[Solved] Which of the following is the correct syntax for a simple resolver function in GraphQL? — Ans: const resolver = (parent, args, context) => data; | GraphQL

GraphQL - Resolvers

Which of the following is the correct syntax for a simple resolver function in GraphQL?

Aconst resolver = (parent; args; context) => data;

Bconst resolver = { parent, args, context } => data;

Cconst resolver = (parent, args, context) => data;

Dconst resolver = (parent args context) => data;

Step-by-Step Solution

Solution:

Step 1: Recall JavaScript arrow function syntax
Arrow functions use parentheses for parameters separated by commas, e.g., (a, b, c) => result.
Step 2: Check each option's parameter syntax
const resolver = (parent, args, context) => data; uses commas correctly; A uses semicolons instead of commas; B uses braces instead of parentheses; D misses commas.
Final Answer:
const resolver = (parent, args, context) => data; -> Option C
Quick Check:
Arrow function params need commas = C [OK]

Quick Trick: Arrow function params need commas inside parentheses [OK]

Common Mistakes:

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Which of the following is the correct syntax for a simple resolver function in GraphQL?