@nestjs/graphql/dist/schema-builder/utils/get-interfaces-array.util.js

Nest - modern, fast, powerful node.js web framework (@graphql)

import { isFunction } from '@nestjs/common/utils/shared.utils.js';
function isNativeClass(fn) {
    return (typeof fn === 'function' &&
        /^class\s/.test(Function.prototype.toString.call(fn)));
}
export function getInterfacesArray(interfaces) {
    if (!interfaces) {
        return [];
    }
    if (Array.isArray(interfaces)) {
        return interfaces;
    }
    if (isFunction(interfaces) && !isNativeClass(interfaces)) {
        interfaces = interfaces();
    }
    return [].concat(interfaces);
}