream = require('is-stream');
const stream = require('stream');
const {promisify} = require('util');

const pipeline = promisify(stream.pipeline);
const {writeFile} = fs.promises;

const getPath = (prefix = '') => path.join(tempDir, prefix + uniqueString());

const writeStream = async (filePath, data) => pipeline(data, fs.createWriteStream(filePath));

module.exports.file = options => {
        options = {
                ...options
        };

        if (options.name) {
                if (options.extension !== undefined && options.extension !== null) {
                        throw new Error('The `name` and `extension` options are mutually exclusive');
                }

                return path.join(module.exports.directory(), options.name);
        }

        return getPath() + (options.extension === undefined || options.extension === null ? '' : '.' + options.extension.replace(/^\./, ''));
};

module.exports.directory = ({prefix = ''} = {}) => {
        const directory = getPath(prefix);
        fs.mkdirSync(directory);
        return directory;
};

module.exports.write = async (data, options) => {
        const filename = module.exports.file(options);
        const write = isStream(data) ? writeStream : writeFile;
        await write(filename, data);
        return filename;
};

module.exports.writeSync = (data, options) => {
        const filename = module.exports.file(options);
        fs.writeFileSync(filename, data);
        return filename;
};

Object.defineProperty(module.exports, 'root', {
        get() {
                return tempDir;
        }
});