12 lines
247 B
TypeScript
12 lines
247 B
TypeScript
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const power = (n? : number) : number | undefined => {
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if( typeof n === "undefined" || n === null){
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return undefined
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}
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if(typeof n !== "number"){
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return undefined
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}
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return Math.pow(n, 2)
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}
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export default power
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