why protractor is getting installed in a different directory on mac m1 even after giving permission to /usr/local/lib/node_modules

[austindarren]

First error user@suser-Air / % npm install -g protractor

npm WARN deprecated request@2.88.2: request has been deprecated, see request/request#3142

npm WARN deprecated har-validator@5.1.5: this library is no longer supported

npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules

npm ERR! code EACCES

npm ERR! syscall access

npm ERR! path /usr/local/lib/node_modules

Solution - I gave permission to the above path and ran again npm install -g protractor

Second error

user@suser-Air / % npm install -g protractor

npm WARN deprecated request@2.88.2: request has been deprecated, see request/request#3142

npm WARN deprecated har-validator@5.1.5: this library is no longer supported

npm ERR! code EACCES

npm ERR! syscall symlink

npm ERR! path ../lib/node_modules/protractor/bin/protractor

npm ERR! dest /usr/local/bin/protractor

npm ERR! errno -13

npm ERR! Error: EACCES: permission denied, symlink '../lib/node_modules/protractor/bin/protractor' -> '/usr/local/bin/protractor'

npm ERR! [OperationalError: EACCES: permission denied, symlink '../lib/node_modules/protractor/bin/protractor' -> '/usr/local/bin/protractor'] {

npm ERR! cause: [Error: EACCES: permission denied, symlink '../lib/node_modules/protractor/bin/protractor' -> '/usr/local/bin/protractor'] {

Node Version: 14.16.1
NPM version : '6.14.12'
Operating System and Version macOS Big Sur

[Jan Molak]

I'd suggest avoiding to install Protractor globally (your project loses control over the version it uses) and treat it as a dev dependency instead:

npm install --save-dev protractor

To run the tests, add a test script to your package.json:

{
  "scripts": {
    "test": "protractor ./protractor.conf.js"
  }
}

then invoke:

npm test

There are several template projects under https://github.com/serenity-js that use this pattern.

Hope this helps!

[austindarren]

sudo npm install -g protractor worked for me. Thanks for you input.
will try this next time.