def

Usage: def(k, spec)

Given a keyword or resolvable symbol k, and a spec, spec-name, predicate or regex-op makes an entry in the registry mapping k to the spec.

Source

Example:

const s = require('speculaas');

// Use a function as spec
s.def('::notZero', x => x !== 0);

s.isValid('::notZero', 42);
// true

// Use an array as spec
const suit = [':club', ':diamond', ':heart', ':spade'];
s.def('::suit', suit);

s.isValid('::suit', ':club'));
// true