Improved support for `debug-adapter-protocol` (#4186)

* Improve support for \`debug-adapter-protocol\`

* More improvements, fix formatting in debug console

* Fix attaching

* Prepare for source maps

* Start of source map support, breakpoints work

* Source map support

* add some package.jsons

* wip

* Update package.json

* More fixes

* Make source maps safer if exception occurs

* Check bun version if it fails

* Fix console.log formatting

* Fix source maps partly

* More source map fixes

* Prepare for extension

* watch mode with dap

* Improve preview code

* Prepare for extension 2

---------

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

1 files changed, 62 insertions, 0 deletions

diff --git a/packages/bun-debug-adapter-protocol/debugger/preview.test.ts b/packages/bun-debug-adapter-protocol/debugger/preview.test.ts
new file mode 100644
index 000000000..666913719
--- /dev/null
+++ b/packages/bun-debug-adapter-protocol/debugger/preview.test.ts
@@ -0,0 +1,62 @@
+import { beforeAll, afterAll, test, expect } from "bun:test";
+import type { JSC } from "../../bun-inspector-protocol";
+import { WebSocketInspector } from "../../bun-inspector-protocol";
+import type { PipedSubprocess } from "bun";
+import { spawn } from "bun";
+import { remoteObjectToString } from "./preview";
+
+let subprocess: PipedSubprocess | undefined;
+let objects: JSC.Runtime.RemoteObject[] = [];
+
+beforeAll(async () => {
+  subprocess = spawn({
+    cwd: import.meta.dir,
+    cmd: [process.argv0, "--inspect-wait=0", "fixtures/preview.js"],
+    stdout: "pipe",
+    stderr: "pipe",
+    stdin: "pipe",
+  });
+  const decoder = new TextDecoder();
+  let url: URL;
+  for await (const chunk of subprocess!.stdout) {
+    const text = decoder.decode(chunk);
+    if (text.includes("ws://")) {
+      url = new URL(/(ws:\/\/.*)/.exec(text)![0]);
+      break;
+    }
+  }
+  objects = await new Promise((resolve, reject) => {
+    const inspector = new WebSocketInspector({
+      url,
+      listener: {
+        ["Inspector.connected"]: () => {
+          inspector.send("Inspector.enable");
+          inspector.send("Runtime.enable");
+          inspector.send("Console.enable");
+          inspector.send("Debugger.enable");
+          inspector.send("Debugger.resume");
+          inspector.send("Inspector.initialized");
+        },
+        ["Inspector.disconnected"]: error => {
+          reject(error);
+        },
+        ["Console.messageAdded"]: ({ message }) => {
+          const { parameters } = message;
+          resolve(parameters!);
+          inspector.close();
+        },
+      },
+    });
+    inspector.start();
+  });
+});
+
+afterAll(() => {
+  subprocess?.kill();
+});
+
+test("remoteObjectToString", () => {
+  for (const object of objects) {
+    expect(remoteObjectToString(object)).toMatchSnapshot();
+  }
+});