fix: unicode error in postman import (hoppscotch#5213)

Author: nivedin

packages/hoppscotch-common/src/helpers/import-export/import/postman.ts

@@ -147,6 +147,25 @@ const getHoppReqVariables = (
   }
 }
 
+// This regex is used to remove unsupported unicode characters from the response body which fails in Prisma
+// https://dba.stackexchange.com/questions/115029/unicode-error-with-u0000-on-copy-of-large-json-file-into-postgres
+const UNSUPPORTED_UNICODES_REGEX = /[\u0000]/g
+
+const getHoppResponseBody = (
+  body: string | ArrayBuffer | undefined
+): string => {
+  if (!body) return ""
+  if (typeof body === "string")
+    return body.replace(UNSUPPORTED_UNICODES_REGEX, "")
+  if (body instanceof ArrayBuffer) {
+    return new TextDecoder()
+      .decode(body)
+      .replace(UNSUPPORTED_UNICODES_REGEX, "")
+  }
+
+  return ""
+}
+
 const getHoppResponses = (
   responses: Item["responses"]
 ): HoppRESTRequestResponses => {
@@ -157,7 +176,7 @@ const getHoppResponses = (
         const res = {
           name: response.name,
           status: response.status,
-          body: response.body ?? "",
+          body: getHoppResponseBody(response.body),
           headers: getHoppReqHeaders(response.headers),
           code: response.code,
           originalRequest: makeHoppRESTResponseOriginalRequest({