added default eslint and babel rc files

Author: dasiux

src/babelrc.json

@@ -0,0 +1,11 @@
+{
+  "presets": [
+    [
+      "@babel/preset-env",
+      {
+        "targets": {"browsers": [ "> 2%", "last 2 versions" ]},
+        "modules": false
+      }
+    ]
+  ]
+}

src/eslintrc.json

@@ -0,0 +1,133 @@
+{
+  "env": {
+    "browser": true,
+    "es6": true,
+    "es2021": true
+  },
+  "extends": "eslint:recommended",
+  "parser": "@babel/eslint-parser",
+  "parserOptions": {
+    "ecmaVersion": 2020,
+    "sourceType": "module"
+  },
+
+  "rules": {
+    "strict": 2,
+
+    "for-direction": 2,
+    "getter-return": 2,
+    "no-compare-neg-zero": 2,
+    "no-cond-assign": [ 2, "except-parens" ],
+    "no-console": 1,
+    "no-constant-condition": 2,
+    "no-control-regex": 2,
+    "no-debugger": 2,
+    "no-dupe-args": 2,
+    "no-dupe-keys": 2,
+    "no-duplicate-case": 2,
+    "no-empty-character-class": 2,
+    "no-empty": 2,
+    "no-ex-assign": 2,
+    "no-extra-boolean-cast": 2,
+    "no-extra-parens": [ 1, "all" ],
+    "no-extra-semi": 2,
+    "no-func-assign": 2,
+    "no-inner-declarations": [ 2, "functions" ],
+    "no-invalid-regexp": 2,
+    "no-irregular-whitespace": 2,
+    "no-obj-calls": 2,
+    "no-prototype-builtins": 2,
+    "no-regex-spaces": 2,
+    "no-sparse-arrays": 2,
+    "no-unexpected-multiline": 2,
+    "no-unreachable": 2,
+    "no-unsafe-finally": 1,
+    "no-unsafe-negation": 2,
+    "use-isnan": 2,
+    "valid-jsdoc": 2,
+    "valid-typeof": 2,
+
+    "no-delete-var": 2,
+    "no-label-var": 2,
+    "no-shadow": 2,
+    "no-shadow-restricted-names": 2,
+    "no-undef": [ 2, { "typeof": true } ],
+    "no-undef-init": 2,
+    "no-undefined": 2,
+    "no-unused-vars": 2,
+    "no-use-before-define": 2,
+
+    "arrow-body-style": [ 2, "always" ],
+    "arrow-parens": [ 2, "always" ],
+    "arrow-spacing": [ 2, { "before": true, "after": true } ],
+    "constructor-super": 2,
+    "generator-star-spacing": [ 2,{"before":true,"after":true} ],
+    "no-class-assign": 2,
+    "no-confusing-arrow": [ 2, {"allowParens": false} ],
+    "no-const-assign": 2,
+    "no-dupe-class-members": 2,
+    "no-duplicate-imports": [ 2, { "includeExports": true } ],
+    "no-new-symbol": 2,
+    "no-this-before-super": 2,
+    "no-useless-computed-key": 2,
+    "no-useless-constructor": 2,
+    "no-useless-rename": 2,
+    "no-var": 1,
+    "object-shorthand": [ 2, "consistent-as-needed" ],
+    "prefer-arrow-callback": [ 2, { "allowNamedFunctions": true, "allowUnboundThis": true } ],
+    "prefer-const": [ 1, { "destructuring": "any", "ignoreReadBeforeAssign": false } ],
+    "prefer-numeric-literals": 2,
+    "prefer-rest-params": 1,
+    "prefer-spread": 1,
+    "prefer-template": 0,
+    "require-yield": 2,
+    "rest-spread-spacing": [ 2, "never" ],
+    "symbol-description": 1,
+    "template-curly-spacing": [ 2, "never" ],
+    "yield-star-spacing": [ "error", { "before": true, "after": true } ],
+
+    "array-bracket-newline": [ 2, { "multiline": true, "minItems": 3 } ],
+    "array-bracket-spacing": [ 2, "always"],
+    "array-element-newline": [ 2, { "multiline": true, "minItems": 3 } ],
+    "block-spacing" : 2,
+    "brace-style": [ 2, "1tbs", { "allowSingleLine": true } ],
+    "comma-dangle": [ 2, { "arrays": "only-multiline", "objects": "only-multiline", "imports": "never", "exports": "never", "functions": "ignore" } ],
+    "comma-spacing": [2, { "before": false, "after": true } ],
+    "computed-property-spacing": [ 2, "always" ],
+    "consistent-this": [ 1, "_self" ],
+    "eol-last": [ 2, "always" ],
+    "func-call-spacing": [ 2, "never" ],
+    "indent": [ 2, 4 ],
+    "key-spacing": [ 2, { "beforeColon": true, "afterColon": true, "mode": "strict" } ],
+    "keyword-spacing": [ 2, { "before": true, "after": true } ],
+    "linebreak-style": [ 2, "unix" ],
+    "lines-around-comment": [ 2, { "beforeBlockComment": true, "beforeLineComment": true } ],
+    "lines-between-class-members": [ 2, "always" ],
+    "max-len": [ 1, { "code": 140, "ignoreComments": true, "ignoreTrailingComments": true, "ignoreUrls": true, "ignoreStrings": false, "ignoreTemplateLiterals": true, "ignoreRegExpLiterals": true } ],
+    "new-cap": [ 2, { "newIsCap": true, "capIsNew": false } ],
+    "new-parens": 2,
+    "no-lonely-if": 2,
+    "no-mixed-spaces-and-tabs": 2,
+    "no-multiple-empty-lines": [ 1, { "max": 1, "maxEOF": 1 } ],
+    "no-trailing-spaces": 2,
+    "no-unneeded-ternary": 2,
+
+    "object-curly-newline": [ 2, { "ObjectExpression": { "multiline": true, "minProperties": 8 }, "ObjectPattern": { "multiline": true, "minProperties": 8 }, "ImportDeclaration": { "multiline": true, "minProperties": 8 }, "ExportDeclaration": { "multiline": true, "minProperties": 8 } } ],
+    "object-curly-spacing": [ 2, "always", { "arraysInObjects": true, "objectsInObjects": true } ],
+    "one-var": [ 2, { "var": "always", "let": "consecutive", "const": "never" } ],
+
+    "quotes": [ 2, "single", { "avoidEscape": true } ],
+    "require-jsdoc": [ 1, { "require": { "FunctionDeclaration": true, "MethodDefinition": true, "ClassDeclaration": true, "ArrowFunctionExpression": true, "FunctionExpression": true } } ],
+    "semi": 2,
+    "semi-spacing": 2,
+    "semi-style": [ 2, "last" ],
+    "space-before-blocks": [ 2, "always" ],
+    "space-before-function-paren": [ 2, "never" ],
+    "space-in-parens": [ 2, "always" ],
+    "space-infix-ops": [ 2, { "int32Hint": false } ],
+    "space-unary-ops": [ 2, { "words": true, "nonwords": false } ],
+    "spaced-comment": [ 2, "always" ],
+    "switch-colon-spacing": [ 2, { "after": true, "before": true } ],
+    "template-tag-spacing": [ 2, "always" ]
+  }
+}