/**
 * Removes a component's own (non-native) props from the leftover object that
 * a machine's `splitProps`/`contextProps` returns, leaving only the native
 * element attributes to spread onto the rendered element.
 *
 * This is the last step of the component pattern (`<zag>` ->
 * nativeAttrs). `machine.splitProps(input)[1]`
 * is everything the machine did NOT claim, which still includes the
 * component's own additive props — `class` (usually applied separately
 * through a `cn()`-style helper, so leaving it here would emit the class
 * twice), sugar callbacks backing Marko's two-way `bind` shorthand, attr-tag
 * bodies, `items=` array sugar, and variant props (`size`, `variant`). None
 * of those are valid DOM attributes, so all of them must be removed before
 * the rest is spread onto an element.
 *
 * Everything NOT listed survives, which is the point: consumer-supplied `id`,
 * `data-*`, `aria-*`, `title`, `tabindex` and form attributes keep flowing
 * through to the DOM untouched.
 *
 * `keys` is constrained to `keyof Source`, so a misspelled or stale key is a
 * compile error rather than a prop that silently starts leaking into the DOM.
 * The return type is `Omit<Source, Keys[number]>`, so the surviving attribute
 * surface stays fully typed at the call site — spreading the result onto an
 * element is checked exactly as a hand-written destructure would be.
 *
 * To strip a key that is deliberately absent from `Source` (a defensive
 * strip of a prop the machine never declares), widen the source at the call
 * site with `as typeof input`. That cast is intentionally required:
 * loosening `keys` to accept arbitrary strings would make every misspelling
 * in every other component compile silently.
 *
 * @example
 * <const/nativeAttrs=() =>
 *   stripOwnProps(sliderMachine.splitProps(input)[1], "class", "valueChange")
 * >
 */
export function stripOwnProps<Source extends object, Keys extends readonly (keyof Source)[]>(
  source: Source,
  ...keys: Keys
): Omit<Source, Keys[number]> {
  const native = { ...source } as Record<PropertyKey, unknown>;
  for (const key of keys) delete native[key as PropertyKey];
  return native as Omit<Source, Keys[number]>;
}