@juspay/neurolink/dist/utils/retryAfter.js

The pipe layer of an AI nervous system: one interface connecting provider neurons to your application, across three inference types — generate, stream and decide. `decide` returns typed, calibrated judgements from a non-generative model (~400ms, ~$0.00002

function getHeader(headers, headerName) {
    if ("get" in headers && typeof headers.get === "function") {
        return headers.get(headerName);
    }
    const normalizedHeaderName = headerName.toLowerCase();
    for (const [name, value] of Object.entries(headers)) {
        if (name.toLowerCase() === normalizedHeaderName) {
            return value;
        }
    }
    return null;
}
/**
 * Parse standard and commonly used rate-limit response headers.
 *
 * @returns The requested delay in milliseconds, or undefined when the
 * response does not provide a usable rate-limit delay.
 */
export function parseRetryAfterMs(headers) {
    const retryAfter = getHeader(headers, "Retry-After");
    if (retryAfter) {
        const seconds = parseInt(retryAfter, 10);
        if (!Number.isNaN(seconds)) {
            return Math.max(0, seconds * 1000);
        }
        const retryDate = new Date(retryAfter);
        if (!Number.isNaN(retryDate.getTime())) {
            return Math.max(0, retryDate.getTime() - Date.now());
        }
    }
    const rateLimitReset = getHeader(headers, "X-RateLimit-Reset");
    if (rateLimitReset) {
        const resetTimestamp = parseInt(rateLimitReset, 10);
        if (!Number.isNaN(resetTimestamp)) {
            const resetTime = resetTimestamp > 1e12 ? resetTimestamp : resetTimestamp * 1000;
            return Math.max(0, resetTime - Date.now());
        }
    }
    if (getHeader(headers, "X-RateLimit-Remaining") === "0") {
        return 1000;
    }
    return undefined;
}