fix!: Allow escaping characters on Windows (#61)

Author: mdjermanovic

packages/config-array/package.json

@@ -48,7 +48,7 @@
   "dependencies": {
     "@eslint/object-schema": "^2.1.4",
     "debug": "^4.3.1",
-    "minimatch": "^3.0.5"
+    "minimatch": "^3.1.2"
   },
   "devDependencies": {
     "@types/minimatch": "^3.0.5",

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

@@ -60,6 +60,7 @@ const negatedMinimatchCache = new Map();
 const MINIMATCH_OPTIONS = {
 	// matchBase: true,
 	dot: true,
+	allowWindowsEscape: true,
 };
 
 /**

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

@@ -970,6 +970,107 @@ describe("ConfigArray", () => {
 				assert.strictEqual(config, undefined);
 			});
 
+			// https://github.com/eslint/eslint/issues/18597
+			it("should correctly handle escaped characters in `files` patterns", () => {
+				configs = new ConfigArray(
+					[
+						{
+							files: ["src/\\{a,b}.js"],
+							defs: {
+								severity: "error",
+							},
+						},
+					],
+					{ basePath, schema },
+				);
+
+				configs.normalizeSync();
+
+				assert.strictEqual(
+					configs.getConfig(path.resolve(basePath, "src", "a.js")),
+					undefined,
+				);
+				assert.strictEqual(
+					configs.getConfig(path.resolve(basePath, "src", "b.js")),
+					undefined,
+				);
+				assert.strictEqual(
+					configs.getConfig(path.resolve(basePath, "src", "{a,b}.js"))
+						.defs.severity,
+					"error",
+				);
+			});
+
+			it("should correctly handle escaped characters in `ignores` patterns", () => {
+				configs = new ConfigArray(
+					[
+						{
+							files: ["**/*.js"],
+							ignores: ["src/\\{a,b}.js"],
+							defs: {
+								severity: "error",
+							},
+						},
+					],
+					{ basePath, schema },
+				);
+
+				configs.normalizeSync();
+
+				assert.strictEqual(
+					configs.getConfig(path.resolve(basePath, "src", "a.js"))
+						.defs.severity,
+					"error",
+				);
+				assert.strictEqual(
+					configs.getConfig(path.resolve(basePath, "src", "b.js"))
+						.defs.severity,
+					"error",
+				);
+				assert.strictEqual(
+					configs.getConfig(
+						path.resolve(basePath, "src", "{a,b}.js"),
+					),
+					undefined,
+				);
+			});
+
+			it("should correctly handle escaped characters in global `ignores` patterns", () => {
+				configs = new ConfigArray(
+					[
+						{
+							files: ["**/*.js"],
+							defs: {
+								severity: "error",
+							},
+						},
+						{
+							ignores: ["src/\\{a,b}.js"],
+						},
+					],
+					{ basePath, schema },
+				);
+
+				configs.normalizeSync();
+
+				assert.strictEqual(
+					configs.getConfig(path.resolve(basePath, "src", "a.js"))
+						.defs.severity,
+					"error",
+				);
+				assert.strictEqual(
+					configs.getConfig(path.resolve(basePath, "src", "b.js"))
+						.defs.severity,
+					"error",
+				);
+				assert.strictEqual(
+					configs.getConfig(
+						path.resolve(basePath, "src", "{a,b}.js"),
+					),
+					undefined,
+				);
+			});
+
 			// https://github.com/eslint/eslint/issues/17103
 			describe("ignores patterns should be properly applied", () => {
 				it("should return undefined when a filename matches an ignores pattern but not a files pattern", () => {