ccxt/js/src/static_dependencies/node-fetch/utils/is-redirect.js

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const redirectStatus = new Set([301, 302, 303, 307, 308]);
/**
 * Redirect code matching
 *
 * @param {number} code - Status code
 * @return {boolean}
 */
export const isRedirect = code => {
    return redirectStatus.has(code);
};