Could not find implementations for the following rules specified in the configuration

Question

I am converting my tslint to eslint using below

Reference: https://github.com/typescript-eslint/typescript-eslint/tree/master/packages/eslint-plugin-tslint#usage

This is my tslint.json file:

https://github.com/kumaresan-subramani/ESlint-tester/blob/main/tslint.json

my eslint.json file

 { "env": { "browser": true, "es2021": true }, "extends": [ "eslint:recommended", "plugin:@typescript-eslint/recommended" ], "parser": "@typescript-eslint/parser", "plugins": [ "@typescript-eslint", "@typescript-eslint/tslint" ], "parserOptions": { "project": "tsconfig.json" }, "rules": { "@typescript-eslint/tslint/config": ["warn", { "lintFile": "./tslint.json", // path to tslint.json of your project "rules": {}, "rulesDirectory": [ "node_modules/tslint-eslint-rules/dist/rules" ] }] }, "reportUnusedDisableDirectives": true }

While giving below command ia facing an error

yarn run eslint src

Error

 D:\today\ESlint-tester>yarn run eslint src yarn run v1.21.1 $ D:\today\ESlint-tester\node_modules\.bin\eslint src Could not find implementations for the following rules specified in the configuration: chai-vague-errors no-redundant-jsdoc missing-optional-annotation no-backbone-get-set-outside-model no-banned-terms no-cookies no-delete-expression no-document-write no-document-domain no-disable-auto-sanitization no-duplicate-parameter-names no-empty-interfaces no-exec-script no-function-constructor-with-string-args no-function-expression no-for-in no-multiline-string no-multiple-var-decl no-unnecessary-bind no-unnecessary-semicolons no-octal-literal no-sparse-arrays no-string-based-set-immediate no-string-based-set-interval no-unused-imports no-with-statement prefer-array-literal promise-must-complete react-no-dangerous-html use-named-parameter max-func-body-length no-empty-line-after-opening-brace Try upgrading TSLint and/or ensuring that you have all necessary custom rules installed. If TSLint was recently upgraded, you may have old rules configured which need to be cleaned up.

Answer 1

You are using typescript-eslint which is a:

ESLint plugin [that] wraps a TSLint configuration and lints the whole source using TSLint.

But the error message:

Could not find implementations for the following rules specified in the configuration:

comes from TSLint itself. The reason is that the rules in your tslint.json are not compatible with your TSLint version.

You have to either change the TSLint version or adapt the rules by reviewing the TSLint ChangeLog . Note that typescript-eslint need a 5.x or 6.x TSLint version (See its package.json ).

You can also check this SO question: Update TSLint Errors: Could not find implementations for the following rules specified in the configuration