is a small library that implements lazy evaluation (call by need evaluation) as nonintrusively as possible with native JavaScript.
Works for arrays and objects.
Define a scope by calling the default export
import Scope from L;
Const L = Scope();
Define a lazy array
L.fib = [ 0, 1, i => fib[i - 1] + fib[i - 2] ];
fib[10]; // 10th digit of fib sequence
The array is generative instead of declarative. Declarative is on the feature list.
Notice how you refer to the array by only its name. In this way L. acts like var et al.
You can also define a lazy object
L.o = { a: () => 1 + 2, b: () => o.a + 3 };
o.a; // 3
o.b; // 6