For better ESM compatibility, this adds a file extension for nested
package files.
This also removes the nested special handling of
`vscode-languageserver-types` and `vscode-languageserver-document`
imports. This is unnecessary, because they use the `"module"` field in
`package.json`.
- Both `js-yaml` and `yaml-languageserver-parser` have been replaced with
`yaml`.
- `jsonc-parser` has been externalized.
- All defaults are now specified explicitly.
- The new property `yamlVersion` has been added to match
`yaml-language-server`. The default is `1.2`.
- `DiagnosticsOptions` properties are now sorted alphabetically and
documentation has been enhanced.
Closes#117
- ESLint config `remcohaszing/typechecking` is extended.
- Various previously disabled ESLint rules have now been enabled.
- Various `any` types have been fixed.
- Removed useless type check of diagnostic code.
- The diagnostics adapter listener has been turned into an actual map.
