lint: migrated to flat config

Author: ram-amoncar

.eslintrc.json

@@ -0,0 +1,47 @@
+    'use strict'
+
+    import stylistic from '@stylistic/eslint-plugin'
+    import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended'
+    import jest from 'eslint-plugin-jest'
+    import love from 'eslint-config-love'
+
+    export default [
+        {
+            ignores: ['dist', '**/*.js']
+        },
+        // Stylistic
+        {
+            plugins: {
+                '@stylistic': stylistic
+            },
+            rules: {
+                '@stylistic/indent': ['error', 4],
+                '@stylistic/quotes': ['error', 'single', { avoidEscape: true, allowTemplateLiterals: true }],
+                '@stylistic/space-before-function-paren': 'off',
+                '@stylistic/no-unmodified-loop-condition': 'off'
+            }
+        },
+        // eslint-config-love
+        {
+            ...love
+        },
+        // Jest
+        {
+            files: ['test/**/*.test.ts', 'tests/**/*.test.ts', 'test/**/*.spec.ts', 'tests/**/*.spec.ts'],
+            ...jest.configs['flat/recommended'],
+            rules: {
+                ...jest.configs['flat/recommended'].rules,
+                ...jest.configs['flat/style'].rules
+            }
+        },
+        // Prettier
+        eslintPluginPrettierRecommended,
+        // Custom
+        {
+            rules:{
+                'max-nested-callbacks': 'off',
+                'max-lines': 'off'
+            },
+            files: ['tests/**.test.ts']
+        }
+    ]