[VSC-6] Add benchmark init

package.json

@@ -228,6 +228,7 @@
         "package": "npm run generate && vsce package && npm test && npm run --silent lint",
         "publish": "vsce publish",
         "compile:benchmark-did-change": "npm run compile && esbuild ./src/server/bench/benchmark-did-change.ts --bundle --outfile=out/benchmark-did-change.js --external:vscode --format=cjs --platform=node --minify",
+        "compile:benchmark-init": "npm run compile && esbuild ./src/server/bench/benchmark-init.ts --bundle --outfile=out/benchmark-init.js --external:vscode --format=cjs --platform=node --minify",
         "compile:dev": "npm run compile:pre && run-p compile:snippets compile:formatter compile:rust_ && run-p compile:motoko:dev",
         "compile:motoko:dev": "esbuild motoko --bundle --outfile=out/motoko.js --format=cjs --platform=node --minify=false --sourcemap=inline && shx cp -r src/server/compiler out/compiler",
         "compile:benchmark:dev": "npm run compile:dev && esbuild ./src/server/bench/benchmark.ts --bundle --outfile=out/benchmark.js --external:vscode --format=cjs --platform=node --minify=false --sourcemap=inline"

src/server/bench/benchmark-init.ts

@@ -0,0 +1,22 @@
+import { InitializeResult } from 'vscode-languageserver/node';
+import {
+    clientInitParams,
+    createBenchmark,
+    logInitializationTiming,
+    Setup,
+} from './helpers';
+
+createBenchmark('init', async (setup: Setup) => {
+    const before = performance.now();
+
+    setup.client.onNotification('custom/initialized', (_) =>
+        logInitializationTiming(before),
+    );
+
+    await setup.benchmark<InitializeResult>(
+        'initialize',
+        clientInitParams(setup.rootUri),
+    );
+
+    await setup.sendNotification('initialized', {});
+});