refactor: bring js-sandbox project to the monorepo

packages/hoppscotch-js-sandbox/src/utils.ts

@@ -0,0 +1,32 @@
+import { Either, left, right } from "fp-ts/lib/Either";
+import * as QuickJS from "quickjs-emscripten";
+
+export function marshalObjectToVM(vm: QuickJS.QuickJSVm, obj: object): Either<string, QuickJS.QuickJSHandle> {
+  let jsonString
+
+  try {
+    jsonString = JSON.stringify(obj)
+  } catch (e) {
+    return left("Marshaling stringification failed")
+  }
+
+  const vmStringHandle = vm.newString(jsonString)
+
+  const jsonHandle = vm.getProp(vm.global, "JSON")
+  const parseFuncHandle = vm.getProp(jsonHandle, "parse")
+
+  const parseResultHandle = vm.callFunction(parseFuncHandle, vm.undefined, vmStringHandle)
+
+  if (parseResultHandle.error) {
+    parseResultHandle.error.dispose()
+    return left("Marshaling failed")
+  }
+
+  const resultHandle = vm.unwrapResult(parseResultHandle)
+
+  vmStringHandle.dispose()
+  parseFuncHandle.dispose()
+  jsonHandle.dispose()
+  
+  return right(resultHandle)
+}