vite-plugin-react-server
Version:
Vite plugin for React Server Components (RSC)
101 lines (98 loc) • 12.6 kB
JavaScript
/**
* vite-plugin-react-server
* Copyright (c) Nico Brinkkemper
* MIT License
*/
import { Transform } from 'node:stream';
import { createStreamMetrics } from '../metrics/createStreamMetrics.js';
const collectRscContent = async function _collectRscContent(rsc, handlerOptions) {
const metrics = createStreamMetrics();
const startTime = performance.now();
const rscBuffer = [];
const metricsTransform = new Transform({
transform(chunk, _encoding, callback) {
metrics.chunks++;
metrics.bytes += chunk.length;
rscBuffer.push(Buffer.from(chunk));
callback(null, chunk);
},
flush(callback) {
metrics.duration = performance.now() - startTime;
if (handlerOptions.verbose) {
handlerOptions.logger.info(
`[collectRscContent] Transform flush: ${metrics.chunks} chunks, ${metrics.duration}ms`
);
}
callback();
}
});
try {
const { PassThrough } = await import('node:stream');
const consumer = new PassThrough();
rsc.pipe(metricsTransform).pipe(consumer);
await new Promise((resolve, reject) => {
const timeout = setTimeout(() => {
if (handlerOptions.verbose) {
handlerOptions.logger.info(
`[collectRscContent] Stream timeout reached, forcing completion`
);
}
resolve();
}, handlerOptions.rscTimeout || 5e3);
consumer.on("end", () => {
if (handlerOptions.verbose) {
handlerOptions.logger.info(
`[collectRscContent] Stream ended with ${metrics.bytes} bytes`
);
}
clearTimeout(timeout);
resolve();
});
consumer.on("error", (error) => {
if (handlerOptions.verbose) {
handlerOptions.logger.info(
`[collectRscContent] Stream error: ${error}`
);
}
clearTimeout(timeout);
reject(error);
});
});
if (handlerOptions.verbose) {
handlerOptions.logger.info(
`[collectRscContent] Collection completed with ${metrics.bytes} bytes`
);
}
const { Readable } = await import('node:stream');
const readableStream = new Readable({
read() {
for (const chunk of rscBuffer) {
this.push(chunk);
}
this.push(null);
}
});
return {
pipe: readableStream.pipe.bind(readableStream),
abort: (reason) => {
rsc.abort(reason);
readableStream.destroy(reason);
},
metrics,
// Include buffered content for reuse
bufferedContent: rscBuffer
};
} catch (error) {
if (handlerOptions.verbose) {
handlerOptions.logger.info(`[collectRscContent] Error: ${error}`);
}
metricsTransform.destroy();
rsc.abort(new Error("RSC Stream aborted"));
if (error != null) {
throw error;
}
throw new Error("Failed to collect RSC content");
}
};
export { collectRscContent };
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Does NOT write files - that's the caller's responsibility\n */\n\nimport { Transform } from \"node:stream\";\nimport { createStreamMetrics } from \"../metrics/createStreamMetrics.js\";\nimport type { CollectRscContentFn } from \"./types.js\";\n\n/**\n * Collects RSC content from a stream with metrics\n *\n * @param rsc The stream containing the RSC content\n * @param handlerOptions The options for the handler\n * @returns A promise that resolves with buffered content and metrics\n */\nexport const collectRscContent: CollectRscContentFn =\n  async