Troubling with installing firebase-tools - firebase

Question

After installing node and the npm, I tried installing firebase-tools on my computer (because cloud functions). This is what I see:
npm WARN deprecated node-uuid#1.4.8: Use uuid module instead
npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules/firebase-tools
npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules/firebase-tools/node_modules
npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules/firebase-tools/node_modules/#google-cloud
npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules
npm ERR! path /usr/local/lib/node_modules/firebase-tools
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access
npm ERR! Error: EACCES: permission denied, access '/usr/local/lib/node_modules/firebase-tools'
npm ERR! { Error: EACCES: permission denied, access '/usr/local/lib/node_modules/firebase-tools'
npm ERR! stack: 'Error: EACCES: permission denied, access \'/usr/local/lib/node_modules/firebase-tools\'',
npm ERR! errno: -13,
npm ERR! code: 'EACCES',
npm ERR! syscall: 'access',
npm ERR! path: '/usr/local/lib/node_modules/firebase-tools' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/joeljohnson/.npm/_logs/2018-01-26T16_56_29_829Z-debug.log
I haven't found a solution to my problem yet, how can I resolve this?

Answer 1

I was able to fix this. The problem is with the package 'grpc'. I don't know the exact nature of error but through trial and error i moved to the the directory where firebase was installed and installed grpc manually.
Commands for that are.
sudo npm install -g firebase-tools #This will give errors but let it be
cd /usr/lib/node_modules/firebase-tools/
sudo npm install grpc#1.4.1
sudo npm install -g firebase-tools