使用pdfmake时出现npm ERR! Object.entries is not a function错误求助

Hey there, I’ve run into this exact snag with ancient Node versions before—let’s get you back up and running quickly!

Why this error pops up #

Object.entries() is an ES2017 feature that didn’t make its way into Node.js until v7.0.0. Your current Node.js version (v6.6.0) is a seriously outdated release (it stopped getting security updates way back in 2019) that has no support for this method. Modern npm versions rely on Object.entries() for internal operations, which is why every install command throws this error now.

Solutions to resolve it #

1. Upgrade Node.js (Highly Recommended) #

This is the best long-term fix, since Node.js v6.x is completely unmaintained and full of unpatched security gaps. Here’s how to do it smoothly:

• Use nvm (Node Version Manager) to install and switch to a supported LTS (Long-Term Support) version. LTS releases get regular updates and are stable for production use.
  • Install nvm first if you don’t have it, then run:

    nvm install lts/*
    nvm use lts/*
    

  • Verify the upgrade worked with:

    node -v
    npm -v
    

  After this, you’ll be on a modern Node/npm setup and won’t hit this compatibility wall again.

2. Downgrade npm (Temporary Workaround) #

If you absolutely can’t upgrade Node.js right now (again, not recommended for security reasons), you can downgrade npm to a version that plays nice with Node.js v6:

• Run this command to install an older npm version compatible with v6:

  npm install -g npm@4
  

  (npm 4 is the last major version fully compatible with Node.js v6; npm 3 also works if you prefer it)
• Check that the downgrade succeeded with:

  npm -v
  

  This should let you install packages without the Object.entries error, but make sure to upgrade Node.js as soon as you can.

Quick heads-up: Even if the workaround works, sticking with Node.js v6 puts your project at risk of security vulnerabilities that will never be fixed. Upgrading is the safest call.

内容的提问来源于stack exchange，提问作者Yaswanth