How to use

negate

function

in

LoDashStatic

function* explainInvalid(values, predicates, via) {
  if (values.length !== predicates.length) return;

  const pairs = _.zip(predicates, values);
  const isInvalid = _.negate(_.spread(isValid));
  const index = _.findIndex(pairs, isInvalid);
  if (index !== -1) {
    const [spec, val] = pairs[index];
    yield* firstProblem(spec, val, {path: [index], via, _in: [index]});
  }
}

return BluebirdPromise.all(modelPromisesArray)
 .then(function(list) {
  return _.filter(list, _.negate(_.isUndefined));
 });

 help: '',
 context: false,
 isAvailable: _.negate(_.noop),
 options: {}
};

 result[key] = _.flow([
  fp.map((a) => recursionFn(a, subpaths)),
  fp.filter(_.negate(_.isEmpty)),
 ])(value);
} else if (_.isObject(value)) {