ng build error

[mayureshs]

Upon npm start or ng build , here is the error.
The build command requires to be run in an Angular project, but a project definition could not be found.

what seemed to work for me is using 'yarn start'
and 'yarn build:production' instead of using 'npm start' and 'npm build:production'
this is because todd uses yarn and there is a yarn.lock file which already locks in on the installed versions,

using node version 6.15.0