graphql/utilities/typeFromAST.mjs

A Query Language and Runtime which can target any service.

import { Kind } from "../language/kinds.mjs";
import { GraphQLList, GraphQLNonNull } from "../type/definition.mjs";
export function typeFromAST(schema, typeNode) {
    switch (typeNode.kind) {
        case Kind.LIST_TYPE: {
            const innerType = typeFromAST(schema, typeNode.type);
            return innerType && new GraphQLList(innerType);
        }
        case Kind.NON_NULL_TYPE: {
            const innerType = typeFromAST(schema, typeNode.type);
            return innerType && new GraphQLNonNull(innerType);
        }
        case Kind.NAMED_TYPE:
            return schema.getType(typeNode.name.value);
    }
}
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