fix: handle oxlint ignorePatterns as an ESLint global ignore (#564)

resolve #563

---------

Co-authored-by: Sysix <sysix@sysix-coding.de>

Author: kazupon

src/build-from-oxlint-config.spec.ts

@@ -232,6 +232,20 @@ describe('nursery rules', () => {
   });
 });
 
+describe('ignorePatterns handling', () => {
+  it('should create ignore config as eslint global ignores', () => {
+    const config = {
+      ignorePatterns: ['**/*.test.ts', '**/*.spec.ts'],
+      rules: { eqeqeq: 'off' },
+    };
+    const configs = buildFromOxlintConfig(config);
+
+    expect(configs.length).toBeGreaterThanOrEqual(2);
+    expect(configs[0].rules).toBeUndefined();
+    expect(configs[0].ignores).toStrictEqual(['**/*.test.ts', '**/*.spec.ts']);
+  });
+});
+
 const createConfigFileAndBuildFromIt = (
   filename: string,
   content: string

src/build-from-oxlint-config/index.ts

@@ -65,12 +65,6 @@ export const buildFromOxlintConfig = (
     rules,
   };
 
-  const ignorePatterns = readIgnorePatternsFromConfig(config);
-
-  if (ignorePatterns !== undefined) {
-    handleIgnorePatternsScope(ignorePatterns, baseConfig);
-  }
-
   const overrides = readOverridesFromConfig(config);
   const configs = splitDisabledRulesForVueAndSvelteFiles(
     baseConfig
@@ -80,7 +74,16 @@ export const buildFromOxlintConfig = (
     handleOverridesScope(overrides, configs, categories, options);
   }
 
-  return configs;
+  const ignorePatterns = readIgnorePatternsFromConfig(config);
+  if (ignorePatterns === undefined) {
+    return configs;
+  } else {
+    const ignoreConfig: EslintPluginOxlintConfig = {
+      name: 'oxlint/oxlint-config-ignore-patterns',
+    };
+    handleIgnorePatternsScope(ignorePatterns, ignoreConfig);
+    return [ignoreConfig, ...configs];
+  }
 };
 
 /**