linting fixes

Author: gurvinder-dhillon

.eslintrc.json

@@ -0,0 +1,7 @@
+{
+  "singleQuote": true,
+  "trailingComma": "es5",
+  "tabWidth": 2,
+  "semi": true,
+  "printWidth": 80
+}

.prettierrc

@@ -0,0 +1,177 @@
+import typescriptEslint from "@typescript-eslint/eslint-plugin";
+import tsParser from "@typescript-eslint/parser";
+import path from "path";
+import { fileURLToPath } from "url";
+import stylistic from "@stylistic/eslint-plugin";
+import importRules from "eslint-plugin-import";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const plugins = {
+  "@stylistic": stylistic,
+  "@typescript-eslint": typescriptEslint,
+  import: importRules,
+};
+
+export const baseRules = {
+  "import/extensions": ["error", "ignorePackages", {ts: "always"}],
+  "@typescript-eslint/no-floating-promises": "error",
+  "@typescript-eslint/no-unused-vars": [
+    2,
+    { args: "none", caughtErrors: "none" },
+  ],
+
+  /**
+   * Enforced rules
+   */
+  // syntax preferences
+  "object-curly-spacing": ["error", "always"],
+  quotes: [
+    2,
+    "single",
+    {
+      avoidEscape: true,
+      allowTemplateLiterals: true,
+    },
+  ],
+  "jsx-quotes": [2, "prefer-single"],
+  "no-extra-semi": 2,
+  "@stylistic/semi": [2],
+  "comma-style": [2, "last"],
+  "wrap-iife": [2, "inside"],
+  "spaced-comment": [
+    2,
+    "always",
+    {
+      markers: ["*"],
+    },
+  ],
+  eqeqeq: [2],
+  "accessor-pairs": [
+    2,
+    {
+      getWithoutSet: false,
+      setWithoutGet: false,
+    },
+  ],
+  "brace-style": [2, "1tbs", { allowSingleLine: true }],
+  curly: [2, "multi-or-nest", "consistent"],
+  "new-parens": 2,
+  "arrow-parens": [2, "as-needed"],
+  "prefer-const": 2,
+  "quote-props": [2, "consistent"],
+  "nonblock-statement-body-position": [2, "below"],
+
+  // anti-patterns
+  "no-var": 2,
+  "no-with": 2,
+  "no-multi-str": 2,
+  "no-caller": 2,
+  "no-implied-eval": 2,
+  "no-labels": 2,
+  "no-new-object": 2,
+  "no-octal-escape": 2,
+  "no-self-compare": 2,
+  "no-shadow-restricted-names": 2,
+  "no-cond-assign": 2,
+  "no-debugger": 2,
+  "no-dupe-keys": 2,
+  "no-duplicate-case": 2,
+  "no-empty-character-class": 2,
+  "no-unreachable": 2,
+  "no-unsafe-negation": 2,
+  radix: 2,
+  "valid-typeof": 2,
+  "no-implicit-globals": [2],
+  "no-unused-expressions": [
+    2,
+    { allowShortCircuit: true, allowTernary: true, allowTaggedTemplates: true },
+  ],
+  "no-proto": 2,
+
+  // es2015 features
+  "require-yield": 2,
+  "template-curly-spacing": [2, "never"],
+
+  // spacing details
+  "space-infix-ops": 2,
+  "space-in-parens": [2, "never"],
+  "array-bracket-spacing": [2, "never"],
+  "comma-spacing": [2, { before: false, after: true }],
+  "keyword-spacing": [
+    2,
+    {
+      overrides: {
+        if: { after: true },
+        else: { after: true },
+        for: { after: true },
+        while: { after: true },
+        do: { after: true },
+        switch: { after: true },
+        return: { after: true },
+      },
+    },
+  ],
+  "space-before-function-paren": [
+    2,
+    {
+      anonymous: "never",
+      named: "never",
+      asyncArrow: "always",
+    },
+  ],
+  "no-whitespace-before-property": 2,
+  "arrow-spacing": [
+    2,
+    {
+      after: true,
+      before: true,
+    },
+  ],
+  "@stylistic/func-call-spacing": 2,
+  "@stylistic/type-annotation-spacing": 2,
+
+  // file whitespace
+  "no-multiple-empty-lines": [2, { max: 2, maxEOF: 0 }],
+  "no-mixed-spaces-and-tabs": 2,
+  "no-trailing-spaces": 2,
+  "linebreak-style": [process.platform === "win32" ? 0 : 2, "unix"],
+  indent: [
+    2,
+    2,
+    { SwitchCase: 1, CallExpression: { arguments: 2 }, MemberExpression: 2 },
+  ],
+  "key-spacing": [
+    2,
+    {
+      beforeColon: false,
+    },
+  ],
+  "eol-last": 2,
+
+  // react
+  "react/react-in-jsx-scope": 0,
+  "no-console": ["warn", { "allow": ["warn", "error"] }],
+};
+
+const languageOptions = {
+  parser: tsParser,
+  ecmaVersion: 9,
+  sourceType: "module",
+  parserOptions: {
+    project: path.join(__dirname, "tsconfig.json"),
+  }
+};
+
+export default [
+  {
+    ignores: ["dist/**", "node_modules/**", "**/*.js"],
+  },
+  {
+    files: ["src/**/*.ts"],
+    plugins,
+    languageOptions,
+    rules: baseRules,
+  },
+];