修复mock拦截下载请求不显示进度条问题

.gitignore

@@ -2,8 +2,9 @@ bak
 .DS_Store
 .*.swp
 .idea
+.vscode
 node_modules
 bower_components
 coverage
 PLAN.md
-npm-debug.log
+npm-debug.log

dist/mock.js

@@ -8162,6 +8162,19 @@ return /******/ (function(modules) { // webpackBootstrap
 	        return event
 	    }
 	}
+	try {
+	    new window.ProgressEvent('process')
+	} catch (exception) {
+	    // 如果低版本的浏览器不支持
+	    window.ProgressEvent = function(type, nativeEvent) {
+	        var progressEvent = document.createEvent('CustomEvent')
+	        progressEvent.initCustomEvent(type, nativeEvent.cancelBubble, nativeEvent.cancelable, null)
+	        progressEvent.lengthComputable = nativeEvent.lengthComputable;
+	        progressEvent.loaded = nativeEvent.loaded;
+	        progressEvent.total = nativeEvent.total;
+	        return progressEvent
+	    }
+	}
 
 	var XHR_STATES = {
 	    // The object has been constructed.
@@ -8300,8 +8313,13 @@ return /******/ (function(modules) { // webpackBootstrap
 	                    that[XHR_RESPONSE_PROPERTIES[i]] = xhr[XHR_RESPONSE_PROPERTIES[i]]
 	                } catch (e) {}
 	            }
-	            // 触发 MockXMLHttpRequest 上的同名事件
-	            that.dispatchEvent(new Event(event.type /*, false, false, that*/ ))
+	            if (event.type === 'progress' && event.lengthComputable) {
+	                // 单独处理下载事件，下载的文件计算完成时发布原生的ProcessEvent
+	                that.dispatchEvent(new window.ProgressEvent(event.type, event))
+	            } else {
+	                // 触发 MockXMLHttpRequest 上的同名事件
+	                that.dispatchEvent(new Event(event.type /*, false, false, that*/ ))
+	            }
 	        }
 
 	        // 如果未找到匹配的数据模板，则采用原生 XHR 发送请求。
@@ -8476,6 +8494,15 @@ return /******/ (function(modules) { // webpackBootstrap
 	        if (this[ontype]) this[ontype](event)
 	    }
 	})
+	// upload EventTarget
+	Util.extend(MockXMLHttpRequest.prototype.upload, {
+	    addEventListener: function addEventListener() {
+	    },
+	    removeEventListener: function removeEventListener() {
+	    },
+	    dispatchEvent: function dispatchEvent() {
+	    }
+	})
 
 	// Inspired by jQuery
 	function createNativeXMLHttpRequest() {
@@ -8537,6 +8564,7 @@ return /******/ (function(modules) { // webpackBootstrap
 
 	module.exports = MockXMLHttpRequest
 
+
 /***/ })
 /******/ ])
 });

src/mock/xhr/xhr.js

@@ -66,6 +66,19 @@ try {
         return event
     }
 }
+try {
+    new window.ProgressEvent('process')
+} catch (exception) {
+    // 如果低版本的浏览器不支持
+    window.ProgressEvent = function(type, nativeEvent) {
+        var progressEvent = document.createEvent('CustomEvent')
+        progressEvent.initCustomEvent(type, nativeEvent.cancelBubble, nativeEvent.cancelable, null)
+        progressEvent.lengthComputable = nativeEvent.lengthComputable;
+        progressEvent.loaded = nativeEvent.loaded;
+        progressEvent.total = nativeEvent.total;
+        return progressEvent
+    }
+}
 
 var XHR_STATES = {
     // The object has been constructed.
@@ -204,8 +217,13 @@ Util.extend(MockXMLHttpRequest.prototype, {
                     that[XHR_RESPONSE_PROPERTIES[i]] = xhr[XHR_RESPONSE_PROPERTIES[i]]
                 } catch (e) {}
             }
-            // 触发 MockXMLHttpRequest 上的同名事件
-            that.dispatchEvent(new Event(event.type /*, false, false, that*/ ))
+            if (event.type === 'progress' && event.lengthComputable) {
+                // 单独处理下载事件，下载的文件计算完成时发布原生的ProcessEvent
+                that.dispatchEvent(new window.ProgressEvent(event.type, event))
+            } else {
+                // 触发 MockXMLHttpRequest 上的同名事件
+                that.dispatchEvent(new Event(event.type /*, false, false, that*/ ))
+            }
         }
 
         // 如果未找到匹配的数据模板，则采用原生 XHR 发送请求。
@@ -380,6 +398,15 @@ Util.extend(MockXMLHttpRequest.prototype, {
         if (this[ontype]) this[ontype](event)
     }
 })
+// upload EventTarget
+Util.extend(MockXMLHttpRequest.prototype.upload, {
+    addEventListener: function addEventListener() {
+    },
+    removeEventListener: function removeEventListener() {
+    },
+    dispatchEvent: function dispatchEvent() {
+    }
+})
 
 // Inspired by jQuery
 function createNativeXMLHttpRequest() {
@@ -439,4 +466,4 @@ function convert(item, options) {
         item.template(options) : MockXMLHttpRequest.Mock.mock(item.template)
 }
 
-module.exports = MockXMLHttpRequest
+module.exports = MockXMLHttpRequest