types(ImagePreview): use tsx (#8176)

src/image-preview/ImagePreview.tsx

@@ -1,9 +1,8 @@
-import { nextTick, onMounted, reactive, ref, watch } from 'vue';
+import { nextTick, onMounted, PropType, reactive, ref, watch } from 'vue';
 
 // Utils
-import { UnknownProp } from '../utils';
-import { bem, createComponent } from './shared';
-import { callInterceptor } from '../utils/interceptor';
+import { ComponentInstance, UnknownProp, createNamespace } from '../utils';
+import { callInterceptor, Interceptor } from '../utils/interceptor';
 
 // Composition
 import { useWindowSize } from '@vant/use';
@@ -11,19 +10,21 @@ import { useExpose } from '../composables/use-expose';
 
 // Components
 import Icon from '../icon';
-import Swipe from '../swipe';
-import Popup from '../popup';
+import Swipe, { SwipeToOptions } from '../swipe';
+import Popup, { PopupCloseIconPosition } from '../popup';
 import ImagePreviewItem from './ImagePreviewItem';
 
+const [createComponent, bem] = createNamespace('image-preview');
+
 export default createComponent({
   props: {
     show: Boolean,
     closeable: Boolean,
     className: UnknownProp,
-    beforeClose: Function,
+    beforeClose: Function as PropType<Interceptor>,
     showIndicators: Boolean,
     images: {
-      type: Array,
+      type: Array as PropType<string[]>,
       default: () => [],
     },
     loop: {
@@ -63,7 +64,7 @@ export default createComponent({
       default: true,
     },
     closeIconPosition: {
-      type: String,
+      type: String as PropType<PopupCloseIconPosition>,
       default: 'top-right',
     },
   },
@@ -71,7 +72,7 @@ export default createComponent({
   emits: ['scale', 'close', 'closed', 'change', 'update:show'],
 
   setup(props, { emit, slots }) {
-    const swipeRef = ref();
+    const swipeRef = ref<ComponentInstance>();
     const windowSize = useWindowSize();
 
     const state = reactive({
@@ -89,11 +90,11 @@ export default createComponent({
       }
     };
 
-    const emitScale = (args) => {
+    const emitScale = (args: { scale: number; index: number }) => {
       emit('scale', args);
     };
 
-    const toggle = (show) => {
+    const toggle = (show: boolean) => {
       emit('update:show', show);
     };
 
@@ -107,7 +108,7 @@ export default createComponent({
       });
     };
 
-    const setActive = (active) => {
+    const setActive = (active: number) => {
       if (active !== state.active) {
         state.active = active;
         emit('change', active);
@@ -177,7 +178,7 @@ export default createComponent({
       emit('closed');
     };
 
-    const swipeTo = (index, options) => {
+    const swipeTo = (index: number, options?: SwipeToOptions) => {
       if (swipeRef.value) {
         swipeRef.value.swipeTo(index, options);
       }
@@ -189,7 +190,12 @@ export default createComponent({
 
     watch([windowSize.width, windowSize.height], resize);
 
-    watch(() => props.startPosition, setActive);
+    watch(
+      () => props.startPosition,
+      (value) => {
+        setActive(+value);
+      }
+    );
 
     watch(
       () => props.show,

src/image-preview/ImagePreviewItem.tsx

@@ -1,8 +1,7 @@
-import { watch, computed, reactive } from 'vue';
+import { watch, computed, reactive, CSSProperties, defineComponent } from 'vue';
 
 // Utils
-import { bem } from './shared';
-import { range, preventDefault } from '../utils';
+import { range, preventDefault, createNamespace } from '../utils';
 
 // Composition
 import { useTouch } from '../composables/use-touch';
@@ -12,22 +11,36 @@ import Image from '../image';
 import Loading from '../loading';
 import SwipeItem from '../swipe-item';
 
-function getDistance(touches) {
+function getDistance(touches: TouchList) {
   return Math.sqrt(
     (touches[0].clientX - touches[1].clientX) ** 2 +
       (touches[0].clientY - touches[1].clientY) ** 2
   );
 }
 
-export default {
+const bem = createNamespace('image-preview')[1];
+
+export default defineComponent({
   props: {
     src: String,
     show: Boolean,
     active: Number,
-    minZoom: [Number, String],
-    maxZoom: [Number, String],
-    rootWidth: Number,
-    rootHeight: Number,
+    minZoom: {
+      type: [Number, String],
+      required: true,
+    },
+    maxZoom: {
+      type: [Number, String],
+      required: true,
+    },
+    rootWidth: {
+      type: Number,
+      required: true,
+    },
+    rootHeight: {
+      type: Number,
+      required: true,
+    },
   },
 
   emits: ['scale', 'close'],
@@ -54,7 +67,7 @@ export default {
 
     const imageStyle = computed(() => {
       const { scale, moveX, moveY, moving, zooming } = state;
-      const style = {
+      const style: CSSProperties = {
         transitionDuration: zooming || moving ? '0s' : '.3s',
       };
 
@@ -93,7 +106,7 @@ export default {
       return 0;
     });
 
-    const setScale = (scale) => {
+    const setScale = (scale: number) => {
       scale = range(scale, +props.minZoom, +props.maxZoom);
 
       if (scale !== state.scale) {
@@ -119,14 +132,14 @@ export default {
       state.moveY = 0;
     };
 
-    let startMoveX;
-    let startMoveY;
-    let startScale;
-    let startDistance;
-    let doubleTapTimer;
-    let touchStartTime;
+    let startMoveX: number;
+    let startMoveY: number;
+    let startScale: number;
+    let startDistance: number;
+    let doubleTapTimer: NodeJS.Timeout | null;
+    let touchStartTime: number;
 
