refactor: lazy compute codegen code and error handling

packages/hoppscotch-app/components/http/CodegenModal.vue

@@ -121,6 +121,8 @@ const requestCode = computed(() => {
     getCurrentEnvironment()
   )
 
+  if (!props.show) return ""
+
   const result = generateCode(codegenType.value, effectiveRequest)
 
   if (O.isSome(result)) {

packages/hoppscotch-app/helpers/new-codegen/index.ts

@@ -1,6 +1,7 @@
 import HTTPSnippet from "httpsnippet"
 import { HoppRESTRequest } from "@hoppscotch/data"
 import * as O from "fp-ts/Option"
+import * as E from "fp-ts/Either"
 import { pipe } from "fp-ts/function"
 import { buildHarRequest } from "./har"
 
@@ -200,16 +201,24 @@ export const generateCode = (
   const codegenInfo = CodegenDefinitions.find((v) => v.name === codegen)!
 
   return pipe(
-    O.of(
+    E.tryCatch(
-      // Returns a string if valid, false if not
+      () =>
         new HTTPSnippet({
           ...buildHarRequest(req),
         }).convert(codegenInfo.lang, codegenInfo.mode, {
           indent: "  ",
-      })
+        }),
+      (e) => e
     ),
 
     // Only allow string output to pass through, else none
-    O.chain(O.fromPredicate((val): val is string => typeof val === "string"))
+    E.chainW(
+      E.fromPredicate(
+        (val): val is string => typeof val === "string",
+        () => "code generator failed" as const
+      )
+    ),
+
+    O.fromEither
   )
 }