Add ignoreImports option to import-index rule

docs/rules/import-index.md

@@ -61,3 +61,16 @@ const m = require('@foo/bar');
 ```js
 import m from '.';
 ```
+
+
+### `ignoreImports`
+
+The default behavior is to check for imports. If you want to disable this (for example, you are moving to nodejs esm), set `ignoreImports` to `true`:
+
+```js
+// eslint unicorn/import-index: ["error", {"ignoreImports": true}]
+import m from './index'; // pass
+
+// eslint unicorn/import-index: ["error", {"ignoreImports": false}]
+import m from './index'; // fails
+```

rules/import-index.js

@@ -16,19 +16,37 @@ const importIndex = (context, node, argument) => {
 };
 
 const create = context => {
-	return {
-		'CallExpression[callee.name="require"]': node => importIndex(context, node, node.arguments[0]),
-		ImportDeclaration: node => importIndex(context, node, node.source)
+	const options = context.options[0] || {};
+
+	const rules = {
+		'CallExpression[callee.name="require"]': node => importIndex(context, node, node.arguments[0])
 	};
+
+	if (!options.ignoreImports) {
+		rules.ImportDeclaration = node => importIndex(context, node, node.source);
+	}
+
+	return rules;
 };
 
+const schema = [{
+	type: 'object',
+	properties: {
+		ignoreImports: {
+			type: 'boolean'
+		}
+	},
+	additionalProperties: false
+}];
+
 module.exports = {
 	create,
 	meta: {
 		type: 'suggestion',
 		docs: {
 			url: getDocumentationUrl(__filename)
 		},
+		schema,
 		fixable: 'code'
 	}
 };

test/import-index.js

@@ -16,9 +16,17 @@ const error = {
 	message: 'Do not reference the index file directly.'
 };
 
+const ignoreImportsOptions = [{
+	ignoreImports: true
+}];
+
 ruleTester.run('import-index', rule, {
 	valid: [
 		'const m = require(\'.\')',
+		{
+			code: 'const m = require(\'.\')',
+			options: ignoreImportsOptions
+		},
 		'const m = require(\'..\')',
 		'const m = require(\'../..\')',
 		'const m = require(\'./foobar\')',
@@ -37,11 +45,47 @@ ruleTester.run('import-index', rule, {
 		'import m from \'foobar\'',
 		'import m from \'index\'',
 		'import m from \'index.js\'',
+		{
+			code: 'import m from \'index.js\'',
+			options: ignoreImportsOptions
+		},
 		'import m from \'indexbar\'',
 		'import m from \'fooindex\'',
 		'import m from \'@index/foo\'',
 		'import m from \'@foo/index\'',
-		'import m from \'@foo/index.js\''
+		'import m from \'@foo/index.js\'',
+		{
+			code: 'import m from \'./\'',
+			options: ignoreImportsOptions
+		},
+		{
+			code: 'import m from \'./index\'',
+			options: ignoreImportsOptions
+		},
+		{
+			code: 'import m from \'./index.js\'',
+			options: ignoreImportsOptions
+		},
+		{
+			code: 'import m from \'../../index\'',
+			options: ignoreImportsOptions
+		},
+		{
+			code: 'import m from \'./foo/index.js\'',
+			options: ignoreImportsOptions
+		},
+		{
+			code: 'import m from \'./foobar/\'',
+			options: ignoreImportsOptions
+		},
+		{
+			code: 'import m from \'@foo/index/index\'',
+			options: ignoreImportsOptions
+		},
+		{
+			code: 'import m from \'@foo/index/index.js\'',
+			options: ignoreImportsOptions
+		}
 	],
 	invalid: [
 		{