npm ERR! Refusing to delete / code EEXIST

I'm just running a simple npm install and i get this error.

npm ERR! path /Users/jasonazoulay/Desktop/fabrick.io/delegation/node_modules/@angular/cli/node_modules/webpack/node_modules/yargs/node_modules/os-locale/node_modules/execa/node_modules/cross-spawn/node_modules/.bin/which
npm ERR! code EEXIST
npm ERR! Refusing to delete /Users/jasonazoulay/Desktop/fabrick.io/delegation/node_modules/@angular/cli/node_modules/webpack/node_modules/yargs/node_modules/os-locale/node_modules/execa/node_modules/cross-spawn/node_modules/.bin/which: is outside /Users/jasonazoulay/Desktop/fabrick.io/delegation/node_modules/@angular/cli/node_modules/webpack/node_modules/yargs/node_modules/os-locale/node_modules/execa/node_modules/cross-spawn/node_modules/which and not a link
npm ERR! File exists: /Users/jasonazoulay/Desktop/fabrick.io/delegation/node_modules/@angular/cli/node_modules/webpack/node_modules/yargs/node_modules/os-locale/node_modules/execa/node_modules/cross-spawn/node_modules/.bin/which
npm ERR! Move it away, and try again

This is the first time I get this error and I don't know what to do.

1. Delete the node_modules directory completely.
2. Run npm install again.