@shopify/shopify-app-react-router/dist/esm/server/authenticate/helpers/add-response-headers.mjs

Shopify React Router - to simplify the building of Shopify Apps with React Router

import { AppDistribution } from '../../types.mjs';

function addDocumentResponseHeadersFactory(params) {
    const { api, config } = params;
    return function (request, headers) {
        const { searchParams } = new URL(request.url);
        const shop = api.utils.sanitizeShop(searchParams.get('shop'));
        const isEmbeddedApp = config.distribution !== AppDistribution.ShopifyAdmin;
        addDocumentResponseHeaders(headers, isEmbeddedApp, shop);
    };
}
function addDocumentResponseHeaders(headers, isEmbeddedApp, shop) {
    if (shop) {
        headers.set('Link', '<https://cdn.shopify.com/shopifycloud/app-bridge.js>; rel="preload"; as="script";');
    }
    if (isEmbeddedApp) {
        if (shop) {
            headers.set('Content-Security-Policy', `frame-ancestors https://${shop} https://admin.shopify.com https://*.spin.dev https://admin.myshopify.io https://admin.shop.dev;`);
        }
    }
    else {
        headers.set('Content-Security-Policy', `frame-ancestors 'none';`);
    }
}

export { addDocumentResponseHeaders, addDocumentResponseHeadersFactory };
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