feat: vscode extension setup

esbuild.js

@@ -0,0 +1,55 @@
+const esbuild = require("esbuild");
+
+const production = process.argv.includes("--production");
+const watch = process.argv.includes("--watch");
+
+/**
+ * @type {import("esbuild").Plugin}
+ */
+const esbuildProblemMatcherPlugin = {
+	name: "esbuild-problem-matcher",
+
+	setup(build) {
+		build.onStart(() => {
+			console.log("[watch] build started");
+		});
+		build.onEnd((result) => {
+			result.errors.forEach(({ text, location }) => {
+				console.error(`✘ [ERROR] ${text}`);
+				console.error(`    ${location.file}:${location.line}:${location.column}:`);
+			});
+			console.log("[watch] build finished");
+		});
+	},
+};
+
+async function main() {
+	const ctx = await esbuild.context({
+		entryPoints: [
+			"src/extension.ts"
+		],
+		bundle: true,
+		format: "cjs",
+		minify: production,
+		sourcemap: !production,
+		sourcesContent: false,
+		platform: "node",
+		outfile: "dist/extension.js",
+		external: ["vscode"],
+		logLevel: "silent",
+		plugins: [
+			esbuildProblemMatcherPlugin,
+		],
+	});
+	if (watch) {
+		await ctx.watch();
+	} else {
+		await ctx.rebuild();
+		await ctx.dispose();
+	}
+}
+
+main().catch(e => {
+	console.error(e);
+	process.exit(1);
+});