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luhn-generator

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A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm

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var arrayMap = require('./_arrayMap'), baseGet = require('./_baseGet'), baseIteratee = require('./_baseIteratee'), baseMap = require('./_baseMap'), baseSortBy = require('./_baseSortBy'), baseUnary = require('./_baseUnary'), compareMultiple = require('./_compareMultiple'), identity = require('./identity'), isArray = require('./isArray'); /** * The base implementation of `_.orderBy` without param guards. * * @private * @param {Array|Object} collection The collection to iterate over. * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by. * @param {string[]} orders The sort orders of `iteratees`. * @returns {Array} Returns the new sorted array. */ function baseOrderBy(collection, iteratees, orders) { if (iteratees.length) { iteratees = arrayMap(iteratees, function(iteratee) { if (isArray(iteratee)) { return function(value) { return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee); } } return iteratee; }); } else { iteratees = [identity]; } var index = -1; iteratees = arrayMap(iteratees, baseUnary(baseIteratee)); var result = baseMap(collection, function(value, key, collection) { var criteria = arrayMap(iteratees, function(iteratee) { return iteratee(value); }); return { 'criteria': criteria, 'index': ++index, 'value': value }; }); return baseSortBy(result, function(object, other) { return compareMultiple(object, other, orders); }); } module.exports = baseOrderBy;