fix!: treat * as a universal pattern (eslint#50)

Author: mdjermanovic

packages/config-array/README.md

@@ -286,7 +286,7 @@ A few things to keep in mind:
 -   You must pass in the absolute filename to get a config for.
 -   The returned config object never has `files`, `ignores`, or `name` properties; the only properties on the object will be the other configuration options specified.
 -   The config array caches configs, so subsequent calls to `getConfig()` with the same filename will return in a fast lookup rather than another calculation.
--   A config will only be generated if the filename matches an entry in a `files` key. A config will not be generated without matching a `files` key (configs without a `files` key are only applied when another config with a `files` key is applied; configs without `files` are never applied on their own). Any config with a `files` key entry ending with `/**` or `/*` will only be applied if another entry in the same `files` key matches or another config matches.
+-   A config will only be generated if the filename matches an entry in a `files` key. A config will not be generated without matching a `files` key (configs without a `files` key are only applied when another config with a `files` key is applied; configs without `files` are never applied on their own). Any config with a `files` key entry that is `*` or ends with `/**` or `/*` will only be applied if another entry in the same `files` key matches or another config matches.
 
 ## Determining Ignored Paths
 

packages/config-array/src/config-array.js

@@ -836,7 +836,7 @@ export class ConfigArray extends Array {
 
 		const matchingConfigIndices = [];
 		let matchFound = false;
-		const universalPattern = /\/\*{1,2}$/u;
+		const universalPattern = /^\*$|\/\*{1,2}$/u;
 
 		this.forEach((config, index) => {
 			if (!config.files) {
@@ -861,8 +861,8 @@ export class ConfigArray extends Array {
 			}
 
 			/*
-			 * If a config has a files pattern ending in /** or /*, and the
-			 * filePath only matches those patterns, then the config is only
+			 * If a config has a files pattern * or patterns ending in /** or /*,
+			 * and the filePath only matches those patterns, then the config is only
 			 * applied if there is another config where the filePath matches
 			 * a file with a specific extensions such as *.js.
 			 */

packages/config-array/tests/config-array.test.js

@@ -1434,6 +1434,26 @@ describe("ConfigArray", () => {
 				);
 			});
 
+			it('should return "unconfigured" when there is only * pattern', () => {
+				configs = new ConfigArray(
+					[
+						{
+							files: ["*"],
+						},
+					],
+					{
+						basePath,
+					},
+				);
+
+				configs.normalizeSync();
+
+				assert.strictEqual(
+					configs.getConfigStatus(path.join(basePath, "a.js")),
+					"unconfigured",
+				);
+			});
+
 			it('should return "matched" when files pattern matches and there is a pattern ending with /**', () => {
 				configs = new ConfigArray(
 					[