refs https://github.com/TryGhost/DevOps/issues/50
- `react-app` comes from `eslint-config-react-app`, which is a CRA package
- we're moving away from that so this commit switches the linting over
to a more recently updated plugin
- once that was removed, we started using a newer version of
`@typescript-eslint/eslint-plugin`, so there were plenty of
updates/exemptions to make
refs https://github.com/TryGhost/DevOps/issues/50
- this switches the .eslint configs from `node` to `ts`, which is a new
config to support eslint for TypeScript
- also makes minor changes to adhere to these new rules
This is an initial start to using TypeScript in our non-core Ghost packages.
- Adds a prepare script to build the project after installing deps
- Adds an initial tsconfig.json which is compatible with our node env
- Migrates all of the code to TypeScript, including tests
- Updates tests to use ts-node so that we don't need to compile the tests
- ts-node is installed at the top level because the env is weird with lerna and
doesn't work otherwise
- Updates the yarn dev script to build the project with the --all and --revisions flag
This package will be used to contain the logic for determining when a
revisions should be generated for a post. It will be used by the Post
model during saving and will not handle the storage of revisions
