lodash-traits/dist/index.js

Traits for lodash

"use strict";

function _implSymbol(target, sym, value) {
  Object.defineProperty(target, sym, {
    value,
    configurable: true
  });
  return target[sym];
}

function _getSymbol(targetSymName, ...traitSets) {
  let symbol;
  traitSets.forEach(traitSet => {
    const sym = traitSet[targetSymName];

    if (typeof sym === 'symbol') {
      if (!!symbol && symbol !== sym) {
        throw new Error(`Symbol ${targetSymName} offered by multiple trait sets.`);
      }

      symbol = sym;
    }
  });

  if (!symbol) {
    throw new Error(`No trait set is providing symbol ${targetSymName}.`);
  }

  return symbol;
}

function _testTraitSet(traitSet) {
  if (!traitSet || typeof traitSet === 'boolean' || typeof traitSet === 'number' || typeof traitSet === 'string') {
    throw new Error(`${traitSet} cannot be used as a trait set.`);
  }
}

const {
  TraitSet
} = require('@straits/utils');

const lodash = require('lodash');

_testTraitSet(TraitSet);

const _defineAndImplMemberFreeFunctionsAsTraits = _getSymbol("defineAndImplMemberFreeFunctionsAsTraits", TraitSet);

const traits = new TraitSet();

traits[_defineAndImplMemberFreeFunctionsAsTraits](Object.prototype, lodash);

module.exports = traits;