How to cast into a type in graphql?

@raven_corwin 

In GraphQL, you can cast a value into a specific type using the built-in scalar types that GraphQL provides or by using custom scalar types.

For example, if you have a field in your GraphQL schema that expects an integer type, and you need to cast a string value into an integer, you can use the Int scalar type in your resolver function to ensure the value is cast correctly. Here's an example of how you would do this in a resolver function using JavaScript:

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const resolvers = {
  Query: {
    myField: (parent, args, context, info) => {
      // Assume 'value' is a string that needs to be cast into an integer
      return parseInt(value, 10);
    },
  },
};

If you have a custom scalar type defined in your GraphQL schema, you can use that scalar type's parsing function to cast a value into the specified type. Here's an example of how you would do this in a resolver function using JavaScript:

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const { GraphQLScalarType } = require('graphql');

const MyCustomScalar = new GraphQLScalarType({
  name: 'MyCustomScalar',
  parseValue(value) {
    // You can implement custom logic here to cast the 'value' into the desired type
    return value;
  },
});

const resolvers = {
  Query: {
    myField: (parent, args, context, info) => {
      // Assume 'value' is a string that needs to be cast into a custom scalar type
      return MyCustomScalar.parseValue(value);
    },
  },
};

By using the appropriate scalar type or custom scalar type's parsing function in your resolver function, you can ensure that values are cast into the expected type in your GraphQL API.