-    const onTouchStart = (event) => {
+    const onTouchStart = (event: TouchEvent) => {
       const { touches } = event;
       const { offsetX } = touch;
 
@@ -134,7 +147,7 @@ export default {
 
       startMoveX = state.moveX;
       startMoveY = state.moveY;
-      touchStartTime = new Date();
+      touchStartTime = Date.now();
 
       state.moving = touches.length === 1 && state.scale !== 1;
       state.zooming = touches.length === 2 && !offsetX.value;
@@ -145,7 +158,7 @@ export default {
       }
     };
 
-    const onTouchMove = (event) => {
+    const onTouchMove = (event: TouchEvent) => {
       const { touches } = event;
 
       touch.move(event);
@@ -172,7 +185,7 @@ export default {
 
     const checkTap = () => {
       const { offsetX, offsetY } = touch;
-      const deltaTime = new Date() - touchStartTime;
+      const deltaTime = Date.now() - touchStartTime;
       const TAP_TIME = 250;
       const TAP_OFFSET = 10;
 
@@ -194,7 +207,7 @@ export default {
       }
     };
 
-    const onTouchEnd = (event) => {
+    const onTouchEnd = (event: TouchEvent) => {
       let stopPropagation = false;
 
       /* istanbul ignore else */
@@ -234,8 +247,8 @@ export default {
       touch.reset();
     };
 
-    const onLoad = (event) => {
-      const { naturalWidth, naturalHeight } = event.target;
+    const onLoad = (event: Event) => {
+      const { naturalWidth, naturalHeight } = event.target as HTMLImageElement;
       state.imageRatio = naturalHeight / naturalWidth;
     };
 
@@ -274,4 +287,4 @@ export default {
       );
     };
   },
-};
+});

src/image-preview/index.tsx

@@ -1,23 +1,47 @@
-import { inBrowser } from '../utils';
+import { App, TeleportProps } from 'vue';
+import { ComponentInstance, inBrowser } from '../utils';
 import { mountComponent, usePopupState } from '../utils/mount-component';
+import { Interceptor } from '../utils/interceptor';
+import { PopupCloseIconPosition } from '../popup';
 import VanImagePreview from './ImagePreview';
 
-let instance;
+let instance: ComponentInstance;
 
-const defaultConfig = {
+export type ImagePreviewOptions = {
+  loop?: boolean;
+  images: string[];
+  maxZoom?: number;
+  minZoom?: number;
+  teleport?: TeleportProps['to'];
+  className?: unknown;
+  showIndex?: boolean;
+  closeable?: boolean;
+  closeIcon?: string;
+  beforeClose?: Interceptor;
+  swipeDuration?: number;
+  startPosition?: number;
+  showIndicators?: boolean;
+  closeOnPopstate?: boolean;
+  closeIconPosition?: PopupCloseIconPosition;
+  onClose?(): void;
+  onScale?(args: { scale: number; index: number }): void;
+  onChange?(index: number): void;
+};
+
+const defaultConfig: ImagePreviewOptions = {
   loop: true,
   images: [],
   maxZoom: 3,
   minZoom: 1 / 3,
-  onScale: null,
-  onClose: null,
-  onChange: null,
+  onScale: undefined,
+  onClose: undefined,
+  onChange: undefined,
   teleport: 'body',
   className: '',
   showIndex: true,
   closeable: false,
   closeIcon: 'clear',
-  beforeClose: null,
+  beforeClose: undefined,
   startPosition: 0,
   swipeDuration: 300,
   showIndicators: false,
@@ -29,9 +53,8 @@ function initInstance() {
   ({ instance } = mountComponent({
     setup() {
       const { state, toggle } = usePopupState();
-
       const onClosed = () => {
-        state.images = [];
+        (state as any).images = [];
       };
 
       return () => (
@@ -47,7 +70,10 @@ function initInstance() {
   }));
 }
 
-const ImagePreview = (images, startPosition = 0) => {
+const ImagePreview = (
+  images: string[] | ImagePreviewOptions,
+  startPosition = 0
+) => {
   /* istanbul ignore if */
   if (!inBrowser) {
     return;
@@ -69,8 +95,8 @@ const ImagePreview = (images, startPosition = 0) => {
 
 ImagePreview.Component = VanImagePreview;
 
-ImagePreview.install = (app) => {
-  app.use(VanImagePreview);
+ImagePreview.install = (app: App) => {
+  app.use(VanImagePreview as any);
 };
 
 export default ImagePreview;

src/image-preview/shared.js

@@ -1,5 +0,0 @@
-import { createNamespace } from '../utils';
-
-const [createComponent, bem] = createNamespace('image-preview');
-
-export { createComponent, bem };

src/vue-tsx-shim.d.ts

@@ -12,11 +12,13 @@ declare module 'vue' {
     onBlur?: EventHandler;
     onOpen?: EventHandler;
     onEdit?: EventHandler;
+    onLoad?: EventHandler;
     onClose?: EventHandler;
     onFocus?: EventHandler;
     onInput?: EventHandler;
     onClick?: EventHandler;
     onPress?: EventHandler;
+    onScale?: EventHandler;
     onCancel?: EventHandler;
     onOpened?: EventHandler;
     onClosed?: EventHandler;
@@ -26,7 +28,10 @@ declare module 'vue' {
     onToggle?: EventHandler;
     onConfirm?: EventHandler;
     onKeypress?: EventHandler;
+    onTouchend?: EventHandler;
     onClickStep?: EventHandler;
+    onTouchmove?: EventHandler;
     onTouchstart?: EventHandler;
+    onTouchcancel?: EventHandler;
   }
 }