@nestjs/platform-fastify/multipart/storage/memory.storage.js

Nest - modern, fast, powerful node.js web framework (@platform-fastify)

/**
 * Buffers each file into `file.buffer`. The default storage engine, as in
 * multer.
 *
 * @publicApi
 */
export function memoryStorage() {
    return {
        _handleFile(_req, file, callback) {
            const chunks = [];
            file.stream.on('data', (chunk) => chunks.push(chunk));
            file.stream.once('error', callback);
            file.stream.once('end', () => {
                const buffer = Buffer.concat(chunks);
                callback(null, { buffer, size: buffer.length });
            });
        },
        _removeFile(_req, file, callback) {
            delete file.buffer;
            callback(null);
        },
    };
}