@graphql-tools/utils/esm/stub.js

Common package containing utils and types for GraphQL tools

import { GraphQLInputObjectType, GraphQLInterfaceType, GraphQLList, GraphQLNonNull, GraphQLObjectType, GraphQLString, Kind, specifiedScalarTypes, } from 'graphql';
export function createNamedStub(name, type) {
    let constructor;
    if (type === 'object') {
        constructor = GraphQLObjectType;
    }
    else if (type === 'interface') {
        constructor = GraphQLInterfaceType;
    }
    else {
        constructor = GraphQLInputObjectType;
    }
    return new constructor({
        name,
        fields: {
            _fake: {
                type: GraphQLString,
            },
        },
    });
}
function getSpecifiedScalar(name) {
    return specifiedScalarTypes.find(type => type.name === name);
}
export function createStub(node, type) {
    switch (node.kind) {
        case Kind.LIST_TYPE:
            return new GraphQLList(createStub(node.type, type));
        case Kind.NON_NULL_TYPE:
            // FIXME: graphql@17 type issue
            return new GraphQLNonNull(createStub(node.type, type));
        default: {
            const specified = getSpecifiedScalar(node.name.value);
            if (specified) {
                return specified;
            }
            if (type === 'output') {
                return createNamedStub(node.name.value, 'object');
            }
            return createNamedStub(node.name.value, 'input');
        }
    }
}
export function isNamedStub(type) {
    if ('getFields' in type) {
        const fields = type.getFields();
        // eslint-disable-next-line no-unreachable-loop
        for (const fieldName in fields) {
            const field = fields[fieldName];
            return field.name === '_fake';
        }
    }
    return false;
}
export function getBuiltInForStub(type) {
    return getSpecifiedScalar(type.name) ?? type;
}