@graphql-mesh/serve-runtime/esm/useStaticFiles.js

import { fs, path } from '@graphql-mesh/cross-helpers';
import { pathExists } from '@graphql-mesh/utils';
export const useStaticFiles = ({ baseDir, staticFiles = 'public' }) => {
    return {
        onRequest({ request, url, endResponse, fetchAPI }) {
            if (request.method === 'GET') {
                let relativePath = url.pathname;
                if (relativePath === '/' || !relativePath) {
                    relativePath = 'index.html';
                }
                const absoluteStaticFilesPath = path.join(baseDir, staticFiles);
                const absolutePath = path.join(absoluteStaticFilesPath, relativePath);
                if (absolutePath.startsWith(absoluteStaticFilesPath)) {
                    return pathExists(absolutePath).then(exists => {
                        if (exists) {
                            const readStream = fs.createReadStream(absolutePath);
                            endResponse(new fetchAPI.Response(readStream, {
                                status: 200,
                            }));
                        }
                    });
                }
            }
        },
    };
};