Check if a value is an integer primitive. ```javascript const lolite = require("lolite.isinteger") const assert = require("node:assert")
npm install lolite.isintegerjavascript
const lolite = require("lolite.isinteger")
const assert = require("node:assert")
assert.ok(lolite.isInteger(42))
assert.ok(lolite.isInteger(-42))
assert.ok(lolite.isInteger(0))
assert.ok(lolite.isInteger(-0))
assert.ok(!lolite.isInteger(3.14)) // decimals are not integers
assert.ok(!lolite.isInteger(-2.5)) // still not integers
assert.ok(!lolite.isInteger(Infinity)) // too big to be finite
assert.ok(!lolite.isInteger(NaN)) // not a number, ironically
assert.ok(!lolite.isInteger(new Number(5))) // boxed numbers are impostors
assert.ok(!lolite.isInteger("42")) // strings are not integers
assert.ok(!lolite.isInteger(null)) // null is not an integer
assert.ok(!lolite.isInteger(undefined)) // undefined is not an integer
``