eslint.config.mjs

import prettier from "eslint-config-prettier"
import js from "@eslint/js"
import svelte from "eslint-plugin-svelte"
import globals from "globals"
import ts from "typescript-eslint"
import typescriptEslint from "@typescript-eslint/eslint-plugin"
import svelteParser from "svelte-eslint-parser"

export default ts.config(
  js.configs.recommended,
  ...ts.configs.recommended,
  ...svelte.configs["flat/recommended"],
  prettier,
  ...svelte.configs["flat/prettier"],
  {
    ignores: [
      "**/.DS_Store",
      "**/node_modules",
      "build",
      ".svelte-kit",
      "package",
      "**/.env",
      "**/.env.*",
      "!**/.env.example",
      "**/pnpm-lock.yaml",
      "**/package-lock.json",
      "**/yarn.lock"
    ]
  },
  {
    plugins: {
      "@typescript-eslint": typescriptEslint
    },

    languageOptions: {
      globals: {
        ...globals.browser,
        ...globals.node
      },

      parser: ts.parser,
      ecmaVersion: 2020,
      sourceType: "module",

      parserOptions: {
        extraFileExtensions: [".svelte"]
      }
    }
  },
  {
    files: ["**/*.svelte"],

    languageOptions: {
      parser: svelteParser,
      ecmaVersion: 5,
      sourceType: "script",

      parserOptions: {
        parser: "@typescript-eslint/parser"
      }
    }
  }
)