Create simple text string from array typescript

Issue

I have some array of strings like this

const doc = ['TEST', 'TEST1','TEST2']

What I need is to make function that I will create simple string from doc, that will have some different text.

1. If there is just one array member to show

   const text = ‘There is 1 doc TEST1’;

2. If there is two array member to show

   const text = ‘There is doc TEST1 and TEST2’;

3. If there is more than twoarray member to show, of course this doc array can have more than 3 array members, but this is just example

   const text = ‘There is doc TEST1, TEST2 and TEST3’;

Thanks in advance I don’t know how even to start

Solution

function toSentence(arr){
  if(arr.length===1)return `There is 1 doc ${arr[0]}`;
  const last = arr.pop();
  const others=arr.join(", ");
  return `There are docs ${others} and ${last}`
}

Answered By – Andrea

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