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node_modules/vant/es/image-preview/index.js

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+import _extends from "@babel/runtime/helpers/esm/extends";
+import Vue from 'vue';
+import VueImagePreview from './ImagePreview';
+import { isServer } from '../utils';
+var instance;
+var defaultConfig = {
+  loop: true,
+  value: true,
+  images: [],
+  maxZoom: 3,
+  minZoom: 1 / 3,
+  onClose: null,
+  onChange: null,
+  className: '',
+  showIndex: true,
+  closeable: false,
+  closeIcon: 'clear',
+  asyncClose: false,
+  transition: 'van-fade',
+  getContainer: 'body',
+  overlayStyle: null,
+  startPosition: 0,
+  swipeDuration: 300,
+  showIndicators: false,
+  closeOnPopstate: true,
+  closeIconPosition: 'top-right'
+};
+
+var initInstance = function initInstance() {
+  instance = new (Vue.extend(VueImagePreview))({
+    el: document.createElement('div')
+  });
+  document.body.appendChild(instance.$el);
+  instance.$on('change', function (index) {
+    if (instance.onChange) {
+      instance.onChange(index);
+    }
+  });
+  instance.$on('scale', function (data) {
+    if (instance.onScale) {
+      instance.onScale(data);
+    }
+  });
+};
+
+var ImagePreview = function ImagePreview(images, startPosition) {
+  if (startPosition === void 0) {
+    startPosition = 0;
+  }
+
+  /* istanbul ignore if */
+  if (isServer) {
+    return;
+  }
+
+  if (!instance) {
+    initInstance();
+  }
+
+  var options = Array.isArray(images) ? {
+    images: images,
+    startPosition: startPosition
+  } : images;
+
+  _extends(instance, defaultConfig, options);
+
+  instance.$once('input', function (show) {
+    instance.value = show;
+  });
+  instance.$once('closed', function () {
+    instance.images = [];
+  });
+
+  if (options.onClose) {
+    instance.$off('close');
+    instance.$once('close', options.onClose);
+  }
+
+  return instance;
+};
+
+ImagePreview.Component = VueImagePreview;
+
+ImagePreview.install = function () {
+  Vue.use(VueImagePreview);
+};
+
+export default ImagePreview;