Ternary operation without repetition

Let's assume that we want to display the number of comments on our website differentiating between singular or plural:

javascript
// Defining random comments
let comments = ['first comment', 'your blog is nice', 'nice colors'];

// Displaying the word depending on singular or plural
let res = comments.length === 1 ? `${comments.length} comment` : `${comments.length} comments`;

console.log(res);
// 3 comments

We are repeating ourselves a bit.

Let's improve the solution:

javascript
// Defining random comments
let comments = ['first comment', 'your blog is nice', 'nice colors'];

// Displaying the word depending on singular or plural
let res = `${comments.length} comment${comments.length === 1 ? '' : 's'}`;

console.log(res);
// 3 comments

Could we do it another way?

Let's do it using an object:

javascript
// Defining random comments
let comments = ['first comment', 'your blog is nice', 'nice colors'];

// Displaying the word depending on singular or plural
let res = `${comments.length} comment${{1: ''}[comments.length] || 's'}`;
// 3 comments