Throttle showDecoration (#66)

package.json

@@ -39,9 +39,13 @@
     "test": "node ./out/test/runTest.js",
     "deploy": "vsce publish"
   },
+  "dependencies": {
+    "throttle-debounce": "^5.0.0"
+  },
   "devDependencies": {
     "@types/mocha": "^10.0.6",
     "@types/node": "20.x",
+    "@types/throttle-debounce": "^5.0.2",
     "@types/vscode": "^1.78.0",
     "@typescript-eslint/eslint-plugin": "^7.4.0",
     "@typescript-eslint/parser": "^7.4.0",
@@ -52,4 +56,4 @@
     "mocha": "^10.4.0",
     "typescript": "^5.4.3"
   }
-}
+}

src/extension.ts

@@ -1,5 +1,6 @@
 import * as vscode from "vscode";
 import * as cp from "child_process";
+import { throttle } from "throttle-debounce";
 
 import {
   parseGitBlamePorcelain,
@@ -74,13 +75,14 @@ function showDecoration(e: { readonly textEditor: vscode.TextEditor }) {
 
 export function activate(context: vscode.ExtensionContext) {
   console.log('Extension "git-line-blame" has activated.');
+  let showDecorationThrottled = throttle(100, showDecoration);
   context.subscriptions.push(
-    vscode.window.onDidChangeTextEditorSelection(showDecoration),
-    vscode.window.onDidChangeTextEditorVisibleRanges(showDecoration),
+    vscode.window.onDidChangeTextEditorSelection(showDecorationThrottled),
+    vscode.window.onDidChangeTextEditorVisibleRanges(showDecorationThrottled),
     vscode.workspace.onDidSaveTextDocument((e) => {
       const editor = vscode.window.activeTextEditor;
       if (editor !== undefined && e === editor.document) {
-        showDecoration({ textEditor: editor });
+        showDecorationThrottled({ textEditor: editor });
       }
     })
   );