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Avio Lines
MediumJavaScriptPractice mode: untimed, 3 hints

Order lines from a form

orderLines(items) builds order lines from a form. A missing quantity (absent or null) means 1. An explicit 0 means the customer removed the item, so that line is left out.

The code has exactly one planted bug. Reproduce it with the tests, fix it with the smallest change, then submit.

Visible tests

  1. removed item stays removed

    • orderLines([{"sku":"A"},{"sku":"B","qty":0}]) → [{"sku":"A","qty":1}]

  2. given quantity

    • orderLines([{"sku":"C","qty":3}]) → [{"sku":"C","qty":3}]

Hints 0/3

    // Builds order lines from a form. A missing quantity means 1; an explicit 0 means the
// customer removed the item, so that line is left out.
function orderLines(items) {
  const lines = [];
  for (const item of items) {
    const qty = item.qty || 1;
    if (qty > 0) lines.push({ sku: item.sku, qty });
  }
  return lines;
}

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