Function getOKResponse

src/utils/network.ts:3–28

(url: string, mimeType?: string, origin?: string)

import {isFirefox} from './platform';

async function getOKResponse(url: string, mimeType?: string, origin?: string): Promise<Response> {
    const credentials = origin && url.startsWith(`${origin}/`) ? undefined : 'omit';
    const response = await fetch(
        url,
        {
            cache: 'force-cache',
            credentials,
            referrer: origin,
        },
    );

    // Firefox bug, content type is "application/x-unknown-content-type"
    if (isFirefox && mimeType === 'text/css' && url.startsWith('moz-extension://') && url.endsWith('.css')) {
        return response;
    }

    if (mimeType && !(response.headers.get('Content-Type') === mimeType || response.headers.get('Content-Type')!.startsWith(`${mimeType};`))) {
        throw new Error(`Mime type mismatch when loading ${url}`);
    }

    if (!response.ok) {
        throw new Error(`Unable to load ${url} ${response.status} ${response.statusText}`);
    }

    return response;
}

export async function loadAsDataURL(url: string, mimeType?: string): Promise<string> {
    const response = await getOKResponse(url, mimeType);