How to use

reject

function

in

LoDashFp

const checkMissingDependencies = (moduleDefinitions, existingModules, dependencyGraph) => {
  const missingDependencies = f.flow(
    f.mapValues(
      f.reject(dependencyName =>
      moduleDefinitions[dependencyName] || existingModules[dependencyName]
      )
    ),
    f.pickBy('length'),
    f.toPairs
  )(dependencyGraph);

  if (missingDependencies.length) {
    f.forEach(([name, missing]) => {
      console.log(`unable to find dependencies "${missing.join(', ')}" for module "${name}"`);
    })(missingDependencies);
    throw new Error('missing dependencies');
  }
}