what is npm

'babel-present-env@latest' is not in the npm registry.

typeerror: cannot read property 'push' of undefined npm

solve cannot install dependency error for npm install

npm 'cross-env' is not recognized as an internal or external command

npm run test typeerror: cannot read property 'line' of undefined

npm err! response timeout while trying to fetch https://registry.npmjs.org/semver (over 30000ms)

npm warn notsup skipping optional dependency: unsupported platform for [email protected]: wanted

pm warn eresolve overriding peer dependency npm err! cannot read property 'length' of undefined

npm err! error: eacces: permission denied, symlink '../lib/node_modules/@angular/cli/bin/ng' -> '/usr/bin/ng'