https://atheros.ai/blog/graphql-scalars-and-their-input-and-result-coercion

task_queries.ts

import {
    GraphQLList,
    GraphQLNonNull,
} from 'graphql';
import { getTasks } from '../../operations/tasks-operations';
import Task from './TaskType';
const TaskQueries = {
    tasks: {
        type: new GraphQLNonNull(new GraphQLList(Task)),
        resolve: () => getTasks(),
    },
};
export default TaskQueries;