JS

/*
 * Use const > let > var
 * Use functional way whenever possible
 * Optimize only when necessary (you test and find the bottleneck part).
 * Prefer pure functions that return rather than mututate global values.
 * Destructing to write cleaner code
 * Spread rest for clean code
 * Object short hands
 * Promises, Promise.all, Promise.race
 * async await is good!
 * import/export

Mozilla Developer Network
*/

// ECMASCript: http://2ality.com/ ECMAScript
// ES5
// arr.map/filter/reduce/some/every
// ES2015
// let/const/Promises/destructuring/array spread|rest
// ES2016
// a ** 2
// ES2017
// async await
// ES2018
// Object spread|rest
// Future: https://github.com/tc39/proposals

// VSCode Editor