ECMAScript module cannot be used in CommonJS module

[try-agaaain]

I wrote a piece of code to build a vector database and query for blocks of information similar to the input, as follows:

import { MemoryVectorStore } from "langchain/vectorstores/memory";
import { OpenAIEmbeddings } from "langchain/embeddings/openai";

export const getExamples = async (query: string, apiKey: string) => {
  const vectorStore = await MemoryVectorStore.fromTexts(
    ["example: Write a BPF code that traces block I/O operations and displays the latency for each operation, along with the disk, process, and PID associated with it.\n\n```\n#ifndef BPFTRACE_HAVE_BTF\n#include <linux/blkdev.h>\n#include <linux/blk-mq.h>\n#endif\n\nBEGIN\n{\n\tprintf(\"%-12s %-7s %-16s %-6s %7s\\n\", \"TIME(ms)\", \"DISK\", \"COMM\", \"PID\", \"LAT(ms)\");\n}\n\nkprobe:blk_account_io_start,\nkprobe:__blk_account_io_start\n{\n\t@start[arg0] = nsecs;\n\t@iopid[arg0] = pid;\n\t@iocomm[arg0] = comm;\n\t@disk[arg0] = ((struct request *)arg0)->q->disk->disk_name;\n}\n\nkprobe:blk_account_io_done,\nkprobe:__blk_account_io_done\n/@start[arg0] != 0 && @iopid[arg0] != 0 && @iocomm[arg0] != \"\"/\n\n{\n\t$now = nsecs;\n\tprintf(\"%-12u %-7s %-16s %-6d %7d\\n\",\n\t    elapsed / 1e6, @disk[arg0], @iocomm[arg0], @iopid[arg0],\n\t    ($now - @start[arg0]) / 1e6);\n\n\tdelete(@start[arg0]);\n\tdelete(@iopid[arg0]);\n\tdelete(@iocomm[arg0]);\n\tdelete(@disk[arg0]);\n}\n\nEND\n{\n\tclear(@start);\n\tclear(@iopid);\n\tclear(@iocomm);\n\tclear(@disk);\n}\n\n```\n",
    "example: Write a BPF code that traces directory entry cache (dcache) lookups in the Linux kernel. The code uses kernel dynamic tracing of functions lookup_fast() and d_lookup() to capture lookup information and prints the time, process ID, command, and file name for each lookup event.\n\n```\n#ifndef BPFTRACE_HAVE_BTF\n#include <linux/fs.h>\n#include <linux/sched.h>\n\n// from fs/namei.c:\nstruct nameidata {\n        struct path     path;\n        struct qstr     last;\n        // [...]\n};\n#endif\n\nBEGIN\n{\n\tprintf(\"Tracing dcache lookups... Hit Ctrl-C to end.\\n\");\n\tprintf(\"%-8s %-6s %-16s %1s %s\\n\", \"TIME\", \"PID\", \"COMM\", \"T\", \"FILE\");\n}\n\n// comment out this block to avoid showing hits:\nkprobe:lookup_fast,\nkprobe:lookup_fast.constprop.*\n{\n\t$nd = (struct nameidata *)arg0;\n\tprintf(\"%-8d %-6d %-16s R %s\\n\", elapsed / 1e6, pid, comm,\n\t    str($nd->last.name));\n}\n\nkprobe:d_lookup\n{\n\t$name = (struct qstr *)arg1;\n\t@fname[tid] = $name->name;\n}\n\nkretprobe:d_lookup\n/@fname[tid]/\n{\n\tprintf(\"%-8d %-6d %-16s M %s\\n\", elapsed / 1e6, pid, comm,\n\t    str(@fname[tid]));\n\tdelete(@fname[tid]);\n}\n\n```\n",
    "example: Write a BPF code that lists new thread creations, printing the time in milliseconds, PID, process name, and function name where the thread was created.\n\n```\nBEGIN\n{\n\tprintf(\"%-10s %-6s %-16s %s\\n\", \"TIME(ms)\", \"PID\", \"COMM\", \"FUNC\");\n}\n\nuprobe:libpthread:pthread_create,\nuprobe:libc:pthread_create\n{\n\tprintf(\"%-10u %-6d %-16s %s\\n\", elapsed / 1e6, pid, comm,\n\t    usym(arg2));\n}\n\n```\n",],
    [{ id: 1}, { id: 2}, { id: 3}],
    new OpenAIEmbeddings({openAIApiKey: apiKey, batchSize: 512})
  );
  const results = await vectorStore.similaritySearch(query, 3);
  const mergedContent = results.map((document) => document.pageContent).join('\n');
  return mergedContent;
};

This code can also be found in eBPFDatabase. However, the related function cannot be imported correctly at execution time and the following error occurs:

Type error: The current file is a CommonJS module whose imports will produce 'require' calls; however, the referenced file is an ECMAScript module and cannot be imported with 'require'. Consider writing a dynamic 'import("langchain/vectorstores/memory")' call instead.
  To convert this file to an ECMAScript module, add the field `"type": "module"` to '/workspaces/GPT2BPF/package.json'.

> 1 | import { MemoryVectorStore } from "langchain/vectorstores/memory";
    |                                   ^
  2 | import { OpenAIEmbeddings } from "langchain/embeddings/openai";

Is there a convenient way to solve this problem? Any suggestions would be greatly appreciated.

