Created
November 7, 2019 04:18
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function assertIsNumber(input: any): asserts input is number { | |
if (typeof(input) !== 'number') { | |
throw new Error('Oh snap!') | |
} | |
} | |
function getStandardFixedNumberString(input: string | number): string { | |
assertIsNumber(input); // Remove this line and we won't compile | |
return input.toFixed(2).toString(); | |
} |
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