Add workaround for node 18 support

Author: skovhus

server/src/parser.ts

@@ -1,6 +1,15 @@
 import * as Parser from 'web-tree-sitter'
 
+const _global: any = global
+
 export async function initializeParser(): Promise<Parser> {
+  if (_global.fetch) {
+    // NOTE: temporary workaround for emscripten node 18 support.
+    // emscripten is used for compiling tree-sitter to wasm.
+    // https://github.com/emscripten-core/emscripten/issues/16915
+    delete _global.fetch
+  }
+
   await Parser.init()
   const parser = new Parser()