Implementation of Cash Register for Free Code Camp

cash-register.json

{"index.js":"\nvar denominations = [\n  { name: 'ONE HUNDRED', val: 100.00},\n  { name: 'TWENTY', val: 20.00},\n  { name: 'TEN', val: 10.00},\n  { name: 'FIVE', val: 5.00},\n  { name: 'ONE', val: 1.00},\n  { name: 'QUARTER', val: 0.25},\n  { name: 'DIME', val: 0.10},\n  { name: 'NICKEL', val: 0.05},\n  { name: 'PENNY', val: 0.01}\n];\n\nfunction checkCashRegister(price, cash, cid) {\n  var result = { status: null, change: [] };\n  var change = cash - price;\n\n  var register = cid.reduce(function(acc, curr) {\n    acc.total += curr[1];\n    acc[curr[0]] = curr[1];\n    return acc;\n  }, { total: 0 });\n\n  if (register.total === change) {\n    result.status = 'CLOSED';\n    result.change = cid;\n    return result;\n  }\n\n  // Handle obvious insufficient funds\n  if (register.total < change) {\n    result.status = 'INSUFFICIENT_FUNDS';\n    return result;\n  }\n\n  var change_arr = denominations.reduce(function(acc, curr) {\n    var value = 0;\n    \n    while (register[curr.name] > 0 && change >= curr.val) {\n      change -= curr.val;\n      register[curr.name] -= curr.val;\n      value += curr.val;\n\n      change = Math.round(change * 100) / 100;\n    }\n    \n    if (value > 0) {\n        acc.push([ curr.name, value ]);\n    }\n    return acc; \n  }, []);\n\n  if (change_arr.length < 1 || change > 0) {\n    result.status = 'INSUFFICIENT_FUNDS';\n    return result;\n  }\n\n  result.status = 'OPEN';\n  result.change = change_arr;\n  return result;\n}\n\n// Example cash-in-drawer array:\n// [[\"PENNY\", 1.01],\n// [\"NICKEL\", 2.05],\n// [\"DIME\", 3.1],\n// [\"QUARTER\", 4.25],\n// [\"ONE\", 90],\n// [\"FIVE\", 55],\n// [\"TEN\", 20],\n// [\"TWENTY\", 60],\n// [\"ONE HUNDRED\", 100]]\n\ncheckCashRegister(19.5, 20, [[\"PENNY\", 1.01], [\"NICKEL\", 2.05], [\"DIME\", 3.1], [\"QUARTER\", 4.25], [\"ONE\", 90], [\"FIVE\", 55], [\"TEN\", 20], [\"TWENTY\", 60], [\"ONE HUNDRED\", 100]]);"}