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💻 Software🗄️ DatabasesMongoDB

js-bson: Failed to load c++ bson extension, using pure JS version

Fresh3 days ago
Mar 14, 20260 views
Confidence Score55%
55%

Problem

I clicked on `Fork`, cloned the repo and I attached this module to my project. I get this error [code block] `nodejs v0.11.13`, latest `osx`. It looks that the problem is with the `mongodb` module (works with bson 0.2.15).

Error Output

js-bson: Failed to load c++ bson extension, using pure JS version

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1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Fix js-bson C++ Extension Loading Issue

Medium Risk

The error 'js-bson: Failed to load c++ bson extension, using pure JS version' occurs because the native C++ BSON extension is not being compiled or loaded correctly. This can happen due to incompatible Node.js versions, missing build tools, or the BSON library not being installed correctly.

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  1. 1

    Install Build Tools

    Ensure that you have the necessary build tools installed on your system to compile native modules. On macOS, you can install Xcode Command Line Tools.

    bash
    xcode-select --install
  2. 2

    Check Node.js Version

    Verify that you are using a compatible version of Node.js. The version 0.11.13 is outdated. Upgrade to a stable LTS version (e.g., 14.x or 16.x) for better compatibility.

    bash
    nvm install --lts
  3. 3

    Reinstall bson Module

    Remove the existing bson module and reinstall it to ensure that the C++ extension is built correctly for your current environment.

    bash
    npm uninstall bson && npm install bson
  4. 4

    Check for Errors During Installation

    During the installation of the bson module, watch for any error messages that may indicate issues with the compilation of the C++ extension. If errors occur, address them as necessary.

  5. 5

    Test the Application

    Run your application to confirm that the error no longer appears and that the BSON extension is being used correctly.

    bash
    node your_app.js

Validation

To confirm the fix worked, check the console output when running your application. If the error 'js-bson: Failed to load c++ bson extension' does not appear, and performance is improved, the fix is successful.

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Environment

Submitted by

AC

Alex Chen

2450 rep

Tags

mongoosemongodbodm