diff --git a/blog-koa2/package-lock.json b/blog-koa2/package-lock.json
index 22866ba..168cf8b 100644
--- a/blog-koa2/package-lock.json
+++ b/blog-koa2/package-lock.json
@@ -1090,7 +1090,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -1111,12 +1112,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -1131,17 +1134,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -1258,7 +1264,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -1270,6 +1277,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -1284,6 +1292,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -1291,12 +1300,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -1315,6 +1326,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -1395,7 +1407,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -1407,6 +1420,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -1492,7 +1506,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -1528,6 +1543,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -1547,6 +1563,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -1590,12 +1607,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -2788,29 +2807,41 @@
         "pug-strip-comments": "^1.0.3"
       }
     },
-    "pug-attrs": {
-      "version": "2.0.3",
-      "resolved": "http://registry.npm.taobao.org/pug-attrs/download/pug-attrs-2.0.3.tgz",
-      "integrity": "sha1-owlflw5kFR972tlX7vVftdeQXRU=",
-      "requires": {
-        "constantinople": "^3.0.1",
-        "js-stringify": "^1.0.1",
-        "pug-runtime": "^2.0.4"
-      }
-    },
     "pug-code-gen": {
-      "version": "2.0.1",
-      "resolved": "http://registry.npm.taobao.org/pug-code-gen/download/pug-code-gen-2.0.1.tgz",
-      "integrity": "sha1-CVHsgyJddNjPxHan+Zolm199BQw=",
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/pug-code-gen/-/pug-code-gen-2.0.3.tgz",
+      "integrity": "sha512-r9sezXdDuZJfW9J91TN/2LFbiqDhmltTFmGpHTsGdrNGp3p4SxAjjXEfnuK2e4ywYsRIVP0NeLbSAMHUcaX1EA==",
       "requires": {
-        "constantinople": "^3.0.1",
+        "constantinople": "^3.1.2",
         "doctypes": "^1.1.0",
         "js-stringify": "^1.0.1",
-        "pug-attrs": "^2.0.3",
-        "pug-error": "^1.3.2",
-        "pug-runtime": "^2.0.4",
+        "pug-attrs": "^2.0.4",
+        "pug-error": "^1.3.3",
+        "pug-runtime": "^2.0.5",
         "void-elements": "^2.0.1",
         "with": "^5.0.0"
+      },
+      "dependencies": {
+        "pug-attrs": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/pug-attrs/-/pug-attrs-2.0.4.tgz",
+          "integrity": "sha512-TaZ4Z2TWUPDJcV3wjU3RtUXMrd3kM4Wzjbe3EWnSsZPsJ3LDI0F3yCnf2/W7PPFF+edUFQ0HgDL1IoxSz5K8EQ==",
+          "requires": {
+            "constantinople": "^3.0.1",
+            "js-stringify": "^1.0.1",
+            "pug-runtime": "^2.0.5"
+          }
+        },
+        "pug-error": {
+          "version": "1.3.3",
+          "resolved": "https://registry.npmjs.org/pug-error/-/pug-error-1.3.3.tgz",
+          "integrity": "sha512-qE3YhESP2mRAWMFJgKdtT5D7ckThRScXRwkfo+Erqga7dyJdY3ZquspprMCj/9sJ2ijm5hXFWQE/A3l4poMWiQ=="
+        },
+        "pug-runtime": {
+          "version": "2.0.5",
+          "resolved": "https://registry.npmjs.org/pug-runtime/-/pug-runtime-2.0.5.tgz",
+          "integrity": "sha512-P+rXKn9un4fQY77wtpcuFyvFaBww7/91f3jHa154qU26qFAnOe6SW1CbIDcxiG5lLK9HazYrMCCuDvNgDQNptw=="
+        }
       }
     },
     "pug-error": {