@ceramicnetwork/common/lib/utils/fetch-json.js

Ceramic common types and utilities

import { mergeAbortSignals, TimedAbortSignal, abortable } from './abort-signal-utils.js';
const DEFAULT_FETCH_TIMEOUT = 60 * 1000 * 3;
export async function fetchJson(url, opts = {}) {
    if (opts.body) {
        const headers = { 'Content-Type': 'application/json', ...opts.headers };
        Object.assign(opts, {
            body: headers['Content-Type'] == 'application/json' ? JSON.stringify(opts.body) : opts.body,
            headers: headers,
        });
    }
    const timeoutLength = opts.timeout || DEFAULT_FETCH_TIMEOUT;
    const timedAbortSignal = new TimedAbortSignal(timeoutLength);
    const signal = opts.signal
        ? mergeAbortSignals([opts.signal, timedAbortSignal.signal])
        : timedAbortSignal.signal;
    const res = await abortable(signal, (abortSignal) => {
        return fetch(String(url), { ...opts, signal: abortSignal, credentials: 'include' });
    }).finally(() => timedAbortSignal.clear());
    if (!res.ok) {
        const text = await res.text();
        throw new Error(`HTTP request to '${url}' failed with status '${res.statusText}': ${text}`);
    }
    if (res.status === 204) {
        return {};
    }
    return res.json();
}
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