every exercise is described step by step inside of the ./hello/src/hello.index.ts file in form of the TODO comments

don't forget to run npm run build (or run npm run build:watch in other console) in the base ./hello folder so that you compile your Typescript source code into javascript which can be executed using schematics command

always rememeber to running schematics command with the --dry-run=false flag to actualy perform changes to the file system because by default Angular Schematics run in dry run mode when executing schematics collection using relative path (for example .:<schematic-name> for a local folder, or ../path/to/collection.json:<schematic-name> )

always remember to delete generated file before running schematics again as we can't use --force flag before we use proper Angular Schematics templates