prefer-do-nothing.md

Prefer noop

When defining an empty function (e.g. for callbacks) it can be more readable to use R.doNothing() or R.constant(undefined) instead. Use R.doNothing() if you need to return void, otherwise use R.constant(undefined).

Rule Details

This rule takes no arguments.

The following patterns are considered warnings:

functionWithCallback(function () {});

const emptyFunction = () => {};

The following patterns are not considered warnings:

functionWithCallback(function (x) {
  return x + 1;
});

const sqr = (x) => x * x;

When Not To Use It

If you do not want to enforce using R.doNothing, you should not use this rule.