@yoyo-org/progressive-json/dist/src/adapters/fetch-adapter.js

Stream and render JSON data as it arrives - perfect for AI responses, large datasets, and real-time updates

/**
 * Default HTTP adapter using the built-in fetch API
 */
export class FetchAdapter {
    async stream(url, options = {}) {
        const response = await this.request(url, options);
        return response.stream;
    }
    async request(url, options = {}) {
        const fetchOptions = {
            method: options.method || 'GET',
            headers: options.headers,
            body: options.body,
            signal: options.signal,
        };
        // Handle timeout if specified
        if (options.timeout) {
            const controller = new AbortController();
            const timeoutId = setTimeout(() => controller.abort(), options.timeout);
            // Combine timeout signal with existing signal
            if (options.signal) {
                if (options.signal.aborted) {
                    clearTimeout(timeoutId);
                    throw new Error('Request was aborted');
                }
                options.signal.addEventListener('abort', () => {
                    clearTimeout(timeoutId);
                    controller.abort();
                });
            }
            fetchOptions.signal = controller.signal;
        }
        const response = await fetch(url, fetchOptions);
        if (!response.ok) {
            throw new Error(`HTTP Error: ${response.status} ${response.statusText}`);
        }
        if (!response.body) {
            throw new Error('No response body received');
        }
        // Convert Headers to plain object
        const headers = {};
        response.headers.forEach((value, key) => {
            headers[key] = value;
        });
        return {
            stream: response.body,
            status: response.status,
            statusText: response.statusText,
            headers,
            ok: response.ok,
        };
    }
}
// Export a default instance
export const fetchAdapter = new FetchAdapter();