ESLint demands semicolon and wants it removed at the same time

Question

I am configuring ESLint (as TSLint is soon-to-be-deprecated) to work with my .ts files. I have this very little file:

export default interface Departure {
  line: string;
  direction: string;
  time: Date;
};

in the last time, where semicolon is, ESLint in my VSCode signals two errors: one about missing semicolon eslint(semi) and another one about unnecessary semicolon eslint(no-extra-semi).

Below is my .eslintrc.js:

module.exports = {
    "env": {
        "browser": true,
        "commonjs": true,
        "es6": true,
        "node": true
    },
    "extends": [
        "plugin:@typescript-eslint/recommended",
        "airbnb"
    ],
    "globals": {
        "Atomics": "readonly",
        "SharedArrayBuffer": "readonly"
    },
    "parser": "@typescript-eslint/parser",
    "parserOptions": {
        "ecmaFeatures": {
            "jsx": true
        },
        "ecmaVersion": 2018
    },
    "plugins": [
        "react",
        "@typescript-eslint"
    ],
    "settings": {
        "import/resolver": {
            "node": {
                "extensions": [".js", ".jsx", ".ts", ".tsx"]
            }
        }
    },
    "rules": {
    }
};

how can I get rid of this bizarre situation? None of the errors should be there.

Answer 1

The issue here is that 2 rules are applied at the same time:
1. export default requires to have a semicolon
2. interface requires to get rid of a semicolon

The fix here would be to split the declaration of the interface from the export statement like so:

interface Departure {
  line: string;
  direction: string;
  time: Date;
}

export default Departure;

I didn't come up with the answer myself. Source was this submitted issue