CloseTo

This library makes floating point numbers easier to deal when comparing 2 values in the real world.

Tolerance

Using a tolerance makes comparing similar numbers a lot easier. For instance you might not care about the difference between 1.0 and 1.000001.

So for this we could use a tolerance of 1e-4 and then check for equality:

const closeTo = new CloseTo(1e-4);

if (closeTo.equals(1.0, 1.000001)) {
    console.log('Close enough');
}