Re-do kata

Author: osedoe

src/HighestScoringWord/highest-scoring-word.ts

@@ -1,22 +1,16 @@
-// FIXME: types is ringing
-export function high(str) {
-    // 1. We split the string into an array of words
-    const wordsArray = str.split(" ");
-    // 2. We split each word into letters
-    const lettersArray = wordsArray.map(word => word.split(""));
-    // 3. We find the points per letter and put it in an array
-    let numbersArray = [];
-    for (let word of lettersArray) {
-        numbersArray = word
-        // 3.2. We are using charCodeAt to assign the score per letter (i.e. charCodeAt(a) = 97 then 97-1 => a = 1 point
-            .map(letter => letter.charCodeAt(0) - 96)
-            // 3.3. We sum all the points
-            // The 0 at the end of reduce is giving an initial value of 0 to the reduce function since in one single mf case it gave error
-            .reduce((total, amount) => total + amount, 0);
-        numbersArray.push(numbersArray);
-    }
-    // 4. Compare the points for each word and return the highest
-    const winnerIndex = numbersArray.indexOf(Math.max(...numbersArray));
-    // 6. Return the word associated
-    return wordsArray[winnerIndex];
+export function high(str: string): string {
+    const wordsArray: string[] = str.split(' ');
+    const lettersArray: string[][] = wordsArray.map(word => word.split(""));
+
+    let scoresArray = lettersArray.map(word => word.map(letter =>
+      letter.charCodeAt(0)- 96).reduce((total, amount) => total + amount));
+
+    const scoreTable = wordsArray.reduce((object, key, index) => {
+        return {
+            ...object,
+            [key]: scoresArray[index]
+        };
+    }, {});
+    const highestScore = Math.max(...scoresArray);
+    return Object.keys(scoreTable).find(word => scoreTable[word] === highestScore) || '';
 }