eslint.config.js

import eslint from "@eslint/js";
import comments from "@eslint-community/eslint-plugin-eslint-comments/configs";
import vitest from "@vitest/eslint-plugin";
import jsdoc from "eslint-plugin-jsdoc";
import n from "eslint-plugin-n";
import packageJson from "eslint-plugin-package-json/configs/recommended";
import perfectionist from "eslint-plugin-perfectionist";
import * as regexp from "eslint-plugin-regexp";
import tseslint from "typescript-eslint";

export default tseslint.config(
	{
		ignores: [
			"coverage*",
			"lib",
			"node_modules",
			"pnpm-lock.yaml",
			"**/*.snap",
		],
	},
	{
		linterOptions: {
			reportUnusedDisableDirectives: "error",
		},
	},
	eslint.configs.recommended,
	comments.recommended,
	jsdoc.configs["flat/contents-typescript-error"],
	jsdoc.configs["flat/logical-typescript-error"],
	jsdoc.configs["flat/stylistic-typescript-error"],
	n.configs["flat/recommended"],
	packageJson,
	perfectionist.configs["recommended-natural"],
	regexp.configs["flat/recommended"],
	...tseslint.config({
		extends: [
			...tseslint.configs.strictTypeChecked,
			...tseslint.configs.stylisticTypeChecked,
		],
		files: ["**/*.js", "**/*.ts"],
		languageOptions: {
			parserOptions: {
				projectService: {
					allowDefaultProject: ["*.*s", "eslint.config.js"],
					defaultProject: "./tsconfig.json",
				},
				tsconfigRootDir: import.meta.dirname,
			},
		},
		rules: {
			// These on-by-default rules work well for this repo if configured
			"@typescript-eslint/no-unused-vars": [
				"error",
				{
					args: "all",
					argsIgnorePattern: "^_",
					caughtErrors: "all",
					caughtErrorsIgnorePattern: "^_",
					destructuredArrayIgnorePattern: "^_",
					varsIgnorePattern: "^_",
					ignoreRestSiblings: true,
				},
			],
			// These on-by-default rules don't work well for this repo and we like them off.
			"jsdoc/lines-before-block": "off",

			// These off-by-default rules work well for this repo and we like them on.
			"logical-assignment-operators": [
				"error",
				"always",
				{ enforceForIfStatements: true },
			],
			"n/no-unsupported-features/node-builtins": [
				"error",
				{ allowExperimental: true },
			],

			"no-constant-condition": "off",
			// Stylistic concerns that don't interfere with Prettier
			"no-useless-rename": "error",
			"object-shorthand": "error",
			// "perfectionist/sort-objects": [
			// 	"error",
			// 	{
			// 		order: "asc",
			// 		partitionByComment: true,
			// 		type: "natural",
			// 	},
			// ],

			"operator-assignment": "error",
			"perfectionist/sort-objects": ["off"],
			"perfectionist/sort-object-types": ["off"],

			"jsdoc/match-description": "off",
		},
	}),
	{
		files: ["*.jsonc"],
		rules: {
			"jsonc/comma-dangle": "off",
			"jsonc/no-comments": "off",
			"jsonc/sort-keys": "error",
		},
	},
	{
		extends: [tseslint.configs.disableTypeChecked],
		files: ["**/*.md/*.ts"],
		rules: {
			"n/no-missing-import": ["error", { allowModules: ["azdo-npm-auth"] }],
		},
	},
	{
		files: ["**/*.test.*"],
		languageOptions: {
			globals: vitest.environments.env.globals,
		},
		plugins: { vitest },
		rules: {
			...vitest.configs.recommended.rules,

			// These on-by-default rules aren't useful in test files.
			"@typescript-eslint/no-unsafe-assignment": "off",
			"@typescript-eslint/no-unsafe-call": "off",
		},
	},
);