[dosubot]

🤖

Hello,

The error you're encountering is due to trying to import an ECMAScript module into a CommonJS module. This is a common issue when working with different module systems in Node.js.

To resolve this issue, you can use dynamic imports which are supported in both CommonJS and ECMAScript modules. Here's how you can modify your code:

export const getExamples = async (query: string, apiKey: string) => {
  const { MemoryVectorStore } = await import("langchain/vectorstores/memory");
  const { OpenAIEmbeddings } = await import("langchain/embeddings/openai");

  const vectorStore = await MemoryVectorStore.fromTexts(
    ["example: Write a BPF code that traces block I/O operations and displays the latency for each operation, along with the disk, process, and PID associated with it.\n\n```\n#ifndef BPFTRACE_HAVE_BTF\n#include <linux/blkdev.h>\n#include <linux/blk-mq.h>\n#endif\n\nBEGIN\n{\n\tprintf(\"%-12s %-7s %-16s %-6s %7s\\n\", \"TIME(ms)\", \"DISK\", \"COMM\", \"PID\", \"LAT(ms)\");\n}\n\nkprobe:blk_account_io_start,\nkprobe:__blk_account_io_start\n{\n\t@start[arg0] = nsecs;\n\t@iopid[arg0] = pid;\n\t@iocomm[arg0] = comm;\n\t@disk[arg0] = ((struct request *)arg0)->q->disk->disk_name;\n}\n\nkprobe:blk_account_io_done,\nkprobe:__blk_account_io_done\n/@start[arg0] != 0 && @iopid[arg0] != 0 && @iocomm[arg0] != \"\"/\n\n{\n\t$now = nsecs;\n\tprintf(\"%-12u %-7s %-16s %-6d %7d\\n\",\n\t    elapsed / 1e6, @disk[arg0], @iocomm[arg0], @iopid[arg0],\n\t    ($now - @start[arg0]) / 1e6);\n\n\tdelete(@start[arg0]);\n\tdelete(@iopid[arg0]);\n\tdelete(@iocomm[arg0]);\n\tdelete(@disk[arg0]);\n}\n\nEND\n{\n\tclear(@start);\n\tclear(@iopid);\n\tclear(@iocomm);\n\tclear(@disk);\n}\n\n```\n",
    "example: Write a BPF code that traces directory entry cache (dcache) lookups in the Linux kernel. The code uses kernel dynamic tracing of functions lookup_fast() and d_lookup() to capture lookup information and prints the time, process ID, command, and file name for each lookup event.\n\n```\n#ifndef BPFTRACE_HAVE_BTF\n#include <linux/fs.h>\n#include <linux/sched.h>\n\n// from fs/namei.c:\nstruct nameidata {\n        struct path     path;\n        struct qstr     last;\n        // [...]\n};\n#endif\n\nBEGIN\n{\n\tprintf(\"Tracing dcache lookups... Hit Ctrl-C to end.\\n\");\n\tprintf(\"%-8s %-6s %-16s %1s %s\\n\", \"TIME\", \"PID\", \"COMM\", \"T\", \"FILE\");\n}\n\n// comment out this block to avoid showing hits:\nkprobe:lookup_fast,\nkprobe:lookup_fast.constprop.*\n{\n\t$nd = (struct nameidata *)arg0;\n\tprintf(\"%-8d %-6d %-16s R %s\\n\", elapsed / 1e6, pid, comm,\n\t    str($nd->last.name));\n}\n\nkprobe:d_lookup\n{\n\t$name = (struct qstr *)arg1;\n\t@fname[tid] = $name->name;\n}\n\nkretprobe:d_lookup\n/@fname[tid]/\n{\n\tprintf(\"%-8d %-6d %-16s M %s\\n\", elapsed / 1e6, pid, comm,\n\t    str(@fname[tid]));\n\tdelete(@fname[tid]);\n}\n\n```\n",
    "example: Write a BPF code that lists new thread creations, printing the time in milliseconds, PID, process name, and function name where the thread was created.\n\n```\nBEGIN\n{\n\tprintf(\"%-10s %-6s %-16s %s\\n\", \"TIME(ms)\", \"PID\", \"COMM\", \"FUNC\");\n}\n\nuprobe:libpthread:pthread_create,\nuprobe:libc:pthread_create\n{\n\tprintf(\"%-10u %-6d %-16s %s\\n\", elapsed / 1e6, pid, comm,\n\t    usym(arg2));\n}\n\n```\n",],
    [{ id: 1}, { id: 2}, { id: 3}],
    new OpenAIEmbeddings({openAIApiKey: apiKey, batchSize: 512})
  );
  const results = await vectorStore.similaritySearch(query, 3);
  const mergedContent = results.map((document) => document.pageContent).join('\n');
  return mergedContent;
};

This approach uses the import() function which returns a promise. This function can be used in an async function to import the module and use it in your code. Please note that this method is asynchronous and the imported modules will not be available immediately. If you need to use the imported modules in a synchronous way, you might need to refactor your code to use promises or async/await.

Also, please ensure that you're using a version of Node.js that supports ECMAScript modules. The current version of Node.js that langchainjs supports is 20 and above.

I hope this helps! Let me know if you have any other questions.

Sources

• langchain in commonjs come up a error
• Issue importing submodules using es6 module import from documentation
• environment_tests/test-exports-cjs/src/entrypoints.js
• environment_tests/test-exports-esm/src/import.cjs
• package.json
• .nvmrc

---

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[try-agaaain]

Useful!