GraphQL - Resolvers
You wrote this resolver:
function resolver(parent, args, context) { return info.fieldNodes; }. Why does this cause an error?You wrote this resolver: function resolver(parent, args, context) { return info.fieldNodes; }. Why does this cause an error?
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Check resolver parameters
The resolver only has three parameters: parent, args, context. It lacks the fourth parameterinfo.Step 2: Understand usage of
Sinceinfoinfois not declared, trying to use it causes a reference error.Final Answer:
The resolver is missing theinfoargument in its parameters. -> Option BQuick Check:
Missing info param = error [OK]
Quick Trick: Always include info as fourth parameter to use it [OK]
Common Mistakes:
- Forgetting to add info parameter
- Assuming info is global or in context
- Misordering resolver parameters
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