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[Sync Iteration] typescript/line-up/1 #13

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[Sync Iteration] typescript/line-up/1 #13

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16 changes: 16 additions & 0 deletions solutions/typescript/line-up/1/line-up.ts
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Original file line number Diff line number Diff line change
@@ -0,0 +1,16 @@
export function format(name: string, number: number): string {
let ending = "th";
let numberStr = String(number);
const modOne = number % 10 === 1;
const modTwo = number % 10 === 2;
const modThree = number % 10 === 3;
if (
(modOne || modTwo || modThree) &&
numberStr[numberStr.length - 2] !== "1"
) {
if (modOne) ending = "st";
else if (modTwo) ending = "nd";
else ending = "rd";
}
return `${name}, you are the ${number}${ending} customer we serve today. Thank you!`;
}