All files / predicate/lib other.js

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'use strict';
 
const predicates = require('./predicates');
const utils = require('./utils');
 
const every = Array.prototype.every;
const some = Array.prototype.some;
 
const predicate = module.exports;
 
function ternary(pred, a, b) {
  if (predicates.bool(pred)) {
    return pred ? a : b;
  }
 
  if (predicates.undef(a)) {
    return utils.partial(predicate.ternary, pred);
  }
 
  if (predicates.undef(b)) {
    return utils.partial(predicate.ternary, pred, a);
  }
 
  return predicate.ternary(pred(a, b), a, b);
}
 
function and() {
  const predicateArgs = arguments;
 
  return function _and() {
    const args = arguments;
    return every.call(predicateArgs, p => p.apply(null, args));
  };
}
 
function or() {
  const predicateArgs = arguments;
 
  return function _or() {
    const args = arguments;
    return some.call(predicateArgs, p => p.apply(null, args));
  };
}
 
predicate.ternary = ternary;
predicate.and = and;
predicate.or = or;