Ran into error rereading npm dependencies after altering package.json

[ayishagisel]

npm WARN @angular/core@2.4.10 requires a peer of zone.js@^0.7.2 but none is installed. You must install peer dependencies yourself.

audited 954 packages in 4.931s found 7 vulnerabilities (5 low, 2 high) run npm audit fix to fix them, or npm audit for details