calculator

import { defineConfig, globalIgnores } from 'eslint/config';
import globals from 'globals';
import js from '@eslint/js';
import ts from 'typescript-eslint';
import stylistic from '@stylistic/eslint-plugin';

const commonRules = {
	// JavaScript
	"indent": ["error", 'tab', {
		"SwitchCase": 1,
		"ignoredNodes": [
			"IfStatement > LogicalExpression",
			"WhileStatement > LogicalExpression",
			"ConditionalExpression",
			"ArrowFunctionExpression",
		]
	}],
	"camelcase": ["warn"],
	"space-before-blocks": ["error", "always"],
	"no-whitespace-before-property": "error",
	"no-unexpected-multiline": "off",
	"func-call-spacing": "off",
	"function-call-argument-newline": ["error", "consistent"],
	"function-paren-newline": "off",
	"no-mixed-spaces-and-tabs": "error",
	"no-trailing-spaces": ["error", { "skipBlankLines": true }],
	"semi": ["error", "always"],
	"no-var": "error",
	"no-unused-vars": "off",
	"linebreak-style": ["error", "unix"],
	"operator-linebreak": "off",
	"keyword-spacing": "off",
	"space-unary-ops": ["error", {
		"words": true,
		"nonwords": false,
		"overrides": { "typeof": false },
	}],
	"arrow-spacing": ["error", { "before": true, "after": true }],
	"key-spacing": ["error", {
		"multiLine": { "beforeColon": false, "afterColon": true, "mode": "minimum" },
		"singleLine": { "beforeColon": false, "afterColon": true, "mode": "strict" },
	}],
	"dot-location": ["error", "property"],
	"no-irregular-whitespace": ["error", {
		"skipStrings": true,
		"skipComments": true,
		"skipRegExps": true,
		"skipTemplates": true,
	}],

	// TypeScript
	"@typescript-eslint/no-unused-vars": "off",
	"@typescript-eslint/no-explicit-any": ["error", { "fixToUnknown": true }],

	// Stylistic
	"@stylistic/brace-style": ["warn", "stroustrup", { "allowSingleLine": true }],
	"@stylistic/indent": ["error", 'tab', {
		"offsetTernaryExpressions": true,
		"SwitchCase": 1,
		"ignoredNodes": [
			"IfStatement > LogicalExpression",
			"WhileStatement > LogicalExpression",
			"ConditionalExpression",
		]
	}],
	"@stylistic/comma-dangle": ["warn", {
		"functions": "only-multiline",
		"arrays": "only-multiline",
		"objects": "only-multiline",
		"imports": "always-multiline",
		"exports": "always-multiline",
		"enums": "always-multiline",
		"generics": "always-multiline",
		"tuples": "always-multiline",
	}],
	"@stylistic/keyword-spacing": ["error", {
		"before": true,
		"after": true,
		"overrides": {
			"function": { "before": true, "after": false },
			"super": { "before": true, "after": false },
			"typeof": { "before": true, "after": false },
			"default": { "before": true, "after": false },
			"this": { "before": true, "after": false },
		}
	}],
	"@stylistic/space-before-function-paren": ["error", {
		"anonymous": "never",
		"named": "never",
		"asyncArrow": "always",
	}],
	"@stylistic/type-annotation-spacing": ["error", {
		"before": false,
		"after": false,
		"overrides": { "arrow": { "before": true, "after": true } }
	}],
} as object;

export default defineConfig(
	globalIgnores(['**/dist/**', '**/dist-ssr/**', '**/coverage/**', '**/node_modules/**']),

	js.configs.recommended,
	...ts.configs.recommended,

	{
		files: ['**/*.ts'],
		languageOptions: {
			parser: ts.parser,
			parserOptions: {
				ecmaFeatures: { jsx: true },
			},
			globals: { ...globals.node },
		},
		plugins: {
			'@stylistic': stylistic,
		},
		rules: {
			...commonRules,
		},
	},
);