@whatwg-node/node-fetch/esm/fetch.js

Fetch API implementation for Node

import { Buffer } from 'node:buffer';
import { createReadStream } from 'node:fs';
import { fileURLToPath } from 'node:url';
import { fetchCurl } from './fetchCurl.js';
import { fetchNodeHttp } from './fetchNodeHttp.js';
import { PonyfillRequest } from './Request.js';
import { PonyfillResponse } from './Response.js';
import { PonyfillURL } from './URL.js';
import { fakePromise } from './utils.js';
const BASE64_SUFFIX = ';base64';
function getResponseForFile(url) {
    const path = fileURLToPath(url);
    const readable = createReadStream(path);
    return new PonyfillResponse(readable);
}
function getResponseForDataUri(url) {
    const [mimeType = 'text/plain', ...datas] = url.substring(5).split(',');
    const data = decodeURIComponent(datas.join(','));
    if (mimeType.endsWith(BASE64_SUFFIX)) {
        const buffer = Buffer.from(data, 'base64url');
        const realMimeType = mimeType.slice(0, -BASE64_SUFFIX.length);
        return new PonyfillResponse(buffer, {
            status: 200,
            statusText: 'OK',
            headers: {
                'content-type': realMimeType,
            },
        });
    }
    return new PonyfillResponse(data, {
        status: 200,
        statusText: 'OK',
        headers: {
            'content-type': mimeType,
        },
    });
}
function getResponseForBlob(url) {
    const blob = PonyfillURL.getBlobFromURL(url);
    if (!blob) {
        throw new TypeError('Invalid Blob URL');
    }
    return new PonyfillResponse(blob, {
        status: 200,
        headers: {
            'content-type': blob.type,
            'content-length': blob.size.toString(),
        },
    });
}
function isURL(obj) {
    return obj != null && obj.href != null;
}
export function fetchPonyfill(info, init) {
    if (typeof info === 'string' || isURL(info)) {
        const ponyfillRequest = new PonyfillRequest(info, init);
        return fetchPonyfill(ponyfillRequest);
    }
    const fetchRequest = info;
    if (fetchRequest.url.startsWith('data:')) {
        const response = getResponseForDataUri(fetchRequest.url);
        return fakePromise(response);
    }
    if (fetchRequest.url.startsWith('file:')) {
        const response = getResponseForFile(fetchRequest.url);
        return fakePromise(response);
    }
    if (fetchRequest.url.startsWith('blob:')) {
        const response = getResponseForBlob(fetchRequest.url);
        return fakePromise(response);
    }
    if (globalThis.libcurl && !fetchRequest.agent) {
        return fetchCurl(fetchRequest);
    }
    return fetchNodeHttp(fetchRequest);
}