feat: rewrite programming-challenges CLI (#3)

challenges/reverse-polish-notation/solutions/javascript/function/README.md

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+# reverse-polish-notation/javascript/function
+
+Created by [@Divlo](https://github.com/Divlo) on 6 June 2021.

challenges/reverse-polish-notation/solutions/javascript/function/package.json

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+{
+  "type": "module"
+}

challenges/reverse-polish-notation/solutions/javascript/function/solution.js

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+import readline from 'readline'
+
+const input = []
+const readlineInterface = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout
+})
+readlineInterface.on('line', (value) => {
+  input.push(value)
+})
+readlineInterface.on('close', solution)
+
+const operations = {
+  '+': (number1, number2) => number1 + number2,
+  '-': (number1, number2) => number1 - number2,
+  '*': (number1, number2) => number1 * number2,
+  '/': (number1, number2) => number1 / number2
+}
+
+function solution () {
+  console.log(reversePolishNotation(input[0]))
+}
+
+function reversePolishNotation(value) {
+  if (value.length === 0) {
+    return 0
+  }
+  const stack = []
+  const values = value.split(' ')
+  values.forEach((value) => {
+    const number = Number(value)
+    if (!isNaN(number)) {
+      stack.push(number)
+    } else if (operations.hasOwnProperty(value)) {
+      const number1 = stack.pop()
+      const number2 = stack.pop()
+      const operation = operations[value]
+      const result = operation(number2, number1)
+      stack.push(result)
+    }
+  })
+  return stack.pop()
+}