Upgrade tutorial webpart in SPFx 1.0.0 to 1.5.1 Or latest

Hi All,

I am trying to go build and test tutorial web parts of given in GitHub.

But few of them are in SPFx 1.0.0 which do not run on latest environment created by following steps

Set up your SharePoint Framework development environment

Build your first SharePoint client-side web part (Hello World part 1)

If anyone can specify step by step commands to upgrade SPFx 1.0.0 webparts to 1.5.1 Or latest, it will be great help.