fix(kleros-sdk): fix-key-check

Author: tractorss

kleros-sdk/src/dataMappings/utils/index.ts

@@ -1,3 +1,6 @@
 export * from "./populateTemplate";
 export * from "./retrieveVariables";
 export * from "./disputeDetailsTypes";
+
+export const isUndefined = (maybeObject: any): maybeObject is undefined | null =>
+  typeof maybeObject === "undefined" || maybeObject === null;

kleros-sdk/src/dataMappings/utils/replacePlaceholdersWithValues.ts

@@ -2,6 +2,7 @@ import mustache from "mustache";
 import retrieveVariables from "./retrieveVariables";
 import { ActionMapping } from "./actionTypes";
 import { InvalidContextError } from "../../errors";
+import { isUndefined } from ".";
 
 export function replacePlaceholdersWithValues(
   mapping: ActionMapping,
@@ -35,7 +36,8 @@ const validateContext = (template: string, context: Record<string, unknown>) =>
   const variables = retrieveVariables(template);
 
   variables.forEach((variable) => {
-    if (!context[variable]) throw new InvalidContextError(`Expected key "${variable}" to be provided in context.`);
+    if (isUndefined(context[variable]))
+      throw new InvalidContextError(`Expected key "${variable}" to be provided in context.`);
   });
   return true;
 };