// @ts-check
import eslint from "@eslint/js";
import tseslint from "typescript-eslint";
import globals from "globals";
import prettier from "eslint-config-prettier";
export default tseslint.config(
// Global ignore patterns
{
ignores: ["build/**", "dist/**", "node_modules/**", "*.js", "*.mjs"],
},
// Base ESLint recommended rules
eslint.configs.recommended,
// TypeScript ESLint recommended rules
...tseslint.configs.recommended,
// TypeScript ESLint stylistic rules
...tseslint.configs.stylistic,
// Main configuration for TypeScript files
{
files: ["**/*.ts", "**/*.tsx"],
languageOptions: {
ecmaVersion: "latest",
sourceType: "module",
globals: {
...globals.node,
...globals.es2022,
},
parser: tseslint.parser,
parserOptions: {
projectService: true,
tsconfigRootDir: import.meta.dirname,
},
},
plugins: {
"@typescript-eslint": tseslint.plugin,
},
rules: {
// ESLint rules
"prefer-const": "error",
"no-var": "error",
"no-console": "warn",
eqeqeq: ["error", "always"],
// TypeScript ESLint rules
"@typescript-eslint/no-unused-vars": [
"error",
{
argsIgnorePattern: "^_",
varsIgnorePattern: "^_",
},
],
"@typescript-eslint/explicit-function-return-type": "off",
"@typescript-eslint/no-explicit-any": "warn",
"@typescript-eslint/no-inferrable-types": "error",
"@typescript-eslint/consistent-type-imports": [
"error",
{
prefer: "type-imports",
fixStyle: "separate-type-imports",
},
],
// Stylistic rules
"@typescript-eslint/prefer-nullish-coalescing": [
"warn",
{
ignoreConditionalTests: true,
ignoreMixedLogicalExpressions: true,
ignorePrimitives: {
string: true,
},
},
],
"@typescript-eslint/prefer-optional-chain": "error",
},
},
// Configuration for JavaScript files (if any)
{
files: ["**/*.js", "**/*.mjs"],
languageOptions: {
ecmaVersion: "latest",
sourceType: "module",
globals: {
...globals.node,
},
},
rules: {
"prefer-const": "error",
"no-var": "error",
"no-console": "warn",
},
},
// Configuration for test files
{
files: ["**/*.test.ts", "**/*.spec.ts", "**/__tests__/**/*.ts"],
languageOptions: {
globals: {
...globals.jest,
},
},
rules: {
"@typescript-eslint/no-explicit-any": "off",
"no-console": "off",
},
},
// Prettier configuration - MUST be last to override other configs
prettier
);
