make-a-dictionary

function solve(arr) {
    class Term {
        constructor(word, definition) {
            this.word = word;
            this.definition = definition;
        }
    }

    const words = [];
    const definitions = [];

    for (const line of arr) {
        const currentTerm = JSON.parse(line);
        const currentWord = Object.keys(currentTerm)[0];
        const currentDefinition = Object.values(currentTerm)[0];

        const termIndex = words.indexOf(currentWord);
        if (termIndex > -1) {
            definitions[termIndex] = currentDefinition;
        } else {
            words.push(currentWord);
            definitions.push(currentDefinition);
        }
    }

    const terms = [];

    for (let i = 0; i < words.length; i++) {
        terms.push(new Term(words[i], definitions[i]));
    }

    terms.sort((a, b) => a.word.localeCompare(b.word)).forEach(term => {
        console.log(`Term: ${term.word} => Definition: ${term.definition}`);
    })
}