fix

package.json

@@ -18,7 +18,7 @@
     "core-js": "^3.6.5",
     "express": "^4.17.1",
     "express-http-proxy": "^1.6.2",
-    "faker": "^4.1.0",
+    "faker": "^5.1.0",
     "knex": "^0.21.2",
     "lodash.chunk": "^4.2.0",
     "sqlite3": "^5.0.0",
@@ -26,7 +26,7 @@
     "vue-chartjs": "^3.5.0",
     "vue-router": "^3.2.0",
     "vuex": "^3.4.0",
-    "yargs": "^15.4.1"
+    "yargs": "^16.1.0"
   },
   "devDependencies": {
     "@sapphirecode/eslint-config": "^2.1.16",
@@ -38,7 +38,7 @@
     "@vue/cli-service": "^4.4.0",
     "babel-eslint": "^10.1.0",
     "eslint": "^7.5.0",
-    "eslint-plugin-vue": "^6.2.2",
+    "eslint-plugin-vue": "^7.1.0",
     "vue-template-compiler": "^2.6.11"
   },
   "license": "GPL-3.0-or-later",

src/components/ChartView.vue

@@ -33,15 +33,19 @@ export default {
           yAxisID:         index,
           borderColor:     y.color,
           backgroundColor: y.fill,
-          spanGaps:        true
+          spanGaps:        true,
+          lineTension:     0
         };
         let last = null;
         for (let i = 0; i < this.data.length; i++) {
           const data = this.data[i];
           const val = resolve_data (data, y.field);
+          const next = this.data.length - 1 === i
+            ? val
+            : resolve_data (this.data[i + 1], y.field);
           if (
             !this.remove_duplicates
-            || last !== val
+            || last !== val || next !== val
             || this.data.length - 1 === i
           )
             res.data.push (val);