“parserOptions.project” has been set for @typescript-eslint/parser
Different lint rules for JavaScript and TypeScript files The problem happens for one of the reasons below: You’re using a rule which require type information and didn’t specify a parserOptions.project; You specified parserOptions.project, didn’t specify createDefaultProgram (it will be removed in a future version), and you’re linting files not included in the project (e.g. babel.config.js, … Read more