got/dist/source/core/utils/is-non-replayable-body.js

Human-friendly and powerful HTTP request library for Node.js

import is from '@sindresorhus/is';
// A body is replayable only if iterating it again restarts from the beginning.
// Node streams, Web `ReadableStream`s, and iterator objects are consumed by an upload, so they cannot be replayed on a redirect or retry.
export default function isNonReplayableBody(body) {
    // Creating an iterator can open resources or throw. Only create it when actually sending the body.
    return is.nodeStream(body)
        || body instanceof ReadableStream
        || (is.object(body) && is.function(body.next));
}