PlayWithWords

Daily Challenges — Promises & Morse

Play With Words

Goal: Build resilient asynchronous flows with HTTP requests, loading states, validation, and error handling.

🧭 NOVA Folder Guide

Metric	Value
Readiness	80%
Files	4
Source files	2
Test files	0
Text lines	265

▶️ Main paths

• Week4AdvAsynchronousJavaScript/Day4AsynchronousJavaScript/DailyChallenge/PlayWithWords/daily_promises_morse.js
• Week4AdvAsynchronousJavaScript/Day4AsynchronousJavaScript/DailyChallenge/PlayWithWords/index_daily_challenges.html

🚀 Run

node Week4AdvAsynchronousJavaScript/Day4AsynchronousJavaScript/DailyChallenge/PlayWithWords/daily_promises_morse.js
python -m http.server 8000

🟢 What is already strong

• ✅ README documentation is generated and repeatable.
• ✅ Contains 2 source file(s) across practical exercises or projects.
• ✅ No Python syntax error was detected in this folder tree.
• ✅ A likely runnable entry point was detected.

🟠 What to improve next

• ⚠️ No local unit test is present yet; repository-wide syntax checks still cover the sources.

🧪 Validation

python tools/nova_quality_gate.py --repo . --strict
python -m unittest discover -s tests/python -p "test_*.py" -v
node tools/run_node_tests.mjs .

The readiness value is a transparent repository heuristic, not a course grade and not proof that every interactive or external-API exercise was executed.

_{Managed by NOVA Ultimate v2.0.0 · 2026-07-15T06:22:49+03:00}

Short, commented solutions in vanilla JavaScript. Includes a minimal UI and the exact chains requested.

Files

• index_daily_challenges.html — Minimal UI to try both challenges.
• daily_promises_morse.js — All exercises implemented (short & simple).
• README — This file.

1) makeAllCaps & sortWords

const makeAllCaps = (arr) => new Promise((resolve, reject) => {
  const allStrings = Array.isArray(arr) && arr.every(x => typeof x === "string");
  if (!allStrings) return reject("All items must be strings.");
  resolve(arr.map(w => w.toUpperCase()));
});

const sortWords = (arr) => new Promise((resolve, reject) => {
  if (!Array.isArray(arr)) return reject("Expected an array.");
  if (arr.length > 4) resolve([...arr].sort());
  else reject("Array must have more than 4 items.");
});

Tests included (UI buttons)

• [1] makeAllCaps([1, "pear", "banana"]) → reject
• [2] makeAllCaps(["apple","pear","banana"]) → sortWords(...) → reject
• [3] makeAllCaps(["apple","pear","banana","melon","kiwi"]) → sortWords(...) → resolve & sort

2) Morse Translator (Promises chain)

• toJs() → parses the given JSON string to a JS object (reject if empty/invalid).
• toMorse(morseJS) → requests input (from the text box, or prompt if empty), validates characters and returns an array of codes (reject on unsupported char).
• joinWords(array) → joins with line breaks and writes to the DOM.

Example (input “Hello”)

....
.
.-..
.-..
---

How to run

Browser

1. Open index_daily_challenges.html.
2. Use the three buttons for Challenge 1.
3. For Morse: type text or leave it empty to use the prompt, then click Translate.
4. Check the Console for logs if needed.

Node (optional)

You can import the functions from daily_promises_morse.js if you want to test in Node.

Notes

• Code is intentionally concise and commented in English.
• Morse mapping also supports a space (" ") → / so you can separate words visually.