refactor: Simplify eslint configs

eslint.config.js

@@ -1,4 +1,5 @@
 const antfu = require('@antfu/eslint-config');
+const fileNamesConfig = require('./eslint/file-names');
 const generalConfig = require('./eslint/general');
 const testConfig = require('./eslint/test');
 const typedConfig = require('./eslint/typed');
@@ -16,36 +17,40 @@ module.exports = antfu.default(
   {
     // Don't want to lint test assets, or TS snippets in markdown files
     ignores: [ 'test/assets/*', '**/*.md/**/*.ts' ],
+    typescript: {
+      tsconfigPath: [ './tsconfig.json', './scripts/tsconfig.json', './test/tsconfig.json' ],
     },
-  generalConfig,
-  unicornConfig,
-  typedConfig({
-    project: [ './tsconfig.json', './scripts/tsconfig.json', './test/tsconfig.json' ],
-    tsconfigRootDir: __dirname,
-  }),
-  testConfig,
-  {
-    // JSON rules
-    files: [ '**/*.json' ],
+  },
+)
+  .append(generalConfig)
+  .append(unicornConfig)
+  .append(fileNamesConfig)
+  // Using an override here so all the type settings are also applied correctly
+  .override('antfu:typescript:rules-type-aware', typedConfig)
+  .append({
+    ...testConfig,
+    files: [ 'test/**/*.ts' ],
+  })
+  .override('antfu:jsonc:rules', {
     rules: {
+      // Consistent with how we do it in code
       'jsonc/array-bracket-spacing': [ 'error', 'always', {
         singleValue: true,
         objectsInArrays: false,
         arraysInArrays: false,
       }],
     },
-  },
-  {
+  })
+  .append({
     // This is necessary to prevent filename checks caused by JSON being present in a README.
     files: [ '**/README.md/**' ],
     rules: {
       'unicorn/filename-case': 'off',
     },
-  },
-  {
-    files: [ '**/*.md' ],
+  })
+  .override('antfu:markdown:parser', {
     rules: {
+      // We want to be able to use these in Markdown text
       'no-irregular-whitespace': 'off',
     },
-  },
-);
+  });

eslint/file-names.js

@@ -0,0 +1,33 @@
+module.exports = [
+  {
+    name: 'opinionated:file-names:all',
+    rules: {
+      'unicorn/filename-case': [ 'error', {
+        cases: {
+          camelCase: false,
+          pascalCase: false,
+          kebabCase: true,
+          snakeCase: false,
+        },
+        ignore: [
+          // CODE_OF_CONDUCT.md, etc.
+          /[A-Z_]+\.md$/u,
+        ],
+      }],
+    },
+  },
+  {
+    name: 'opinionated:file-names:ts',
+    files: [ '**/*.ts' ],
+    rules: {
+      'unicorn/filename-case': [ 'error', {
+        cases: {
+          camelCase: true,
+          pascalCase: true,
+          kebabCase: false,
+          snakeCase: false,
+        },
+      }],
+    },
+  },
+];

eslint/general.js

@@ -1,4 +1,5 @@
 module.exports = {
+  name: 'opinionated:general',
   rules: {
     'antfu/consistent-list-newline': 'error',
 

eslint/test.js

@@ -2,11 +2,11 @@ const jest = require('eslint-plugin-jest');
 
 // Specifically for tests
 module.exports = {
+  name: 'opinionated:test',
   // See https://github.com/jest-community/eslint-plugin-jest/issues/1408
   plugins: {
     jest,
   },
-  files: [ 'test/**/*.ts' ],
   rules: {
     ...jest.configs.all.rules,
     // Rule is not smart enough to check called function in the test

eslint/typed.js

@@ -1,48 +1,5 @@
-// Copied from https://github.com/antfu/eslint-config/blob/main/src/configs/typescript.ts
-// Doing it like this, so we can make sure these only try to trigger on *.ts files,
-// Preventing issues with the *.js files.
-const typeAwareRules = {
-  'dot-notation': 'off',
-  'no-implied-eval': 'off',
-  'no-throw-literal': 'off',
-  'ts/await-thenable': 'error',
-  'ts/dot-notation': [ 'error', { allowKeywords: true }],
-  'ts/no-floating-promises': 'error',
-  'ts/no-for-in-array': 'error',
-  'ts/no-implied-eval': 'error',
-  'ts/no-misused-promises': 'error',
-  'ts/no-throw-literal': 'error',
-  'ts/no-unnecessary-type-arguments': 'error',
-  'ts/no-unnecessary-type-assertion': 'error',
-  'ts/no-unsafe-argument': 'error',
-  'ts/no-unsafe-assignment': 'error',
-  'ts/no-unsafe-call': 'error',
-  'ts/no-unsafe-member-access': 'error',
-  'ts/no-unsafe-return': 'error',
-  'ts/restrict-plus-operands': 'error',
-  'ts/restrict-template-expressions': 'error',
-  'ts/unbound-method': 'error',
-};
-
-const defaults = {
-  project: [ './tsconfig.json' ],
-  files: [ '**/*.ts' ],
-  tsconfigRootDir: process.cwd(),
-};
-
-module.exports = function(options) {
-  options = { ...defaults, ...options };
-  return {
-    // By default, antfu also triggers type rules on *.js files which causes all kinds of issues for us
-    files: options.files,
-    languageOptions: {
-      parserOptions: {
-        tsconfigRootDir: options.tsconfigRootDir,
-        project: options.project,
-      },
-    },
+module.exports = {
   rules: {
-      ...typeAwareRules,
     'ts/consistent-type-assertions': [ 'error', {
       assertionStyle: 'as',
     }],
@@ -93,14 +50,5 @@ module.exports = function(options) {
 
     // These are not type specific, but we only care about these in TS files
     'max-len': [ 'error', { code: 120, ignoreUrls: true }],
-      'unicorn/filename-case': [ 'error', {
-        cases: {
-          camelCase: true,
-          pascalCase: true,
-          kebabCase: false,
-          snakeCase: false,
   },
-      }],
-    },
-  };
 };

eslint/unicorn.js

@@ -1,4 +1,5 @@
 module.exports = {
+  name: 'opinionated:unicorn',
   rules: {
     'unicorn/better-regex': 'error',
     'unicorn/empty-brace-spaces': 'error',
@@ -9,18 +10,6 @@ module.exports = {
       allowWarningComments: false,
     }],
     'unicorn/explicit-length-check': 'error',
-    'unicorn/filename-case': [ 'error', {
-      cases: {
-        camelCase: false,
-        pascalCase: false,
-        kebabCase: true,
-        snakeCase: false,
-      },
-      ignore: [
-        // CODE_OF_CONDUCT.md, etc.
-        /[A-Z_]+\.md$/u,
-      ],
-    }],
     'unicorn/new-for-builtins': 'error',
     'unicorn/no-array-for-each': 'error',
     'unicorn/no-array-reduce': 'error',