want `assert.integer`

[trentm]

"number" isn't specific enough sometimes.

[trentm]

Maybe this is featuritis. Dunno. E.g. would want to specify if it is a positive int. Anyway, just noting this here.

[bahamas10]

+1 I could see benefit to this. They way I see assert-plus is as a library that adds certainty to variable types that compiled languages get for free... for example:

void func(int a, char *b) {
}

When func is called, you know 100% you have an int and char pointer. whereas with javascript, we can emulate it with:

function func(a, b) {
  assert.integer(a);
  assert.string(b);
}

I still maintain, however, that NDEBUG is key here, and a proper development cycle should render it that, in production, these assertions are unnecessary.

Regardless, I'm +1 on assert.integer and assert.positiveInteger

function isInteger(i) {
  return typeof (i) === 'number' && i % 1 === 0;
}
function isPositiveInteger(i) {
  return isInteger(i) && i >= 0;
}