function _collectRscContent(rsc, handlerOptions) {\n    const metrics = createStreamMetrics();\n    const startTime = performance.now();\n\n    // Buffer to store RSC content for reuse\n    const rscBuffer: Buffer[] = [];\n\n    // Create transform to track metrics and buffer content\n    const metricsTransform = new Transform({\n      transform(chunk, _encoding, callback) {\n        metrics.chunks++;\n        metrics.bytes += chunk.length;\n        // Buffer the chunk for reuse\n        rscBuffer.push(Buffer.from(chunk));\n        callback(null, chunk);\n      },\n      flush(callback) {\n        metrics.duration = performance.now() - startTime;\n        if (handlerOptions.verbose) {\n          handlerOptions.logger.info(\n            `[collectRscContent] Transform flush: ${metrics.chunks} chunks, ${metrics.duration}ms`\n          );\n        }\n        callback();\n      },\n    });\n\n    try {\n      // Create a PassThrough stream to consume the transform\n      const { PassThrough } = await import(\"node:stream\");\n      const consumer = new PassThrough();\n      \n      // Pipe RSC stream through metrics tracking to consumer\n      rsc.pipe(metricsTransform).pipe(consumer);\n\n      // Wait for stream to complete with timeout\n      await new Promise<void>((resolve, reject) => {\n        const timeout = setTimeout(() => {\n          if (handlerOptions.verbose) {\n            handlerOptions.logger.info(\n              `[collectRscContent] Stream timeout reached, forcing completion`\n            );\n          }\n          resolve();\n        }, handlerOptions.rscTimeout || 5000); // 5 second timeout\n\n        consumer.on(\"end\", () => {\n          if (handlerOptions.verbose) {\n            handlerOptions.logger.info(\n              `[collectRscContent] Stream ended with ${metrics.bytes} bytes`\n            );\n          }\n          clearTimeout(timeout);\n          resolve();\n        });\n\n        consumer.on(\"error\", (error) => {\n          if (handlerOptions.verbose) {\n            handlerOptions.logger.info(\n              `[collectRscContent] Stream error: ${error}`\n            );\n          }\n          clearTimeout(timeout);\n          reject(error);\n        });\n      });\n\n      if (handlerOptions.verbose) {\n        handlerOptions.logger.info(\n          `[collectRscContent] Collection completed with ${metrics.bytes} bytes`\n        );\n      }\n\n      // Create a readable stream from the buffered content that can be piped multiple times\n      const { Readable } = await import(\"node:stream\");\n      const readableStream = new Readable({\n        read() {\n          // Push all buffered content\n          for (const chunk of rscBuffer) {\n            this.push(chunk);\n          }\n          this.push(null); // End the stream\n        }\n      });\n\n      // Return buffered content and metrics - file writing is caller's responsibility\n      return {\n        pipe: readableStream.pipe.bind(readableStream),\n        abort: (reason?: unknown) => {\n          rsc.abort(reason);\n          readableStream.destroy(reason as Error);\n        },\n        