ComfyUI/web/extensions/core/widgetInputs.js

// Shim for extensions\core\widgetInputs.ts
export const getWidgetConfig = window.comfyAPI.widgetInputs.getWidgetConfig;
export const setWidgetConfig = window.comfyAPI.widgetInputs.setWidgetConfig;
export const mergeIfValid = window.comfyAPI.widgetInputs.mergeIfValid;