convert from tslint

.eslintrc.js

@@ -0,0 +1,111 @@
+/*
+👋 Hi! This file was autogenerated by tslint-to-eslint-config.
+https://github.com/typescript-eslint/tslint-to-eslint-config
+
+It represents the closest reasonable ESLint configuration to this
+project's original TSLint configuration.
+
+We recommend eventually switching this configuration to extend from
+the recommended rulesets in typescript-eslint. 
+https://github.com/typescript-eslint/tslint-to-eslint-config/blob/master/docs/FAQs.md
+
+Happy linting! 💖
+*/
+module.exports = {
+    "env": {
+        "browser": true,
+        "es6": true
+    },
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "project": "tsconfig.json",
+        "sourceType": "module"
+    },
+    "plugins": [
+        "@typescript-eslint",
+        "@typescript-eslint/tslint"
+    ],
+    "rules": {
+        "@typescript-eslint/indent": [
+            "error",
+            2
+        ],
+        "@typescript-eslint/member-delimiter-style": [
+            "error",
+            {
+                "multiline": {
+                    "delimiter": "semi",
+                    "requireLast": true
+                },
+                "singleline": {
+                    "delimiter": "semi",
+                    "requireLast": false
+                }
+            }
+        ],
+        "@typescript-eslint/naming-convention": "error",
+        "@typescript-eslint/prefer-namespace-keyword": "error",
+        "@typescript-eslint/quotes": [
+            "error",
+            "single",
+            {
+                "avoidEscape": true
+            }
+        ],
+        "@typescript-eslint/semi": [
+            "error",
+            "always"
+        ],
+        "@typescript-eslint/type-annotation-spacing": "error",
+        "arrow-parens": [
+            "error",
+            "always"
+        ],
+        "brace-style": [
+            "error",
+            "1tbs"
+        ],
+        "comma-dangle": "error",
+        "eqeqeq": [
+            "error",
+            "smart"
+        ],
+        "id-denylist": [
+            "error",
+            "any",
+            "Number",
+            "number",
+            "String",
+            "string",
+            "Boolean",
+            "boolean",
+            "Undefined",
+            "undefined"
+        ],
+        "id-match": "error",
+        "indent": "error",
+        "no-eval": "error",
+        "no-redeclare": "error",
+        "no-trailing-spaces": "off",
+        "no-underscore-dangle": "error",
+        "no-var": "error",
+        "prefer-const": "error",
+        "quotes": "error",
+        "semi": "error",
+        "@typescript-eslint/tslint/config": [
+            "error",
+            {
+                "rules": {
+                    "whitespace": [
+                        true,
+                        "check-branch",
+                        "check-decl",
+                        "check-operator",
+                        "check-separator",
+                        "check-type"
+                    ]
+                }
+            }
+        ]
+    }
+};

package.json

@@ -7,7 +7,7 @@
   "types": "lib/rough-notation.d.ts",
   "scripts": {
     "build": "rm -rf lib && tsc && rollup -c",
-    "lint": "tslint -p tsconfig.json",
+    "lint": "eslint --fix --config .eslintrc.js",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "repository": {

tslint-to-eslint-config.log

@@ -0,0 +1,10 @@
+3 ESLint rules behave differently from their TSLint counterparts:
+  * brace-style:
+    - ESLint's brace-style will check all tokens.
+  * eqeqeq:
+    - Option "smart" allows for comparing two literal values, evaluating the value of typeof and null comparisons.
+  * no-underscore-dangle:
+    - Leading or trailing underscores (_) on identifiers will now be forbidden.
+
+1 rule is not known by tslint-to-eslint-config to have an ESLint equivalent:
+  * tslint-to-eslint-config does not know the ESLint equivalent for TSLint's "whitespace".