Function ɵɵtwoWayProperty

packages/core/src/render3/instructions/two_way.ts:33–53

(
  propName: string,
  value: T | WritableSignal<T>,
  sanitizer?: SanitizerFn | null,
)

 * @codeGenApi
 */
export function ɵɵtwoWayProperty<T>(
  propName: string,
  value: T | WritableSignal<T>,
  sanitizer?: SanitizerFn | null,
): typeof ɵɵtwoWayProperty {
  // TODO(crisbeto): perf impact of re-evaluating this on each change detection?
  if (isWritableSignal(value)) {
    value = value();
  }

  const lView = getLView();
  const bindingIndex = nextBindingIndex();
  if (bindingUpdated(lView, bindingIndex, value)) {
    const tView = getTView();
    const tNode = getSelectedTNode();
    setPropertyAndInputs(tNode, lView, propName, value, lView[RENDERER], sanitizer);
    ngDevMode && storePropertyBindingMetadata(tView.data, tNode, propName, bindingIndex);
  }

  return ɵɵtwoWayProperty;
}

/**
 * Function used inside two-way listeners to conditionally set the value of the bound expression.