Commands to upgrade an SPFx project to version 1.6 - though additional commands would be needed for any 3rd party npm packages used.

UpgradeSPFx1.6.bat

npm install @microsoft/[email protected] --save
npm install @microsoft/[email protected] --save
npm install @microsoft/[email protected] --save
npm install @microsoft/[email protected] --save
npm install @microsoft/[email protected] --save
npm install @microsoft/[email protected] --save
npm install @microsoft/[email protected] --save
npm install @microsoft/[email protected] --save
npm install @microsoft/[email protected] --save
npm install @microsoft/[email protected] --save

npm install @microsoft/[email protected] --save-dev
npm install @microsoft/[email protected] --save-dev
npm install @microsoft/[email protected] --save-dev
npm install @microsoft/[email protected] --save-dev

You know you can install all in a single line?

npm install --save @microsoft/[email protected] @microsoft/[email protected] @microsoft/[email protected]  @microsoft/[email protected]  @microsoft/[email protected]  @microsoft/[email protected]  @microsoft/[email protected] @microsoft/[email protected] @microsoft/[email protected]  @microsoft/[email protected]

npm install --save-dev @microsoft/[email protected]  @microsoft/[email protected] @microsoft/[email protected]  @microsoft/[email protected]