otdt offers an alternative syntax for IIFEs.
It's an abbreviation of "on these, do this".
// The normal way:
((a, b) => a + b)(1, 2)
// With otdt:
const e = require('otdt');
e((a = 1, b = 2) => a + b);
// Alternatively:
const e = require('otdt');
e(1, 2, (a, b) => a + b)