I just came back to work on a React project after working in the Rails environment and found that I cannot run any NPM commands in my Mac terminal. I've tried all the remedies that I have come across but none have worked. The bigger issue is what caused this and how can I avoid it again.

Here is the error. What do I need to do? Please help.

$npm install            



internal/modules/cjs/loader.js:550

    throw err;

    ^



Error: Cannot find module '../lib/utils/unsupported.js'

    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:548:15)

    at Function.Module._load (internal/modules/cjs/loader.js:475:25)

    at Module.require (internal/modules/cjs/loader.js:598:17)

    at require (internal/modules/cjs/helpers.js:11:18)

    at /usr/local/lib/node_modules/npm/bin/npm-cli.js:19:21

    at Object.<anonymous> (/usr/local/lib/node_modules/npm/bin/npm-cli.js:92:3)

    at Module._compile (internal/modules/cjs/loader.js:654:30)

    at Object.Module._extensions..js (internal/modules/cjs/loader.js:665:10)

    at Module.load (internal/modules/cjs/loader.js:566:32)

    at tryModuleLoad (internal/modules/cjs/loader.js:506:12)

I have tried the following:

$brew update

$brew uninstall node

$brew install node

After which the following commands come up as so when $which npm was unknown command before:

$which npm

/usr/local/bin/npm



$which node

/usr/local/bin/node

I even tried running:

/usr/local/bin/npm -v

but get the same error as above while

/usr/local/bin/node -v

v9.11.1

works fine.

added the following to my .zshrc file:

export PATH=/usr/local/bin/node:$PATH

export PATH=/usr/local/bin/npm:$PATH

I have also tried:

$brew uninstall --force node

$brew link --overwrite node 

Warning: Already linked: /usr/local/Cellar/node/9.11.1

To relink: brew unlink node && brew link node



$rm -rf /usr/local/lib/node_modules/npm    

then,

$node install

but that does not work, either.

$echo $NODE_PATH

does come up empty, so I may need to added the following to my .bashrc.

export PATH=/usr/local/bin/npm:/usr/local/bin/node:/usr/local/bin:$PATH 

That does not work either.