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20 lines
631 B
TypeScript
20 lines
631 B
TypeScript
export function isDecimalNumber(num: number): boolean {
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return !Number.isNaN(num) && Number.isFinite(num);
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}
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/**
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* Check if `num` is a valid number and is between `start` and `end` (inclusive)
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*/
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export function isNumberInRange(num: number, start: number, end: number): boolean {
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return isDecimalNumber(num) && num >= start && num <= end;
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}
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export function toNumberOrNull(input: number | string | null | undefined): number | null {
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if (input === null || input === undefined) {
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return null;
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}
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const num = typeof input === 'string' ? Number.parseFloat(input) : input;
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return isDecimalNumber(num) ? num : null;
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}
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