Use a stricter eslintrc

.eslintrc.json

@@ -0,0 +1,243 @@
+{
+    "root": true,
+    "ignorePatterns": [],
+    "parser": "@typescript-eslint/parser",
+    "plugins": [
+      "@typescript-eslint",
+      "jest"
+    ],
+    "extends": [
+      "eslint:recommended",
+      "plugin:@typescript-eslint/recommended",
+      "plugin:svelte/recommended"
+    ],
+    "parserOptions": {
+      "ecmaVersion": 2022,
+      "ecmaFeatures": {
+        "jsx": true
+      },
+      "sourceType": "module",
+      "project": "./tsconfig.json"
+    },
+    "env": {
+      "es2021": true,
+      "node": true,
+      "jest": true
+    },
+    "globals": {
+      "document": "readonly",
+      "navigator": "readonly",
+      "window": "readonly"
+    },
+    "rules": {
+      // "no-unused-vars": ["error", {
+      //   "args": "none",
+      //   "caughtErrors": "none",
+      //   "ignoreRestSiblings": true,
+      //   "vars": "all"
+      // }],
+
+      "@typescript-eslint/no-floating-promises": "error",
+
+      // Everything below here is standard 1531
+
+      "@typescript-eslint/no-var-requires": 0,
+      "@typescript-eslint/no-unused-vars": 0,
+      "@typescript-eslint/no-explicit-any": 0,
+
+      "no-var": "warn",
+      "object-shorthand": 0, // ["warn", "properties"],
+
+      "accessor-pairs": ["error", { "setWithoutGet": true, "enforceForClassMembers": true }],
+      "array-bracket-spacing": ["error", "never"],
+      "array-callback-return": ["error", {
+        "allowImplicit": false,
+        "checkForEach": false
+      }],
+      "arrow-spacing": ["error", { "before": true, "after": true }],
+      "block-spacing": ["error", "always"],
+      "brace-style": ["error", "1tbs", { "allowSingleLine": true }],
+      "camelcase": ["error", {
+        "allow": ["^UNSAFE_"],
+        "properties": "never",
+        "ignoreGlobals": true,
+        "ignoreDestructuring": true
+      }],
+      "comma-dangle": ["error", {
+        "arrays": "only-multiline",
+        "objects": "only-multiline",
+        "imports": "only-multiline",
+        "exports": "only-multiline",
+        "functions": "only-multiline"
+      }],
+      "comma-spacing": ["error", { "before": false, "after": true }],
+      "comma-style": ["error", "last"],
+      "computed-property-spacing": ["error", "never", { "enforceForClassMembers": true }],
+      "constructor-super": "error",
+      "curly": ["error", "multi-line"],
+      "default-case-last": "error",
+      "dot-location": ["error", "property"],
+      "dot-notation": ["error", { "allowKeywords": true }],
+      "eol-last": "error",
+      "eqeqeq": ["error", "always", { "null": "ignore" }],
+      "func-call-spacing": ["error", "never"],
+      "generator-star-spacing": ["error", { "before": true, "after": true }],
+      "indent": ["error", 2, {
+        "SwitchCase": 1,
+        "VariableDeclarator": 1,
+        "outerIIFEBody": 1,
+        "MemberExpression": 1,
+        "FunctionDeclaration": { "parameters": 1, "body": 1 },
+        "FunctionExpression": { "parameters": 1, "body": 1 },
+        "CallExpression": { "arguments": 1 },
+        "ArrayExpression": 1,
+        "ObjectExpression": 1,
+        "ImportDeclaration": 1,
+        "flatTernaryExpressions": false,
+        "ignoreComments": false,
+        "ignoredNodes": ["TemplateLiteral *", "JSXElement", "JSXElement > *", "JSXAttribute", "JSXIdentifier", "JSXNamespacedName", "JSXMemberExpression", "JSXSpreadAttribute", "JSXExpressionContainer", "JSXOpeningElement", "JSXClosingElement", "JSXFragment", "JSXOpeningFragment", "JSXClosingFragment", "JSXText", "JSXEmptyExpression", "JSXSpreadChild"],
+        "offsetTernaryExpressions": true
+      }],
+      "key-spacing": ["error", { "beforeColon": false, "afterColon": true }],
+      "keyword-spacing": ["error", { "before": true, "after": true }],
+      "lines-between-class-members": ["error", "always", { "exceptAfterSingleLine": true }],
+      "multiline-ternary": ["error", "always-multiline"],
+      "new-cap": ["error", { "newIsCap": true, "capIsNew": false, "properties": true }],
+      "new-parens": "error",
+      "no-array-constructor": "error",
+      "no-async-promise-executor": "error",
+      "no-caller": "error",
+      "no-case-declarations": "error",
+      "no-class-assign": "error",
+      "no-compare-neg-zero": "error",
+      "no-cond-assign": "error",
+      "no-const-assign": "error",
+      "no-constant-condition": ["error", { "checkLoops": false }],
+      "no-control-regex": "error",
+      "no-debugger": "error",
+      "no-delete-var": "error",
+      "no-dupe-args": "error",
+      "no-dupe-class-members": "error",
+      "no-dupe-keys": "error",
+      "no-duplicate-case": "error",
+      "no-useless-backreference": "error",
+      "no-empty": ["error", { "allowEmptyCatch": true }],
+      "no-empty-character-class": "error",
+      "no-empty-pattern": "error",
+      "no-eval": "error",
+      "no-ex-assign": "error",
