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#Typescript toThrow test
empty hill
tender adder
`export function toRna(givenDna: string) {
let isValid = true;
let result = ""
let dnaArray = givenDna.toLowerCase().split('');
dnaArray.forEach((d) => {
if (!(d in dna)) {
throw new Error('Invalid input DNA.')
}
})
dnaArray.forEach((v) => {
if(v in dna) {
result += (dna[v as keyof Dna]).toUpperCase()
}
})
return result
}`