Add convertToJSONSchemaCompatibleObject method

1 files changed, 7 insertions, 0 deletions

diff --git a/src/utils/schema_validator.ts b/src/utils/schema_validator.ts
index cf45d0343..9ff7259d9 100644
--- a/src/utils/schema_validator.ts
+++ b/src/utils/schema_validator.ts
@@ -5,6 +5,13 @@ import {tokenSchema} from '../schemas/token_schema';
 
 export class SchemaValidator {
     private validator: Validator;
+    // In order to validate a complex JS object using jsonschema, we must replace any complex
+    // sub-types (e.g BigNumber) with a simpler string represenation. Since BigNumber and other
+    // complex types implement the `toString` method, we can stringify the object and
+    // then parse it. The resultant object can then be checked using jsonschema.
+    public static convertToJSONSchemaCompatibleObject(obj: object): object {
+        return JSON.parse(JSON.stringify(obj));
+    }
     constructor() {
         this.validator = new Validator();
         this.validator.addSchema(tokenSchema, tokenSchema.id);