Package Exports

is-bounded-number

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Readme

Is Bounded Number (`is-bounded-number`)

Provides a very simple and compact check on whether an input is all of these:

Numeric
Finite (i.e. not Infinity or NaN)
Within a given range (defaulting to +/- 1e15)

Note that this range has been chosen to be comfortably within Number.MAX_SAFE_INTEGER, which is approx 9e15.

Install

npm install is-bounded-number

Test

npm test

Usage

var ibn = require('is-bounded-number')

ibn(0)             // true
ibn(1)             // true
ibn(1000000)       // true
ibn(1e15)          // true
ibn(1e15+1)        // false - outside default limit of +/- 1e15

ibn(1000, 1e6)     // true - 1000 is less than 1e6
ibn(1e6, 1000)     // true - 1e6 is not within bounds +/- 1000

ibn(null)          // false
ibn("aString")     // false
ibn(true)          // false
ibn(false)         // false
ibn(Infinity)      // false
ibn(NaN)           // false

API

ibn(input)         // Checks whether input is within +/- 1e15
ibn(input, limit)  // Checks whether input is within +/- limit