Rapid File Saver

rapidFileSaver.js

var fs = require('fs');
var path = require('path');

const TEMP_FILE_PATH = path.resolve(__dirname, '../../src/playground/tempFile.js');

// Recommendation: Do not set lower than 200ms 
// File changes that quickly will not allow webpack to finish compiling

const REWRITE_TIMEOUT_MIN = 200; 
const REWRITE_TIMEOUT_MAX = 300;
const getRandomInRange = (min, max) => (Math.random() * (max - min) + min)
const getTimeout = () => getRandomInRange(REWRITE_TIMEOUT_MIN, REWRITE_TIMEOUT_MAX);

const FILE_VALUES = [
    {name: 'add', content:'export default (a, b) => (a + b);'},
    {name: 'subtract', content:'export default (a, b) => (a - b);'},
    {name: 'divide', content:'export default (a, b) => (a / b);'},
    {name: 'multiply', content:'export default (a, b) => (a * b);'},
];

let currentValue = 1;
const getValue = () => {
    const value = FILE_VALUES[currentValue];
    if (currentValue === FILE_VALUES.length-1) {
        currentValue = 0;
    } else {
        currentValue++;
    }
    return value;
}


const writeToFile = () => {
    const {name, content} = getValue();
    console.log(`${new Date().toISOString()} -- WRITING (${name}) --`);
    fs.writeFileSync(TEMP_FILE_PATH, content);
    setTimeout(writeToFile, getTimeout());
}

writeToFile();