Make everything use active evals (#30)

* Add trace log level

* Use active eval to implement spdlog

* Split server/client active eval interfaces

Since all properties are *not* valid on both sides

* +200% fire resistance

* Implement exec using active evaluations

* Fully implement child process streams

* Watch impl, move child_process back to explicitly adding events

Automatically forwarding all events might be the right move, but wanna
think/discuss it a bit more because it didn't come out very cleanly.

* Would you like some args with that callback?

* Implement the rest of child_process using active evals

* Rampant memory leaks

Emit "kill" to active evaluations when client disconnects in order to
kill processes. Most likely won't be the final solution.

* Resolve some minor issues with output panel

* Implement node-pty with active evals

* Provide clearTimeout to vm sandbox

* Implement socket with active evals

* Extract some callback logic

Also remove some eval interfaces, need to re-think those.

* Implement net.Server and remainder of net.Socket using active evals

* Implement dispose for active evaluations

* Use trace for express requests

* Handle sending buffers through evaluation events

* Make event logging a bit more clear

* Fix some errors due to us not actually instantiating until connect/listen

* is this a commit message?

* We can just create the evaluator in the ctor

Not sure what I was thinking.

* memory leak for you, memory leak for everyone

* it's a ternary now

* Don't dispose automatically on close or error

The code may or may not be disposable at that point.

* Handle parsing buffers on the client side as well

* Remove unused protobuf

* Remove TypedValue

* Remove unused forkProvider and test

* Improve dispose pattern for active evals

* Socket calls close after error; no need to bind both

* Improve comment

* Comment is no longer wishy washy due to explicit boolean

* Simplify check for sendHandle and options

* Replace _require with __non_webpack_require__

Webpack will then replace this with `require` which we then provide to
the vm sandbox.

* Provide path.parse

* Prevent original-fs from loading

* Start with a pid of -1

vscode immediately checks the PID to see if the debug process launch
correctly, but of course we don't get the pid synchronously.

* Pass arguments to bootstrap-fork

* Fully implement streams

Was causing errors because internally the stream would set this.writing
to true and it would never become false, so subsequent messages would
never send.

* Fix serializing errors and streams emitting errors multiple times

* Was emitting close to data

* Fix missing path for spawned processes

* Move evaluation onDispose call

Now it's accurate and runs when the active evaluation has actually
disposed.

* Fix promisifying fs.exists

* Fix some active eval callback issues

* Patch existsSync in debug adapter

packages/server/src/cli.ts

@@ -27,6 +27,7 @@ export class Entry extends Command {
 		// Dev flags
 		"bootstrap-fork": flags.string({ hidden: true }),
 		env: flags.string({ hidden: true }),
+		args: flags.string({ hidden: true }),
 	};
 	public static args = [{
 		name: "workdir",
@@ -57,10 +58,6 @@ export class Entry extends Command {
 
 		const { args, flags } = this.parse(Entry);
 
-		if (flags.env) {
-			Object.assign(process.env, JSON.parse(flags.env));
-		}
-
 		const builtInExtensionsDir = path.join(buildDir || path.join(__dirname, ".."), "build/extensions");
 		if (flags["bootstrap-fork"]) {
 			const modulePath = flags["bootstrap-fork"];
@@ -69,6 +66,13 @@ export class Entry extends Command {
 				process.exit(1);
 			}
 
+			Object.assign(process.env, flags.env ? JSON.parse(flags.env) : {});
+			((flags.args ? JSON.parse(flags.args) : []) as string[]).forEach((arg, i) => {
+				// [0] contains the binary running the script (`node` for example) and
+				// [1] contains the script name, so the arguments come after that.
+				process.argv[i + 2] = arg;
+			});
+
 			return requireModule(modulePath, builtInExtensionsDir);
 		}
 
@@ -110,7 +114,7 @@ export class Entry extends Command {
 		const app = createApp((app) => {
 			app.use((req, res, next) => {
 				res.on("finish", () => {
-					logger.debug(`\u001B[1m${req.method} ${res.statusCode} \u001B[0m${req.url}`, field("host", req.hostname), field("ip", req.ip));
+					logger.trace(`\u001B[1m${req.method} ${res.statusCode} \u001B[0m${req.url}`, field("host", req.hostname), field("ip", req.ip));
 				});
 
 				next();