Contents

/** Wraps a value in a function. If given a function, returns it as-is. */
const wrap = x => typeof x === 'function' ? x : () => x

/** Returns a predicate that returns true if all arguments are true or evaluate to true for the given input. */
const and = (...fs) => (...args) =>
  fs.length === 0 || (
    !!wrap(fs[0])(...args) &&
    and(...fs.slice(1))(...args)
  )

/** Returns a predicate that returns true if at least one argument is true or evaluates to true for the given input. */
const or = (...fs) => (...args) =>
  fs.length > 0 && (
    !!wrap(fs[0])(...args) ||
    or(...fs.slice(1))(...args)
  )

module.exports = { and, or }

Version data entries

33 entries across 33 versions & 1 rubygems

Version	Path
immosquare-cleaner-0.1.60	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.59	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.58	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.57	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.56	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.55	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.54	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.53	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.52	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.51	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.50	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.49	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.48	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.47	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.46	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.45	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.44	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.43	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.42	node_modules/fp-and-or/index.js
immosquare-cleaner-0.1.41	node_modules/fp-and-or/index.js