eslint.config.js

import { defineConfig } from "eslint/config";
import globals from "globals";

import js from "@eslint/js";
import jest from "eslint-plugin-jest";
import json from "@eslint/json";
import jsonc from "eslint-plugin-jsonc";
import markdown from "@eslint/markdown";
import eslintConfigPrettier from "eslint-config-prettier/flat";

export default defineConfig([
	{
		ignores: ["**/node_modules/**", ".yarn/**", ".cache/**", "scripts/template/**", "dist/**", "coverage/**"],
	},
	{
		files: ["**/*.js"],
		plugins: { js },
		extends: ["js/recommended"],
		languageOptions: {
			sourceType: "module",
			globals: globals.node,
		},
		rules: {
			eqeqeq: ["error", "smart"],
			"no-var": "error",
			"prefer-const": "error",
			"no-unused-vars": ["error", { argsIgnorePattern: "^_", varsIgnorePattern: "^_", caughtErrors: "none" }],
			// Logs should be written through @actions/core & fails via
			// core.setFailed — never the raw console or a hard process exit.
			"no-console": "error",
			"no-process-exit": "error",
			// Don't let unfinished markers ride along into a published action.
			"no-warning-comments": ["warn", { terms: ["todo", "fixme", "xxx"], location: "anywhere" }],
		},
	},
	// Specific to tooling and repository-management scripts.
	{
		files: ["scripts/**/*.js"],
		rules: {
			"no-console": "off",
			"no-process-exit": "off",
			"no-warning-comments": "off",
		},
	},
	{
		files: ["**/*.test.js"],
		plugins: { jest },
		extends: ["jest/recommended"],
		languageOptions: {
			globals: jest.environments.globals.globals,
		},
	},
	{
		// All JSON except package.json, which has its own jsonc block below.
		files: ["**/*.json"],
		ignores: ["**/package.json"],
		plugins: { json },
		language: "json/json",
		extends: ["json/recommended"],
		rules: {
			"json/sort-keys": [
				"warn",
				"asc",
				{
					natural: true,
				}
			],
		},
	},
	{
		files: ["package.json"],
		plugins: { jsonc },
		language: "jsonc/jsonc",
		extends: ["jsonc/recommended-with-json"],
		rules: {
			"jsonc/sort-keys": [
				"warn",
				{
					pathPattern: "^$",
					order: ["$schema", "private", "publishConfig", "name", "version", "description", "license", "author", "maintainers", "contributors", "homepage", "funding", "repository", "bugs", "type", "exports", "main", "module", "browser", "man", "preferGlobal", "bin", "files", "directories", "scripts", "config", "sideEffects", "types", "typings", "workspaces", "resolutions", "dependencies", "bundleDependencies", "bundledDependencies", "peerDependencies", "peerDependenciesMeta", "optionalDependencies", "devDependencies", "keywords", "engines", "engineStrict", "os", "cpu", "*", "packageManager"],
				},
				{ pathPattern: "^repository$", order: ["type", "url", "directory"] },
				{ pathPattern: "^vague$", order: { type: "asc" } },
				{ pathPattern: "^exports$", order: ["."] },
				{ pathPattern: ".*", order: { type: "asc" } },
			],
		},
	},
	{
		files: ["**/*.md"],
		plugins: { markdown },
		language: "markdown/gfm",
		extends: ["markdown/recommended"],
	},
	eslintConfigPrettier,
]);