@omnigraph/json-schema/esm/scalars.js

This package generates GraphQL Schema from JSON Schema and sample JSON request and responses. You can define your root field endpoints like below in your GraphQL Config for example;

import { GraphQLScalarType } from 'graphql';
export const GraphQLFile = new GraphQLScalarType({
    name: 'File',
    description: 'The `File` scalar type represents a file upload.',
    extensions: {
        codegenScalarType: 'File',
    },
});
export const GraphQLVoid = new GraphQLScalarType({
    name: 'Void',
    description: 'Represents empty values',
    serialize: () => '',
    extensions: {
        codegenScalarType: 'void',
    },
});
export const ObjMapScalar = new GraphQLScalarType({
    name: 'ObjMap',
    serialize: value => JSON.stringify(value),
    parseValue: value => JSON.parse(value.toString()),
    parseLiteral: ast => {
        if (ast.kind === 'StringValue') {
            return JSON.parse(ast.value);
        }
        return null;
    },
});