Only support arrays of globs.

Author: knpwrs

docs/rules/no-extraneous-dependencies.md

@@ -19,13 +19,7 @@ You can set the options like this:
 "import/no-extraneous-dependencies": ["error", {"devDependencies": false, "optionalDependencies": false, "peerDependencies": false}]
 ```
 
-You can also use globs instead of literal booleans:
-
-```js
-"import/no-extraneous-dependencies": ["error", {"devDependencies": "*.test.js"}]
-```
-
-When using a glob, the setting will be activated if the name of the file being linted matches the given glob. In addition, you can use an array to specify multiple globs:
+You can also use an array of globs instead of literal booleans:
 
 ```js
 "import/no-extraneous-dependencies": ["error", {"devDependencies": ['*.test.js', '*.spec.js']}]

src/rules/no-extraneous-dependencies.js

@@ -78,7 +78,7 @@ function testConfig(config, filename) {
     return config
   }
   // Account for the possibility of an array for multiple configuration
-  return [].concat(config).some(c =>  minimatch(filename, c))
+  return config.some(c => minimatch(filename, c))
 }
 
 module.exports = function (context) {
@@ -113,9 +113,9 @@ module.exports.schema = [
   {
     'type': 'object',
     'properties': {
-      'devDependencies': { 'type': ['boolean', 'string', 'array'] },
-      'optionalDependencies': { 'type': ['boolean', 'string', 'array'] },
-      'peerDependencies': { 'type': ['boolean', 'string', 'array'] },
+      'devDependencies': { 'type': ['boolean', 'array'] },
+      'optionalDependencies': { 'type': ['boolean', 'array'] },
+      'peerDependencies': { 'type': ['boolean', 'array'] },
     },
     'additionalProperties': false,
   },

tests/src/rules/no-extraneous-dependencies.js

@@ -37,7 +37,7 @@ ruleTester.run('no-extraneous-dependencies', rule, {
     }),
     test({
       code: 'import chai from "chai"',
-      options: [{devDependencies: '*.spec.js'}],
+      options: [{devDependencies: ['*.spec.js']}],
       filename: 'foo.spec.js',
     }),
     test({
@@ -101,7 +101,7 @@ ruleTester.run('no-extraneous-dependencies', rule, {
     }),
     test({
       code: 'import chai from "chai"',
-      options: [{devDependencies: '*.test.js'}],
+      options: [{devDependencies: ['*.test.js']}],
       filename: 'foo.tes.js',
       errors: [{
         ruleId: 'no-extraneous-dependencies',