diff --git a/playground/build b/playground/build
index 8092c9d..861788c 100755
--- a/playground/build
+++ b/playground/build
@@ -1,8 +1,8 @@
-#!/bin/sh
+#!/bin/bash 
 mkdir -p public
 echo copy newt
-#cp ../lsp.js src/newt.js
-(cd .. && make lsp)
+(cd .. && make lsp.js)
+cp ../lsp.js src/newt.js
 echo build newt worker
 esbuild src/worker.ts --bundle --format=esm --platform=browser > public/worker.js
 esbuild src/frame.ts --bundle --format=esm --platform=browser > public/frame.js
diff --git a/playground/src/fs.ts b/playground/src/fs.ts
new file mode 100644
index 0000000..0140062
--- /dev/null
+++ b/playground/src/fs.ts
@@ -0,0 +1,6 @@
+import {shim} from './emul';
+
+// Shim was dumping stuff globally and we've shifted to imports, so I'm adapting it here for now.
+
+export const {readFileSync, writeFileSync, writeFile, writeSync, readSync } = shim.fs;
+export default {readFileSync, writeFileSync, writeFile, writeSync, readSync };
diff --git a/playground/src/newt.d.ts b/playground/src/newt.d.ts
new file mode 100644
index 0000000..a2166db
--- /dev/null
+++ b/playground/src/newt.d.ts
@@ -0,0 +1,7 @@
+import { Diagnostic, HoverResult, CodeAction } from './ipc'
+
+export function LSP_updateFile(name: string, content: string): any;
+export function LSP_checkFile(name: string): Diagnostic[];
+export function LSP_hoverInfo(name: string, row: number, col: number): HoverResult | boolean | null;
+export function LSP_codeActionInfo(name: string, row: number, col: number): CodeAction[] | null;
+export function LSP_compileJS(name: string): string;