metrics,\n        // Include buffered content for reuse\n        bufferedContent: rscBuffer,\n      };\n    } catch (error) {\n      if (handlerOptions.verbose) {\n        handlerOptions.logger.info(`[collectRscContent] Error: ${error}`);\n      }\n      metricsTransform.destroy();\n      rsc.abort(new Error(\"RSC Stream aborted\"));\n      if (error != null) {\n        throw error;\n      }\n      throw new Error(\"Failed to collect RSC content\");\n    }\n  };\n"],"names":[],"mappings":";;;;;;;;AAuBO,MAAM,iBACX,GAAA,eAAe,kBAAmB,CAAA,GAAA,EAAK,cAAgB,EAAA;AACrD,EAAA,MAAM,UAAU,mBAAoB,EAAA;AACpC,EAAM,MAAA,SAAA,GAAY,YAAY,GAAI,EAAA;AAGlC,EAAA,MAAM,YAAsB,EAAC;AAG7B,EAAM,MAAA,gBAAA,GAAmB,IAAI,SAAU,CAAA;AAAA,IACrC,SAAA,CAAU,KAAO,EAAA,SAAA,EAAW,QAAU,EAAA;AACpC,MAAQ,OAAA,CAAA,MAAA,EAAA;AACR,MAAA,OAAA,CAAQ,SAAS,KAAM,CAAA,MAAA;AAEvB,MAAA,SAAA,CAAU,IAAK,CAAA,MAAA,CAAO,IAAK,CAAA,KAAK,CAAC,CAAA;AACjC,MAAA,QAAA,CAAS,MAAM,KAAK,CAAA;AAAA,KACtB;AAAA,IACA,MAAM,QAAU,EAAA;AACd,MAAQ,OAAA,CAAA,QAAA,GAAW,WAAY,CAAA,GAAA,EAAQ,GAAA,SAAA;AACvC,MAAA,IAAI,eAAe,OAAS,EAAA;AAC1B,QAAA,cAAA,CAAe,MAAO,CAAA,IAAA;AAAA,UACpB,CAAwC,qCAAA,EAAA,OAAA,CAAQ,MAAM,CAAA,SAAA,EAAY,QAAQ,QAAQ,CAAA,EAAA;AAAA,SACpF;AAAA;AAEF,MAAS,QAAA,EAAA;AAAA;AACX,GACD,CAAA;AAED,EAAI,IAAA;AAEF,IAAA,MAAM,EAAE,WAAA,EAAgB,GAAA,MAAM,OAAO,aAAa,CAAA;AAClD,IAAM,MAAA,QAAA,GAAW,IAAI,WAAY,EAAA;AAGjC,IAAA,GAAA,CAAI,IAAK,CAAA,gBAAgB,CAAE,CAAA,IAAA,CAAK,QAAQ,CAAA;AAGxC,IAAA,MAAM,IAAI,OAAA,CAAc,CAAC,OAAA,EAAS,MAAW,KAAA;AAC3C,MAAM,MAAA,OAAA,GAAU,WAAW,MAAM;AAC/B,QAAA,IAAI,eAAe,OAAS,EAAA;AAC1B,UAAA,cAAA,CAAe,MAAO,CAAA,IAAA;AAAA,YACpB,CAAA,8DAAA;AAAA,WACF;AAAA;AAEF,QAAQ,OAAA,EAAA;AAAA,OACV,EAAG,cAAe,CAAA,UAAA,IAAc,GAAI,CAAA;AAEpC,MAAS,QAAA,CAAA,EAAA,CAAG,OAAO,MAAM;AACvB,QAAA,IAAI,eAAe,OAAS,EAAA;AAC1B,UAAA,cAAA,CAAe,MAAO,CAAA,IAAA;AAAA,YACpB,CAAA,sCAAA,EAAyC,QAAQ,KAAK,CAAA,MAAA;AAAA,WACxD;AAAA;AAEF,QAAA,YAAA,CAAa,OAAO,CAAA;AACpB,QAAQ,OAAA,EAAA;AAAA,OACT,CAAA;AAED,MAAS,QAAA,CAAA,EAAA,CAAG,OAAS,EAAA,CAAC,KAAU,KAAA;AAC9B,QAAA,IAAI,eAAe,OAAS,EAAA;AAC1B,UAAA,cAAA,CAAe,MAAO,CAAA,IAAA;AAAA,YACpB,qCAAqC,KAAK,CAAA;AAAA,WAC5C;AAAA;AAEF,QAAA,YAAA,CAAa,OAAO,CAAA;AACpB,QAAA,MAAA,CAAO,KAAK,CAAA;AAAA,OACb,CAAA;AAAA,KACF,CAAA;AAED,IAAA,IAAI,eAAe,OAAS,EAAA;AAC1B,MAAA,cAAA,CAAe,MAAO,CAAA,IAAA;AAAA,QACpB,CAAA,8CAAA,EAAiD,QAAQ,KAAK,CAAA,MAAA;AAAA,OAChE;AAAA;AAIF,IAAA,MAAM,EAAE,QAAA,EAAa,GAAA,MAAM,OAAO,aAAa,CAAA;AAC/C,IAAM,MAAA,cAAA,GAAiB,IAAI,QAAS,CAAA;AAAA,MAClC,IAAO,GAAA;AAEL,QAAA,KAAA,MAAW,SAAS,SAAW,EAAA;AAC7B,UAAA,IAAA,CAAK,KAAK,KAAK,CAAA;AAAA;AAEjB,QAAA,IAAA,CAAK,KAAK,IAAI,CAAA;AAAA;AAChB,KACD,CAAA;AAGD,IAAO,OAAA;AAAA,MACL,IAAM,EAAA,cAAA,CAAe,IAAK,CAAA,IAAA,CAAK,cAAc,CAAA;AAAA,MAC7C,KAAA,EAAO,CAAC,MAAqB,KAAA;AAC3B,QAAA,GAAA,CAAI,MAAM,MAAM,CAAA;AAChB,QAAA,cAAA,CAAe,QAAQ,MAAe,CAAA;AAAA,OACxC;AAAA,MACA,OAAA;AAAA;AAAA,MAEA,eAAiB,EAAA;AAAA,KACnB;AAAA,WACO,KAAO,EAAA;AACd,IAAA,IAAI,eAAe,OAAS,EAAA;AAC1B,MAAA,cAAA,CAAe,MAAO,CAAA,IAAA,CAAK,CAA8B,2BAAA,EAAA,KAAK,CAAE,CAAA,CAAA;AAAA;AAElE,IAAA,gBAAA,CAAiB,OAAQ,EAAA;AACzB,IAAA,GAAA,CAAI,KAAM,CAAA,IAAI,KAAM,CAAA,oBAAoB,CAAC,CAAA;AACzC,IAAA,IAAI,SAAS,IAAM,EAAA;AACjB,MAAM,MAAA,KAAA;AAAA;AAER,IAAM,MAAA,IAAI,MAAM,+BAA+B,CAAA;AAAA;AAEnD;;;;"}