Repro

JavaScript file (gulpfile.js):

/* eslint-env node */

const gulp = require('gulp');

{
	"parser": "@typescript-eslint/parser",
	"parserOptions": {
		"ecmaVersion": 3
	},
	"env": {
		"browser": true
	},
	"plugins": [
		"@typescript-eslint"
	],
	"extends": "plugin:@typescript-eslint/recommended"
}

Expected Result

I have a package with mostly TypeScript, but also a gulpfile.js, which is plain old JavaScript. I was expecting this plugin to only lint the TypeScript files

Actual Result

For the gulpfile:
error Require statement not part of import statement @typescript-eslint/no-var-requires

Additional Info

I suppose this applies to any mixed codebase containing JS and TS together

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