chore: merge Fix/742 migrate doctest to jest (#749)

* Remove QuickSelect doctest

There are more Jest test cases already.

* Remove AverageMedian doctest

Already migrated to jest

* Migrate doctest for BinaryExponentiationRecursive.js

(also remove inline "main" test method)

* Migrate doctest for EulersTotient.js

(also remove inline "main" test method)

* Migrate doctest for PrimeFactors.js

(also remove inline "main" test method)

* Migrate doctest for BogoSort.js

Re-write prototype-polluting helper methods, too.

(also remove inline test driver code)

* Migrate doctest for BeadSort.js

(also remove inline test driver code)

* Migrate doctest for BucketSort.js

(also remove inline test driver code)

* Migrate doctest for CocktailShakerSort.js

(also remove inline test driver code)

* Migrate doctest for MergeSort.js

(also remove inline test driver code)

* Migrate doctest for QuickSort.js

(also remove inline test driver code)

* Migrate doctest for ReverseString.js

(also remove inline test driver code)

* Migrate doctest for ReverseString.js

* Migrate doctest for ValidateEmail.js

* Migrate doctest for ConwaysGameOfLife.js

(remove the animate code, too)

* Remove TernarySearch doctest

Already migrated to jest

* Migrate doctest for BubbleSort.js

(also remove inline test driver code)

* Remove doctest from CI and from dependencies

relates to #742
fixes #586

* Migrate doctest for RgbHsvConversion.js

* Add --fix option to "standard" npm script

* Migrate doctest for BreadthFirstSearch.js

(also remove inline test driver code)

* Migrate doctest for BreadthFirstShortestPath.js

(also remove inline test driver code)

* Migrate doctest for EulerMethod.js

(also remove inline test driver code)

Move manual test-code for plotting stuff in the browser in a distinct file, too. Those "*.manual-test.js" files are excluded from the UpdateDirectory.mjs script, as well.

* Migrate doctest for Mandelbrot.js

(also remove inline test driver code & moved manual drawing test into a *.manual-test.js)

* Migrate doctest for FloodFill.js

* Migrate doctest for KochSnowflake.js

(also move manual drawing test into a *.manual-test.js)

* Update npm lockfile

* Update README and COMMITTING with a few bits & bobs regarding testing & code quality

String/ReverseString.js

@@ -1,26 +1,5 @@
 /**
- * A short example showing how to reverse a string
- * @flow
- */
-
-/**
- * Create a new string and append
- * @complexity O(n)
- *
- *  Doctests
- *
- * > ReverseStringIterative('some')
- *  'emos'
- * > ReverseStringIterative('string')
- *  'gnirts'
- * > ReverseStringIterative('The Algorithms Javascript')
- *  'tpircsavaJ smhtiroglA ehT'
- * > ReverseStringIterative([])
- *  ! TypeError
- * > ReverseStringIterative({})
- *  ! TypeError
- * > ReverseStringIterative(null)
- *  ! TypeError
+ * A short example showing how to reverse a string.
  */
 function ReverseStringIterative (string) {
   if (typeof string !== 'string') {
@@ -40,34 +19,17 @@ function ReverseStringIterative (string) {
  * JS disallows string mutation so we're actually a bit slower.
  *
  * @complexity O(n)
- *
- * 'some' -> 'eoms' -> 'emos'
- *
- *  Doctests
- *
- * > ReverseStringIterativeInplace('some')
- *  'emos'
- * > ReverseStringIterativeInplace('string')
- *  'gnirts'
- * > ReverseStringIterativeInplace('The Algorithms Javascript')
- *  'tpircsavaJ smhtiroglA ehT'
- * > ReverseStringIterativeInplace([])
- *  ! TypeError
- * > ReverseStringIterativeInplace({})
- *  ! TypeError
- * > ReverseStringIterativeInplace(null)
- *  ! TypeError
  */
 function ReverseStringIterativeInplace (string) {
   if (typeof string !== 'string') {
     throw new TypeError('The given value is not a string')
   }
+
   const _string = string.split('')
 
   for (let i = 0; i < Math.floor(_string.length / 2); i++) {
     const first = _string[i]
-    const second = _string[_string.length - 1 - i]
-    _string[i] = second
+    _string[i] = _string[_string.length - 1 - i]
     _string[_string.length - 1 - i] = first
   }