style: lint ignore and .md files

.github/CONTRIBUTING.md

@@ -19,6 +19,7 @@ You should have a new folder called the name of your challenge in [challenges](.
 - `input-output.json` : An array of possible input/output. This file allows you to test solutions.
 
   Example of file :
+
   ```json
   [
     {
@@ -31,7 +32,9 @@ You should have a new folder called the name of your challenge in [challenges](.
     }
   ]
   ```
+
   Each object has a "input" key, an array where each item is an argument passed to the solution function when it's executed. The "output" key is the expected output with the given input.
+
 - `solutions` folder where there are all solutions for this specific challenge.
 
 ## Solution for an already existing challenge
@@ -62,6 +65,7 @@ Steps to add a new language :
    - Create and write a new file called `./output.json`, with the output result of the solution function
 
    Example in javascript with node.js ([execute.js](../scripts/languages-wrapper/execute.js)) :
+
    ```javascript
    const path = require('path')
    const fs = require('fs').promises
@@ -90,17 +94,15 @@ Steps to add a new language :
    }
    ```
 1. Create a new solution file with the default basic boilerplate code in `/scripts/languages-wrapper/templates`. Example : `solution.js`:
-    ```js
-    function solution () {
 
-    }
+   ```js
+   function solution () {}
 
    module.exports = solution
    ```
+
 1. Add the language in the language available in [README.md](../README.md) file.
 
-
-
 ## Spelling error
 
 Correct spelling errors, in the README or CONTRIBUTING files.

.gitpod.yml

@@ -1,4 +1,4 @@
-image: gitpod/workspace-full
+image: 'gitpod/workspace-full'
 
 tasks:
-  - init: npm install
+  - init: 'npm install'

LICENSE

@@ -1,5 +1,5 @@
 The MIT License (MIT)
-Copyright © 2020
+Copyright (c)
 
 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:
 

challenges/pairwise/README.md

@@ -11,7 +11,7 @@ You may use multiple pairs that have the same numeric elements but different ind
 For example `pairwise([7, 9, 11, 13, 15], 20)` returns `6`. The pairs that sum to 20 are `[7, 13]` and `[9, 11]`. We can then write out the array with their indices and values.
 
 | Index | 0   | 1   | 2   | 3   | 4   |
-|-------|---|---|----|----|----|
+| ----- | --- | --- | --- | --- | --- |
 | Value | 7   | 9   | 11  | 13  | 15  |
 
 Below we'll take their corresponding indices and add them.

challenges/reverse-polish-notation/README.md

@@ -6,13 +6,13 @@ Created by [@Divlo](https://github.com/Divlo) on 29 September 2020.
 
 Your job is to create a calculator which evaluates expressions in Reverse Polish notation (a mathematical notation in which operators follow their operands. It does not need any parentheses as long as each operator has a fixed number of operands).
 
-For example expression 5 1 2 + 4 * + 3 - (which is equivalent to 5 + ((1 + 2) * 4) - 3 in normal notation) should evaluate to 14.
+For example expression 5 1 2 + 4 _ + 3 - (which is equivalent to 5 + ((1 + 2) _ 4) - 3 in normal notation) should evaluate to 14.
 
 For your convenience, the input is formatted such that a space is provided between every token.
 
 Empty expression should evaluate to 0.
 
-Valid operations are +, -, *, /.
+Valid operations are +, -, \*, /.
 
 You may assume that there won't be exceptional situations (like stack underflow or division by zero).
 

package-lock.json

@@ -0,0 +1,778 @@
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+      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "dev": true
+    },
+    "yargs": {
+      "version": "15.4.1",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-15.4.1.tgz",
+      "integrity": "sha512-aePbxDmcYW++PaqBsJ+HYUFwCdv4LVvdnhBy78E57PIor8/OVvhMrADFFEDh8DHDFRv/O9i3lPhsENjO7QX0+A==",
+      "dev": true,
+      "requires": {
+        "cliui": "^6.0.0",
+        "decamelize": "^1.2.0",
+        "find-up": "^4.1.0",
+        "get-caller-file": "^2.0.1",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^2.0.0",
+        "set-blocking": "^2.0.0",
+        "string-width": "^4.2.0",
+        "which-module": "^2.0.0",
+        "y18n": "^4.0.0",
+        "yargs-parser": "^18.1.2"
+      }
+    },
+    "yargs-parser": {
+      "version": "18.1.3",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.3.tgz",
+      "integrity": "sha512-o50j0JeToy/4K6OZcaQmW6lyXXKhq7csREXcDwk2omFPJEwUNOVtJKvmDr9EI1fAJZUyZcRF7kxGBWmRXudrCQ==",
+      "dev": true,
+      "requires": {
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
+      }
+    },
+    "yn": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",
+      "integrity": "sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q==",
+      "dev": true
+    }
+  }
+}

tsconfig.json

@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "ES2018",
+    "target": "ES2019",
     "module": "commonjs",
     "moduleResolution": "node",
     "strict": true,