[refactor] introduce frontend type augmentation pattern (#4192)

src/composables/widgets/useImageUploadWidget.ts

@@ -9,6 +9,7 @@ import type { ResultItem } from '@/schemas/apiSchema'
 import type { InputSpec } from '@/schemas/nodeDefSchema'
 import type { ComfyWidgetConstructor } from '@/scripts/widgets'
 import { useNodeOutputStore } from '@/stores/imagePreviewStore'
+import { isImageUploadInput } from '@/types/nodeDefAugmentation'
 import { createAnnotatedPath } from '@/utils/formatUtil'
 import { addToComboValues } from '@/utils/litegraphUtil'
 
@@ -33,7 +34,13 @@ export const useImageUploadWidget = () => {
     inputName: string,
     inputData: InputSpec
   ) => {
-    const inputOptions = inputData[1] ?? {}
+    if (!isImageUploadInput(inputData)) {
+      throw new Error(
+        'Image upload widget requires imageInputName augmentation'
+      )
+    }
+
+    const inputOptions = inputData[1]
     const { imageInputName, allow_batch, image_folder = 'input' } = inputOptions
     const nodeOutputStore = useNodeOutputStore()
 
@@ -43,11 +50,9 @@ export const useImageUploadWidget = () => {
     const { showPreview } = isVideo ? useNodeVideo(node) : useNodeImage(node)
 
     const fileFilter = isVideo ? isVideoFile : isImageFile
-    // @ts-expect-error InputSpec is not typed correctly
     const fileComboWidget = findFileComboWidget(node, imageInputName)
     const initialFile = `${fileComboWidget.value}`
     const formatPath = (value: InternalFile) =>
-      // @ts-expect-error InputSpec is not typed correctly
       createAnnotatedPath(value, { rootFolder: image_folder })
 
     const transform = (internalValue: InternalValue): ExposedValue => {
@@ -67,7 +72,6 @@ export const useImageUploadWidget = () => {
 
     // Setup file upload handling
     const { openFileSelection } = useNodeImageUpload(node, {
-      // @ts-expect-error InputSpec is not typed correctly
       allow_batch,
       fileFilter,
       accept,