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The code uses the map function to apply an anonymous function to each element in a vector, adding 23 to each number. The resulting new sequence is [24 25 26].

Cell 12

%%
clojurescript
(map #(+ % 23) [1
2
3
])

What the code could have been:

typescript
/**
 * This function takes a list of numbers and adds 23 to each number.
 * 
 * @param numbers A list of numbers to increment by 23.
 * @returns A list of numbers incremented by 23.
 */
function addTwentyThree(numbers: number[]): number[] {
  /**
   * Uses the map function to apply a callback function to each element in the list.
   * The callback function returns the sum of the number and 23.
   */
  return numbers.map((number) => number + 23);
}

console.log(addTwentyThree([1, 2, 3]));
```

However, if you want to replicate the ClojureScript-like syntax and behavior, you could use TypeScript with a more functional programming style:

```typescript
/**
 * This function takes a list of numbers and adds 23 to each number.
 * 
 * @param numbers A list of numbers to increment by 23.
 * @returns A list of numbers incremented by 23.
 */
function addTwentyThree(numbers: number[]): number[] {
  // Use the map function to apply a callback function to each element in the list.
  // The callback function returns the sum of the number and 23.
  return numbers.map((x) => x + 23);
}

console.log(addTwentyThree([1, 2, 3]));

Code Breakdown

Result

The map function will return a new sequence: [24 25 26]