function to generate random number with a lowerbound and upperbound parameter in typescript

To generate a random number in TypeScript within a specified range, we can write the following function:

index.ts
function generateRandomNumber(lowerBound: number, upperBound: number): number {
  return Math.floor(Math.random() * (upperBound - lowerBound + 1)) + lowerBound;
}
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In this function, we take in two parameters, lowerBound and upperBound, which determine the range within which we want to generate our random number. We use the Math.random() function, which returns a random number between 0 and 1, and multiply it by the difference between upperBound and lowerBound to get a number in the range of 0 to upperBound - lowerBound.

We then add lowerBound to shift the range to start at lowerBound, and wrap the whole thing in Math.floor() to get an integer.

Note that we add 1 to the difference between upperBound and lowerBound so that the upper bound is inclusive, meaning that if lowerBound and upperBound are the same, the function will always return that value.