Final code review

.eslintignore

@@ -0,0 +1 @@
+node_modules/

.eslintrc.json

@@ -0,0 +1,162 @@
+{
+  "env": {
+    "browser": true,
+    "es6": true,
+    "node": true
+  },
+  "extends": "eslint:recommended",
+  "parserOptions": {
+    "ecmaVersion": 2020
+  },
+  "rules": {
+    "indent": ["error", 2],
+    "linebreak-style": ["error", "unix"],
+    "quotes": [
+      "error",
+      "single",
+      {
+        "allowTemplateLiterals": true
+      }
+    ],
+    "semi": ["error", "always"],
+    "no-loop-func": ["error"],
+    "block-spacing": ["error", "always"],
+    "camelcase": ["error"],
+    "eqeqeq": ["error", "always"],
+    "strict": ["error", "global"],
+    "brace-style": [
+      "error",
+      "1tbs",
+      {
+        "allowSingleLine": true
+      }
+    ],
+    "comma-style": ["error", "last"],
+    "comma-spacing": [
+      "error",
+      {
+        "before": false,
+        "after": true
+      }
+    ],
+    "eol-last": ["error"],
+    "func-call-spacing": ["error", "never"],
+    "key-spacing": [
+      "error",
+      {
+        "beforeColon": false,
+        "afterColon": true,
+        "mode": "minimum"
+      }
+    ],
+    "keyword-spacing": [
+      "error",
+      {
+        "before": true,
+        "after": true,
+        "overrides": {
+          "function": {
+            "after": false
+          }
+        }
+      }
+    ],
+    "max-len": [
+      "error",
+      {
+        "code": 80,
+        "ignoreUrls": true
+      }
+    ],
+    "max-nested-callbacks": [
+      "error",
+      {
+        "max": 7
+      }
+    ],
+    "new-cap": [
+      "error",
+      {
+        "newIsCap": true,
+        "capIsNew": false,
+        "properties": true
+      }
+    ],
+    "new-parens": ["error"],
+    "no-lonely-if": ["error"],
+    "no-trailing-spaces": ["error"],
+    "no-unneeded-ternary": ["error"],
+    "no-whitespace-before-property": ["error"],
+    "object-curly-spacing": ["error", "always"],
+    "operator-assignment": ["error", "always"],
+    "operator-linebreak": ["error", "after"],
+    "semi-spacing": [
+      "error",
+      {
+        "before": false,
+        "after": true
+      }
+    ],
+    "space-before-blocks": ["error", "always"],
+    "space-before-function-paren": [
+      "error",
+      {
+        "anonymous": "never",
+        "named": "never",
+        "asyncArrow": "always"
+      }
+    ],
+    "space-in-parens": ["error", "never"],
+    "space-infix-ops": ["error"],
+    "space-unary-ops": [
+      "error",
+      {
+        "words": true,
+        "nonwords": false,
+        "overrides": {
+          "typeof": false
+        }
+      }
+    ],
+    "no-unreachable": ["error"],
+    "no-global-assign": ["error"],
+    "no-self-compare": ["error"],
+    "no-unmodified-loop-condition": ["error"],
+    "no-constant-condition": [
+      "error",
+      {
+        "checkLoops": false
+      }
+    ],
+    "no-console": ["off"],
+    "no-useless-concat": ["error"],
+    "no-useless-escape": ["error"],
+    "no-shadow-restricted-names": ["error"],
+    "no-use-before-define": [
+      "error",
+      {
+        "functions": false
+      }
+    ],
+    "arrow-parens": ["error", "as-needed"],
+    "arrow-body-style": ["error", "as-needed"],
+    "arrow-spacing": ["error"],
+    "no-confusing-arrow": [
+      "error",
+      {
+        "allowParens": true
+      }
+    ],
+    "no-useless-computed-key": ["error"],
+    "no-useless-rename": ["error"],
+    "no-var": ["error"],
+    "object-shorthand": ["error", "always"],
+    "prefer-arrow-callback": ["error"],
+    "prefer-const": ["error"],
+    "prefer-numeric-literals": ["error"],
+    "prefer-rest-params": ["error"],
+    "prefer-spread": ["error"],
+    "rest-spread-spacing": ["error", "never"],
+    "template-curly-spacing": ["error", "never"]
+  }
+}

.gitignore

@@ -0,0 +1,5 @@
+# Project exclude paths
+/.idea/
+/node_modules/
+tsconfig.json
+*.txt

.prettierrc

@@ -0,0 +1,10 @@
+{
+  "singleQuote": true,
+  "trailingComma": "es5",
+  "overrides": [
+    {
+      "files": ".prettierrc",
+      "options": { "parser": "json" }
+    }
+  ]
+}

