@shopify/shopify-app-react-router/dist/cjs/server/boundary/headers.js

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

'use strict';

function headersBoundary(headers) {
    const { parentHeaders, loaderHeaders, actionHeaders, errorHeaders } = headers;
    if (errorHeaders && Array.from(errorHeaders.entries()).length > 0) {
        return errorHeaders;
    }
    return new Headers([
        ...(parentHeaders ? Array.from(parentHeaders.entries()) : []),
        ...(loaderHeaders ? Array.from(loaderHeaders.entries()) : []),
        ...(actionHeaders ? Array.from(actionHeaders.entries()) : []),
    ]);
}

exports.headersBoundary = headersBoundary;
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