diff --git a/package.json b/package.json
index fdbbe052..fe4a6710 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
-  "name": "vconsole",
-  "version": "3.15.1",
+  "name": "@wyatex/vconsole",
+  "version": "3.15.3",
   "description": "A lightweight, extendable front-end developer tool for mobile web page.",
   "homepage": "https://github.com/Tencent/vConsole",
   "files": [
@@ -10,6 +10,7 @@
     "README*"
   ],
   "main": "dist/vconsole.min.js",
+  "types": "dist/vconsole.min.d.ts",
   "typings": "dist/vconsole.min.d.ts",
   "scripts": {
     "build": "webpack --mode=production --progress --env target=web",
diff --git a/src/component/icon/iconCopy.svelte b/src/component/icon/iconCopy.svelte
index 9afc1701..ceb0ec51 100644
--- a/src/component/icon/iconCopy.svelte
+++ b/src/component/icon/iconCopy.svelte
@@ -9,7 +9,7 @@
   const copyOptions = { target: document.documentElement };
   let showSuc = false;
 
-  const onTapIcon = (e) => {
+  const onTapIcon = async (e) => {
     let text = content;
     if (tool.isFunction(handler)) {
       text = handler(content) || '';
@@ -25,7 +25,16 @@
         text = content;
       }
     }
-    copy(text, copyOptions);
+    if (
+      navigator.clipboard &&
+      typeof navigator.clipboard.writeText === "function"
+    ) {
+      try {
+        await navigator.clipboard.writeText(text);
+      } catch (error) {}
+    } else {
+      copy(text, copyOptions);
+    }
     showSuc = true;
     setTimeout(() => {
       showSuc = false;
diff --git a/src/lib/tool.ts b/src/lib/tool.ts
index e595bef5..bb19f8ac 100644
--- a/src/lib/tool.ts
+++ b/src/lib/tool.ts
@@ -206,7 +206,7 @@ const _safeJSONStringifyFlatValue = (value: any, maxLen = 0) => {
     if (maxLen > 0) {
       value = getStringWithinLength(value, maxLen);
     }
-    str += '"' + getVisibleText(value) + '"';
+    str += JSON.stringify(value);
   } else if (isSymbol(value)) {
     str += String(value).replace(/^Symbol\((.*)\)$/i, 'Symbol("$1")');
   } else if (isFunction(value)) {
@@ -265,7 +265,7 @@ const _safeJSONStringify = (obj, opt: ISafeJSONStringifyOption, _curDepth = 0) =
         if (isObject(key) || isArray(key) || isSymbol(key)) {
           opt.ret += Object.prototype.toString.call(key);
         } else if (isString(key) && opt.standardJSON) {
-          opt.ret += '"' + key + '"';
+          opt.ret += JSON.stringify(key);
         } else {
           opt.ret += key;
         }
diff --git a/src/log/log.model.ts b/src/log/log.model.ts
index 39089cc4..0018b55f 100644
--- a/src/log/log.model.ts
+++ b/src/log/log.model.ts
@@ -119,6 +119,7 @@ export class VConsoleLogModel extends VConsoleModel {
         this.origConsole[method] = window.console[method];
       });
       this.origConsole.time = window.console.time;
+      this.origConsole.timeLog = window.console.timeLog;
       this.origConsole.timeEnd = window.console.timeEnd;
       this.origConsole.clear = window.console.clear;
       this.origConsole.group = window.console.group;
@@ -153,6 +154,18 @@ export class VConsoleLogModel extends VConsoleModel {
       timeLog[label] = Date.now();
     }).bind(window.console);
 
+    window.console.timeLog = ((label: string = '', ...args) => {
+      const pre = timeLog[label];
+      let t = 0;
+      if (pre) {
+        t = Date.now() - pre;
+      }
+      this.addLog({
+        type: 'log',
+        origData: [`${label}: ${t}ms`, ...args],
+      });
+    }).bind(window.console);
+
     window.console.timeEnd = ((label: string = '') => {
       const pre = timeLog[label];
       let t = 0;
diff --git a/src/log/logTool.ts b/src/log/logTool.ts
index bc577253..b1810f5b 100644
--- a/src/log/logTool.ts
+++ b/src/log/logTool.ts
@@ -30,9 +30,10 @@ export const getValueTextAndType = (val: any, wrapString = true) => {
     text = getPreviewText(val);
   } else if (tool.isString(val)) {
     valueType = 'string';
-    text = tool.getVisibleText(val);
     if (wrapString) {
-      text = '"' + text + '"';
+      text = JSON.stringify(val);
+    } else {
+      text = tool.getVisibleText(val);
     }
   } else if (tool.isNumber(val)) {
     valueType = 'number';
diff --git a/src/network/fetch.proxy.ts b/src/network/fetch.proxy.ts
index 4c1089f1..d23a25d7 100644
--- a/src/network/fetch.proxy.ts
+++ b/src/network/fetch.proxy.ts
@@ -78,10 +78,13 @@ export class ResponseProxyHandler<T extends Response> implements ProxyHandler<T>
           if (!readerReceivedValue) {
             readerReceivedValue = new Uint8Array(result.value);
           } else {
-            const newValue = new Uint8Array(readerReceivedValue.length + result.value.length);
-            newValue.set(readerReceivedValue);
-            newValue.set(result.value, readerReceivedValue.length);
-            readerReceivedValue = newValue;
+            // result.value may be undefined when result.done is true
+            if (result.value) {
+              const newValue = new Uint8Array(readerReceivedValue.length + result.value.length);
+              newValue.set(readerReceivedValue);
+              newValue.set(result.value, readerReceivedValue.length);
+              readerReceivedValue = newValue;
+            }
           }
           this.item.endTime = Date.now();
           this.item.costTime = this.item.endTime - (this.item.startTime || this.item.endTime);
diff --git a/src/network/network.svelte b/src/network/network.svelte
index 79c25cab..5efd7edd 100644
--- a/src/network/network.svelte
+++ b/src/network/network.svelte
@@ -113,7 +113,7 @@
               <div class="vc-table-col vc-table-col-4 vc-table-col-value vc-max-height-line">{req.startTimeText}</div>
             </div>
           </div>
-          {#if (req.requestHeader !== null)}
+          {#if (req.requestHeader)}
           <div>
             <dl class="vc-table-row vc-left-border">
               <dt class="vc-table-col vc-table-col-title">
diff --git a/src/storage/storage.svelte b/src/storage/storage.svelte
index b9dd214f..6031a13e 100644
--- a/src/storage/storage.svelte
+++ b/src/storage/storage.svelte
@@ -41,10 +41,10 @@
     await model.removeItem(key);
   };
   const onTapSave = async (key: string) => {
+    model.setItem(editingKey, editingVal); // set value anyway
     if (editingKey !== key) {
       await model.removeItem(key); // dirty key
     }
-    model.setItem(editingKey, editingVal); // set value anyway
     resetEditState(); // reset editing status
   };
   const onTapEdit = async (key: string, value: string, i: number) => {