TODO.md

1. elastalert_server.ts - Object is possibly null (check is vars like _testController are deffined corectly)
2. server_config.ts - Added JSON.parse - probably not neede check how it was done before (old joi autoparse to object)
3. //"precommit": "./node_modules/eslint/bin/eslint.js ." in package.json
4. file_system.ts getEmptyDirectoryIndex() - add type
5. controllers\rules\index.ts - flat model for rules instead of { rules: ["rule1", "rule2"]}
6. controllers\templates\index.ts - flat model for rules instead of { templates: ["template1", "template2"]}
7. controllers\rules\index.ts and controllers\templates\index.ts are almost the same make base class or something
8. request_error.ts data more specify
9. JOI for TestRuleOptions or find way to handling defaults
10. statusHandler nullable status?
11. Better implement ConfigService as singleton and refactor to not using config/index.ts
12. Refactor rulesController.rule
13. metadataHandler fix resp.hits.hits.map(h => h._source);
14. metadataHandler fix getQueryString -> (<any>request.query).rule_name)
15. scripts/replace_templates.sh probably not needed
16. Better error handling and documentation - for now global error handling in elastalert_server.ts https://tsoa-community.github.io/docs/error-handling.html#setting-up-error-handling
17. Logging requst change RouteLogger to morgan (https://rsbh.dev/blog/rest-api-with-express-typescript)
18. Split logic form metadata.controller.ts to metadata.service.ts
19. Migrate latest fixes from https://github.com/johnsusek/elastalert-server