got/dist/source/core/utils/get-body-size.js

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

import { promisify } from 'node:util';
import is from '@sindresorhus/is';
import isFormData from './is-form-data.js';
export default async function getBodySize(body, headers) {
    if (headers && 'content-length' in headers) {
        return Number(headers['content-length']);
    }
    if (!body) {
        return 0;
    }
    if (is.string(body)) {
        return new TextEncoder().encode(body).byteLength;
    }
    if (is.buffer(body)) {
        return body.length;
    }
    if (is.typedArray(body)) {
        return body.byteLength;
    }
    if (isFormData(body)) {
        try {
            return await promisify(body.getLength.bind(body))();
        }
        catch (error) {
            const typedError = error;
            throw new Error('Cannot determine content-length for form-data with stream(s) of unknown length. '
                + 'This is a limitation of the `form-data` package. '
                + 'To fix this, either:\n'
                + '1. Use the `knownLength` option when appending streams:\n'
                + '   form.append(\'file\', stream, {knownLength: 12345});\n'
                + '2. Switch to spec-compliant FormData (formdata-node package)\n'
                + 'See: https://github.com/form-data/form-data#alternative-submission-methods\n'
                + `Original error: ${typedError.message}`);
        }
    }
    return undefined;
}