build uni runtime(mp previewImage currentIndex)

packages/uni-mp-alipay/dist/index.js

@@ -361,9 +361,14 @@ const protocols = { // 需要做转换的 API 列表
   previewImage: {
     args (fromArgs) {
       // 支付宝小程序的 current 是索引值，而非图片地址。
-      if (fromArgs.current && Array.isArray(fromArgs.urls)) {
-        const index = fromArgs.urls.indexOf(fromArgs.current);
-        fromArgs.current = ~index ? index : 0;
+      const currentIndex = Number(fromArgs.current);
+      if (isNaN(currentIndex)) {
+        if (fromArgs.current && Array.isArray(fromArgs.urls)) {
+          const index = fromArgs.urls.indexOf(fromArgs.current);
+          fromArgs.current = ~index ? index : 0;
+        }
+      } else {
+        fromArgs.current = currentIndex;
       }
       return {
         indicator: false,

packages/uni-mp-alipay/package.json

 {
 	"name": "@dcloudio/uni-mp-alipay",
-	"version": "0.0.802",
+	"version": "0.0.803",
 	"description": "uni-app mp-alipay",
 	"main": "dist/index.js",
 	"scripts": {

packages/uni-mp-baidu/dist/index.js

@@ -144,6 +144,34 @@ function upx2px (number, newDeviceWidth) {
   return number < 0 ? -result : result
 }
 
+function normalize (fromArgs) {
+  let currentIndex = parseInt(fromArgs.current);
+  if (isNaN(currentIndex)) {
+    return
+  }
+  const urls = fromArgs.urls;
+  if (!Array.isArray(urls)) {
+    return
+  }
+  const len = urls.length;
+  if (!len) {
+    return
+  }
+  if (currentIndex < 0) {
+    currentIndex = 0;
+  } else if (currentIndex >= len) {
+    currentIndex = len - 1;
+  }
+  if (currentIndex > 0) {
+    fromArgs.current = urls[currentIndex];
+    fromArgs.urls = urls.filter(
+      (item, index) => index < currentIndex ? item !== urls[currentIndex] : true
+    );
+  } else {
+    fromArgs.current = urls[0];
+  }
+}
+
 // 不支持的 API 列表
 const todos = [
   'hideKeyboard',
@@ -205,9 +233,12 @@ const protocols = {
     }
   },
   previewImage: {
-    args: {
-      indicator: false,
-      loop: false
+    args (fromArgs) {
+      normalize(fromArgs);
+      return {
+        indicator: false,
+        loop: false
+      }
     }
   },
   getRecorderManager: {

packages/uni-mp-baidu/package.json

 {
 	"name": "@dcloudio/uni-mp-baidu",
-	"version": "0.0.828",
+	"version": "0.0.829",
 	"description": "uni-app mp-baidu",
 	"main": "dist/index.js",
 	"scripts": {

packages/uni-mp-toutiao/dist/index.js

@@ -144,6 +144,34 @@ function upx2px (number, newDeviceWidth) {
   return number < 0 ? -result : result
 }
 
+function normalize (fromArgs) {
+  let currentIndex = parseInt(fromArgs.current);
+  if (isNaN(currentIndex)) {
+    return
+  }
+  const urls = fromArgs.urls;
+  if (!Array.isArray(urls)) {
+    return
+  }
+  const len = urls.length;
+  if (!len) {
+    return
+  }
+  if (currentIndex < 0) {
+    currentIndex = 0;
+  } else if (currentIndex >= len) {
+    currentIndex = len - 1;
+  }
+  if (currentIndex > 0) {
+    fromArgs.current = urls[currentIndex];
+    fromArgs.urls = urls.filter(
+      (item, index) => index < currentIndex ? item !== urls[currentIndex] : true
+    );
+  } else {
+    fromArgs.current = urls[0];
+  }
+}
+
 // 不支持的 API 列表
 const todos = [
   'hideKeyboard',
@@ -238,9 +266,12 @@ const protocols = {
     }
   },
   previewImage: {
-    args: {
-      indicator: false,
-      loop: false
+    args (fromArgs) {
+      normalize(fromArgs);
+      return {
+        indicator: false,
+        loop: false
+      }
     }
   },
   connectSocket: {

packages/uni-mp-toutiao/package.json

 {
 	"name": "@dcloudio/uni-mp-toutiao",
-	"version": "0.0.326",
+	"version": "0.0.327",
 	"description": "uni-app mp-toutiao",
 	"main": "dist/index.js",
 	"scripts": {

packages/uni-mp-weixin/dist/index.js

@@ -144,8 +144,40 @@ function upx2px (number, newDeviceWidth) {
   return number < 0 ? -result : result
 }
 
-const protocols = {};
-const todos = [];
+function normalize (fromArgs) {
+  let currentIndex = parseInt(fromArgs.current);
+  if (isNaN(currentIndex)) {
+    return
+  }
+  const urls = fromArgs.urls;
+  if (!Array.isArray(urls)) {
+    return
+  }
+  const len = urls.length;
+  if (!len) {
+    return
+  }
+  if (currentIndex < 0) {
+    currentIndex = 0;
+  } else if (currentIndex >= len) {
+    currentIndex = len - 1;
+  }
+  if (currentIndex > 0) {
+    fromArgs.current = urls[currentIndex];
+    fromArgs.urls = urls.filter(
+      (item, index) => index < currentIndex ? item !== urls[currentIndex] : true
+    );
+  } else {
+    fromArgs.current = urls[0];
+  }
+}
+
+const protocols = {
+  previewImage: {
+    args: normalize
+  }
+};
+const todos = [];
 const canIUses = [];
 
 const CALLBACKS = ['success', 'fail', 'cancel', 'complete'];

packages/uni-mp-weixin/package.json

 {
 	"name": "@dcloudio/uni-mp-weixin",
-	"version": "0.0.950",
+	"version": "0.0.951",
 	"description": "uni-app mp-weixin",
 	"main": "dist/index.js",
 	"scripts": {