Function dedupeProducts

dedupeProducts(products: readonly Product[]): Product[]

Remove duplicate products from a result set, keeping the first occurrence of each identity as determined by getProductDedupeKey. Products with no usable identity are always kept (never merged with each other). Order is preserved.

Parameters

products: readonly Product[]
The products to de-duplicate.

Returns Product[]

A new array with later duplicates of each product identity removed.

Example

dedupeProducts([
  { supplier: "Carolina Chemical", cacheKey: "6981" },
  { supplier: "Carolina Chemical", cacheKey: "6981" },
]).length; // 1

Source

export function dedupeProducts(products: readonly Product[]): Product[] {
  const seen = new Set<string>();
  const result: Product[] = [];
  for (const product of products) {
    const key = getProductDedupeKey(product);
    if (key !== undefined) {
      if (seen.has(key)) continue;
      seen.add(key);
    }
    result.push(product);
  }
  return result;
}