添加jsdiff

package-lock.json

@@ -7,6 +7,11 @@
       "resolved": "https://registry.npmjs.org/at-js/-/at-js-1.2.12.tgz",
       "integrity": "sha1-X26O1gXopRmgXn0lMKSgKaxtPCU="
     },
+    "diff": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-5.0.0.tgz",
+      "integrity": "sha512-/VTCrvm5Z0JGty/BWHljh+BAiw3IK+2j87NGMu8Nwc/f48WoDAC395uomO9ZD117ZOBaHmkX1oyLvkVM/aIT3w=="
+    },
     "highcharts": {
       "version": "9.0.1",
       "resolved": "https://registry.npmjs.org/highcharts/-/highcharts-9.0.1.tgz",

package.json

@@ -3,6 +3,7 @@
   "lockfileVersion": 1,
   "dependencies": {
     "at-js": "^1.2.12",
+    "diff": "^5.0.0",
     "highcharts": "^9.0.1",
     "marked": "^2.0.3",
     "tributejs": "^5.1.3"