amp

Usage: amp(re, preds)

Takes a regex op re, and predicates. Returns a regex-op that consumes input as per re but subjects the resulting value to the conjunction of the predicates, and any conforming they might perform.

Source

Example:

const s = require('speculaas');
const {isEven, isString} = s.utils;

// Spec for array with even number of strings
s.def('::even-strings', s.amp(s.star(isString), x => isEven(x.length)));

s.isValid('::even-strings', ['a', 1]);
// false

s.isValid('::even-strings', ['a', 'b']);
// true

s.isValid('::even-strings', ['a', 'b', 'c']);
// false