+      "no-extend-native": "error",
+      "no-extra-bind": "error",
+      "no-extra-boolean-cast": "error",
+      "no-extra-parens": ["error", "functions"],
+      "no-fallthrough": "error",
+      "no-floating-decimal": "error",
+      "no-func-assign": "error",
+      "no-global-assign": "error",
+      "no-implied-eval": "error",
+      "no-import-assign": "error",
+      "no-invalid-regexp": "error",
+      "no-irregular-whitespace": "error",
+      "no-iterator": "error",
+      "no-labels": ["error", { "allowLoop": false, "allowSwitch": false }],
+      "no-lone-blocks": "error",
+      "no-loss-of-precision": "error",
+      "no-misleading-character-class": "error",
+      "no-prototype-builtins": "error",
+      "no-useless-catch": "error",
+      "no-mixed-operators": ["error", {
+        "groups": [
+          ["==", "!=", "===", "!==", ">", ">=", "<", "<="],
+          ["&&", "||"],
+          ["in", "instanceof"]
+        ],
+        "allowSamePrecedence": true
+      }],
+      "no-mixed-spaces-and-tabs": "error",
+      "no-multi-spaces": "error",
+      "no-multi-str": "error",
+      "no-multiple-empty-lines": ["error", { "max": 1, "maxEOF": 0 }],
+      "no-new": "error",
+      "no-new-func": "error",
+      "no-new-object": "error",
+      "no-new-symbol": "error",
+      "no-new-wrappers": "error",
+      "no-obj-calls": "error",
+      "no-octal": "error",
+      "no-octal-escape": "error",
+      "no-proto": "error",
+      "no-redeclare": ["error", { "builtinGlobals": false }],
+      "no-regex-spaces": "error",
+      "no-return-assign": ["error", "except-parens"],
+      "no-self-assign": ["error", { "props": true }],
+      "no-self-compare": "error",
+      "no-sequences": "error",
+      "no-shadow-restricted-names": "error",
+      "no-sparse-arrays": "error",
+      "no-tabs": "error",
+      "no-template-curly-in-string": "error",
+      "no-this-before-super": "error",
+      "no-throw-literal": "error",
+      "no-trailing-spaces": "error",
+      "no-undef": "error",
+      "no-undef-init": "error",
+      "no-unexpected-multiline": "error",
+      "no-unmodified-loop-condition": "error",
+      "no-unneeded-ternary": ["error", { "defaultAssignment": false }],
+      "no-unreachable": "error",
+      "no-unreachable-loop": "error",
+      "no-unsafe-finally": "error",
+      "no-unsafe-negation": "error",
+      "no-unused-expressions": ["error", {
+        "allowShortCircuit": true,
+        "allowTernary": true,
+        "allowTaggedTemplates": true
+      }],
+
+      "no-use-before-define": ["error", { "functions": false, "classes": false, "variables": false }],
+      "no-useless-call": "error",
+      "no-useless-computed-key": "error",
+      "no-useless-constructor": "error",
+      "no-useless-escape": "error",
+      "no-useless-rename": "error",
+      "no-useless-return": "error",
+      "no-void": "error",
+      "no-whitespace-before-property": "error",
+      "no-with": "error",
+      "object-curly-newline": ["error", { "multiline": true, "consistent": true }],
+      "object-curly-spacing": ["error", "always"],
+      "object-property-newline": ["error", { "allowMultiplePropertiesPerLine": true }],
+      "one-var": ["error", { "initialized": "never" }],
+      "operator-linebreak": ["error", "after", { "overrides": { "?": "before", ":": "before", "|>": "before" } }],
+      "padded-blocks": ["error", { "blocks": "never", "switches": "never", "classes": "never" }],
+      "prefer-const": ["error", {"destructuring": "all"}],
+      "prefer-promise-reject-errors": "error",
+      "prefer-regex-literals": ["error", { "disallowRedundantWrapping": true }],
+      "quote-props": ["error", "as-needed"],
+      "quotes": ["error", "single", { "avoidEscape": true, "allowTemplateLiterals": false }],
+      "rest-spread-spacing": ["error", "never"],
+      "semi": [2, "always"],
+      "semi-spacing": ["error", { "before": false, "after": true }],
+      "space-before-blocks": ["error", "always"],
+      "space-before-function-paren": ["off"],
+      "space-in-parens": ["error", "never"],
+      "space-infix-ops": "error",
+      "space-unary-ops": ["error", { "words": true, "nonwords": false }],
+      "spaced-comment": ["error", "always", {
+        "line": { "markers": ["*package", "!", "/", ",", "="] },
+        "block": { "balanced": true, "markers": ["*package", "!", ",", ":", "::", "flow-include"], "exceptions": ["*"] }
+      }],
+      "symbol-description": "error",
+      "template-curly-spacing": ["error", "never"],
+      "template-tag-spacing": ["error", "never"],
+      "unicode-bom": ["error", "never"],
+      "use-isnan": ["error", {
+        "enforceForSwitchCase": true,
+        "enforceForIndexOf": true
+      }],
+      "valid-typeof": ["error", { "requireStringLiterals": true }],
+      "wrap-iife": ["error", "any", { "functionPrototypeMethods": true }],
+      "yield-star-spacing": ["error", "both"],
+      "yoda": ["error", "never"]
+    }
+  }