feat: add hashline editing and TypeScript LSP

tests/lsp-config.test.ts

@@ -0,0 +1,54 @@
+import assert from "node:assert/strict";
+import { mkdtemp, readFile, rm } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import test from "node:test";
+
+import { deployBundleLspConfig, materializeBundleLspConfig } from "../extensions/lsp-config.ts";
+
+const RUNTIME = {
+	nodeBinary: "/runtime/node",
+	serverCliPath: "/bundle/typescript-language-server/lib/cli.mjs",
+};
+
+test("LSP config materializes the bundled TypeScript server command", () => {
+	const source = JSON.stringify({
+		version: 1,
+		servers: [
+			{ id: "typescript-language-server", bin: "typescript-language-server", args: ["--stdio"] },
+			{ id: "jdtls", bin: "jdtls", args: [] },
+		],
+	});
+	const config = JSON.parse(materializeBundleLspConfig(source, RUNTIME));
+
+	assert.deepEqual(config.servers[0], {
+		id: "typescript-language-server",
+		bin: RUNTIME.nodeBinary,
+		args: [RUNTIME.serverCliPath, "--stdio"],
+	});
+	assert.deepEqual(config.servers[1], { id: "jdtls", bin: "jdtls", args: [] });
+});
+
+test("LSP config deployment writes the materialized bundle config", async () => {
+	const agentDir = await mkdtemp(join(tmpdir(), "my-pi-lsp-"));
+	try {
+		deployBundleLspConfig(agentDir, RUNTIME);
+		const config = JSON.parse(await readFile(join(agentDir, "lsp.json"), "utf8"));
+		const server = config.servers.find((entry: { id?: string }) => entry.id === "typescript-language-server");
+
+		assert.equal(server.bin, RUNTIME.nodeBinary);
+		assert.deepEqual(server.args, [RUNTIME.serverCliPath, "--stdio"]);
+		assert.deepEqual(server.include, [
+			"**/*.ts",
+			"**/*.tsx",
+			"**/*.mts",
+			"**/*.cts",
+			"**/*.js",
+			"**/*.jsx",
+			"**/*.mjs",
+			"**/*.cjs",
+		]);
+	} finally {
+		await rm(agentDir, { recursive: true, force: true });
+	}
+});