eslint.config.mjs

import globals from "globals";
import pluginJs from "@eslint/js";
import html from "eslint-plugin-html";


export default [
	{
		languageOptions: {
			ecmaVersion: 2022,
			sourceType: "module",
			globals: {
				...globals.browser,
				__THREE__: "readonly"
			}
		},
		
		files: ["**/*.html", "**/*.js"],
		plugins: {html},
"settings": {
        "html/indent": "0",   // code should start at the beginning of the line (no initial indentation).
 //       "html/indent": "+2",  // indentation is the <script> indentation plus two spaces.
 //       "html/indent": "tab", // indentation is one tab at the beginning of the line.
    },
	
		"rules": {
			"array-bracket-spacing": ["error", "always", { "singleValue": true, "arraysInArrays": false }],
			"block-spacing": ["error", "always"],
			"brace-style": [ "error", "1tbs", { "allowSingleLine": true } ],
			"comma-spacing": ["error", { "before": false, "after": true }],
			"comma-style": [ 2, "last" ],
			"computed-property-spacing": ["error", "always"],
			"eol-last": ["error", "always"],
			"func-call-spacing": ["error", "never"],
			"indent": ["error", "tab", { "SwitchCase": 1 }],
			"key-spacing": ["error", { "beforeColon": false }],

			"new-parens": ["error"],
			"no-trailing-spaces": ["error", { "skipBlankLines": false }],
			"no-whitespace-before-property": ["error"],

			"object-curly-spacing": ["error", "always"],

			"padded-blocks": ["error", {
				"blocks": "always",
				"switches": "always",
				"classes": "always"
			}],

			"semi": ["error", "always", { "omitLastInOneLineBlock": true }],
			"semi-spacing": ["error", {"before": false, "after": true}],
			"space-before-blocks": ["error",  { "functions": "always", "keywords": "always", "classes": "always" }],
			"space-before-function-paren": ["error", {
				"anonymous": "always",
				"named": "never",
				"asyncArrow": "ignore"
			}],
			// was: "space-in-parens": ["error", "always" ],
			"space-in-parens": ["error", "always", { "exceptions": ["[]"] } ],
			// was: "space-infix-ops": ["error"],
			"space-unary-ops": ["error", {
				"words": true,
				"nonwords": false,
				"overrides": {
				}
			}],

			"keyword-spacing": ["error", { "before": true, "after": true }],
			"padding-line-between-statements": [
				"error",
				{ "blankLine": "always", "prev": "block-like", "next": "*" }
			],

			/* Best Practices */
			
			// "eqeqeq": 0,					// Require === and !==
			// "new-cap": 0,				// Disallow captialized function to be used without new.
			"no-multi-spaces": 2,			// Don't care if there's more than one space anywhere.
			// was: // "no-unused-expressions": 0,  // Don't care if there are unused experssions. eg "flag && doThing();"
			"no-unused-expressions": "error",  // Care if there are unused experssions. eg "flag && doThing();"
			// "consistent-return": 0,      // Don't care if some returns return no value

			/* Variables */
			
			"no-undef": 1,
			"no-unused-vars": 1,

			/* Possible Errors */
			
			"no-extra-semi": 1,					// Disallow extra semicolons. Example function foo() { };


			// "camelcase": 0,					// Disallow names_with_underscore
			// "no-mixed-spaces-and-tabs": 0,	// Disallow both spaces and tabs in the same line for indenting
			// "strict": 0,						// Require "use strict"

			// "yoda": 0,				// Don't care if it's "if (1 == v)" or "if (v == 123)".
			// "no-empty": 0,					// Don't care if we have empty blocks
			// "no-shadow": 0,					// Don't care if the same variable name is used in an inner scope.

			// "dot-notation": 0,				// Don't care if it's obj["prop"] instead of obj.prop
			// "no-console": 0,					// allow the use of console
			// "curly": 0,						// Don't require all if statements to have curly braces
			// "no-redeclare": 0,				// Don't care if var declared more than once in same scope. eg for (var x, ...) for (var x, ...);
			// "quotes": 0,						// Don't care if quotes are double or single
			// "no-use-before-define": 0,		// don't care if something is used before it's defined.
			// "no-underscore-dangle": 0,		// don't care if var starts with underscore
			
			"sort-imports": ["error", {
				"ignoreCase": true,
				"ignoreDeclarationSort": true,
				"ignoreMemberSort": false,
				"memberSyntaxSortOrder": ["none", "all", "multiple", "single"],
				"allowSeparatedGroups": false
			}],
		}
	}
];