Fix the default value for the filename-case rule

The default was not what was documented. It was documented as `kebabCase`, but the default in the code was `camelCase`.

index.js

@@ -17,19 +17,9 @@ module.exports = {
 				'unicorn'
 			],
 			rules: {
-				'unicorn/catch-error-name': [
-					'error',
-					{
-						name: 'error'
-					}
-				],
+				'unicorn/catch-error-name': 'error',
 				'unicorn/explicit-length-check': 'error',
-				'unicorn/filename-case': [
-					'error',
-					{
-						case: 'kebabCase'
-					}
-				],
+				'unicorn/filename-case': 'error',
 				'unicorn/no-abusive-eslint-disable': 'error',
 				'unicorn/no-process-exit': 'error',
 				'unicorn/throw-new-error': 'error',

readme.md

@@ -35,19 +35,9 @@ Configure it in `package.json`.
 			"unicorn"
 		],
 		"rules": {
-			"unicorn/catch-error-name": [
-				"error",
-				{
-					"name": "error"
-				}
-			],
+			"unicorn/catch-error-name": "error",
 			"unicorn/explicit-length-check": "error",
-			"unicorn/filename-case": [
-				"error",
-				{
-					"case": "kebabCase"
-				}
-			],
+			"unicorn/filename-case": "error",
 			"unicorn/no-abusive-eslint-disable": "error",
 			"unicorn/no-process-exit": "error",
 			"unicorn/throw-new-error": "error",

rules/filename-case.js

@@ -70,7 +70,7 @@ function splitFilename(filename) {
 const create = context => {
 	const options = context.options[0] || {};
 
-	const chosenCase = cases[options.case || 'camelCase'];
+	const chosenCase = cases[options.case || 'kebabCase'];
 	const filenameWithExt = context.getFilename();
 
 	if (filenameWithExt === '<text>') {

test/filename-case.js

@@ -83,7 +83,7 @@ ruleTester.run('filename-case', rule, {
 		testCase(
 			'src/foo/foo_bar.js',
 			undefined,
-			'Filename is not in camel case. Rename it to `fooBar.js`.'
+			'Filename is not in kebab case. Rename it to `foo-bar.js`.'
 		),
 		testCase(
 			'src/foo/foo_bar.js',