eslint.config.js

/// <reference types="./types/eslint.d.ts" />

import * as path from "node:path"
import { fixupPluginRules, includeIgnoreFile } from "@eslint/compat"
import eslint from "@eslint/js"
import nextPlugin from "@next/eslint-plugin-next"
import importPlugin from "eslint-plugin-import"
import packageJson from "eslint-plugin-package-json/configs/recommended"
import reactPlugin from "eslint-plugin-react"
import hooksPlugin from "eslint-plugin-react-hooks"
import tseslint from "typescript-eslint"

/**
 * All packages that leverage t3-env should use this rule
 */
export const restrictEnvAccess = tseslint.config({
  files: ["**/*.js", "**/*.ts", "**/*.tsx"],
  rules: {
    "no-restricted-properties": [
      "error",
      {
        object: "process",
        property: "env",
        message:
          "Use `import { env } from '~/env'` instead to ensure validated types.",
      },
    ],
    "no-restricted-imports": [
      "error",
      {
        name: "process",
        importNames: ["env"],
        message:
          "Use `import { env } from '~/env'` instead to ensure validated types.",
      },
    ],
  },
})

export default tseslint.config(
  // Ignore files not tracked by VCS and any config files
  includeIgnoreFile(path.join(import.meta.dirname, "./.gitignore")),
  { ignores: ["**/*.config.*"] },
  {
    ...packageJson,
    rules: {
      ...packageJson.rules,
      "package-json/valid-package-def": "off",
    },
  },
  {
    files: ["**/*.js", "**/*.ts", "**/*.tsx"],
    plugins: {
      import: importPlugin,
    },
    extends: [
      eslint.configs.recommended,
      ...tseslint.configs.recommended,
      ...tseslint.configs.recommendedTypeChecked,
      ...tseslint.configs.stylisticTypeChecked,
    ],
    rules: {
      "@typescript-eslint/no-unused-vars": [
        "error",
        { argsIgnorePattern: "^_", varsIgnorePattern: "^_" },
      ],
      "@typescript-eslint/consistent-type-imports": [
        "warn",
        { prefer: "type-imports", fixStyle: "separate-type-imports" },
      ],
      "@typescript-eslint/no-misused-promises": [
        2,
        { checksVoidReturn: { attributes: false } },
      ],
      "@typescript-eslint/no-unnecessary-condition": [
        "error",
        {
          allowConstantLoopConditions: true,
        },
      ],
      "@typescript-eslint/no-non-null-assertion": "error",
      "import/consistent-type-specifier-style": ["error", "prefer-top-level"],
      "@typescript-eslint/only-throw-error": "off",
    },
  },
  {
    linterOptions: { reportUnusedDisableDirectives: true },
    languageOptions: { parserOptions: { projectService: true } },
  },
  {
    files: ["**/*.ts", "**/*.tsx"],
    plugins: {
      react: reactPlugin,
      "react-hooks": fixupPluginRules(hooksPlugin),
    },
    rules: {
      ...reactPlugin.configs["jsx-runtime"].rules,
      ...hooksPlugin.configs.recommended.rules,
    },
    languageOptions: {
      globals: {
        React: "writable",
      },
    },
  },
  {
    files: ["**/*.ts", "**/*.tsx"],
    plugins: {
      "@next/next": nextPlugin,
    },
    rules: {
      ...nextPlugin.configs.recommended.rules,
      ...nextPlugin.configs["core-web-vitals"].rules,
      // TypeError: context.getAncestors is not a function
      "@next/next/no-duplicate-head": "off",
    },
  },
)