Fix(schema): Enforce type Number for "challengeType" (#17409)

* fix(schema): Enforce number types

* fix(seed): String challengeType -> Number challengeType

seed/challenges/08-coding-interview-prep/rosetta-code.json

@@ -3633,7 +3633,7 @@
         }
       ],
       "id": "5a7dad05be01840e1778a0d1",
-      "challengeType": "3",
+      "challengeType": 3,
       "releasedOn": "May 31, 2018",
       "files": {
         "indexjs": {
@@ -4404,7 +4404,7 @@
         }
       ],
       "id": "5a23c84252665b21eecc7e76",
-      "challengeType": "3",
+      "challengeType": 3,
       "releasedOn": "June 1, 2018",
       "files": {
         "indexjs": {

seed/schema/challengeSchema.js

@@ -4,7 +4,7 @@ Joi.objectId = require('joi-objectid')(Joi);
 const schema = Joi.object().keys({
   block: Joi.string(),
   blockId: Joi.objectId(),
-  challengeType: Joi.number().min(0).max(9).required(),
+  challengeType: Joi.number().integer().min(0).max(9).required().options({ convert: false }),
   checksum: Joi.number(),
   dashedName: Joi.string(),
   description: Joi.array().items(
@@ -40,7 +40,7 @@ const schema = Joi.object().keys({
   isPrivate: Joi.bool(),
   isRequired: Joi.bool(),
   name: Joi.string(),
-  order: Joi.number(),
+  order: Joi.number().options({ convert: false }),
   required: Joi.array().items(
     Joi.object().keys({
       link: Joi.string(),
@@ -53,8 +53,8 @@ const schema = Joi.object().keys({
     Joi.string().optional()
   ),
   superBlock: Joi.string(),
-  superOrder: Joi.number(),
-  suborder: Joi.number(),
+  superOrder: Joi.number().options({ convert: false }),
+  suborder: Joi.number().options({ convert: false }),
   tests: Joi.array().items(
     // public challenges
     Joi.object().keys({