CODE_OF_CONDUCT.md

@@ -0,0 +1,128 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+We as members, contributors, and leaders pledge to make participation in our
+community a harassment-free experience for everyone, regardless of age, body
+size, visible or invisible disability, ethnicity, sex characteristics, gender
+identity and expression, level of experience, education, socio-economic status,
+nationality, personal appearance, race, religion, or sexual identity
+and orientation.
+
+We pledge to act and interact in ways that contribute to an open, welcoming,
+diverse, inclusive, and healthy community.
+
+## Our Standards
+
+Examples of behavior that contributes to a positive environment for our
+community include:
+
+* Demonstrating empathy and kindness toward other people
+* Being respectful of differing opinions, viewpoints, and experiences
+* Giving and gracefully accepting constructive feedback
+* Accepting responsibility and apologizing to those affected by our mistakes,
+  and learning from the experience
+* Focusing on what is best not just for us as individuals, but for the
+  overall community
+
+Examples of unacceptable behavior include:
+
+* The use of sexualized language or imagery, and sexual attention or
+  advances of any kind
+* Trolling, insulting or derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or email
+  address, without their explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Enforcement Responsibilities
+
+Community leaders are responsible for clarifying and enforcing our standards of
+acceptable behavior and will take appropriate and fair corrective action in
+response to any behavior that they deem inappropriate, threatening, offensive,
+or harmful.
+
+Community leaders have the right and responsibility to remove, edit, or reject
+comments, commits, code, wiki edits, issues, and other contributions that are
+not aligned to this Code of Conduct, and will communicate reasons for moderation
+decisions when appropriate.
+
+## Scope
+
+This Code of Conduct applies within all community spaces, and also applies when
+an individual is officially representing the community in public spaces.
+Examples of representing our community include using an official e-mail address,
+posting via an official social media account, or acting as an appointed
+representative at an online or offline event.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported to the community leaders responsible for enforcement at
+https://t.me/MrPaschenko.
+All complaints will be reviewed and investigated promptly and fairly.
+
+All community leaders are obligated to respect the privacy and security of the
+reporter of any incident.
+
+## Enforcement Guidelines
+
+Community leaders will follow these Community Impact Guidelines in determining
+the consequences for any action they deem in violation of this Code of Conduct:
+
+### 1. Correction
+
+**Community Impact**: Use of inappropriate language or other behavior deemed
+unprofessional or unwelcome in the community.
+
+**Consequence**: A private, written warning from community leaders, providing
+clarity around the nature of the violation and an explanation of why the
+behavior was inappropriate. A public apology may be requested.
+
+### 2. Warning
+
+**Community Impact**: A violation through a single incident or series
+of actions.
+
+**Consequence**: A warning with consequences for continued behavior. No
+interaction with the people involved, including unsolicited interaction with
+those enforcing the Code of Conduct, for a specified period of time. This
+includes avoiding interactions in community spaces as well as external channels
+like social media. Violating these terms may lead to a temporary or
+permanent ban.
+
+### 3. Temporary Ban
+
+**Community Impact**: A serious violation of community standards, including
+sustained inappropriate behavior.
+
+**Consequence**: A temporary ban from any sort of interaction or public
+communication with the community for a specified period of time. No public or
+private interaction with the people involved, including unsolicited interaction
+with those enforcing the Code of Conduct, is allowed during this period.
+Violating these terms may lead to a permanent ban.
+
+### 4. Permanent Ban
+
+**Community Impact**: Demonstrating a pattern of violation of community
+standards, including sustained inappropriate behavior,  harassment of an
+individual, or aggression toward or disparagement of classes of individuals.
+
+**Consequence**: A permanent ban from any sort of public interaction within
+the community.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage],
+version 2.0, available at
+https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+
+Community Impact Guidelines were inspired by [Mozilla's code of conduct
+enforcement ladder](https://github.com/mozilla/diversity).
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see the FAQ at
+https://www.contributor-covenant.org/faq. Translations are available at
+https://www.contributor-covenant.org/translations.

CONTRIBUTING.md

@@ -0,0 +1,3 @@
+If you have any ideas of how to improve the program, feel free to add new Issues on [Issues page](https://github.com/MrPaschenko/op-coursework/issues).
+
+You can also create Pull Requests on [Pull Requests page](https://github.com/MrPaschenko/op-coursework/pulls), if you are famliar with JavaScript and Node.js.

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (C) 2021 Dmytro Pashchenko, Ivan Labiak, Andrii Vostrikov, Vladyslav Yaroshchuk
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.