35 lines
703 B
JavaScript
35 lines
703 B
JavaScript
/**
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* Miscellaneous helper functions.
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*/
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/**
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* Strict int checking function.
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*
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* @param value The value to check for int.
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* @return Either NaN if the string was not a valid int representation, or the
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* int.
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*/
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export function filterInt(value) {
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if (/^(\-|\+)?([0-9]+|Infinity)$/.test(value)) {
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return Number(value);
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}
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return NaN;
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}
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/**
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* Helper to format song length.
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*
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* @param time Length of the song in seconds.
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* @return Formatted length as MM:SS.
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*/
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export function formatLength(time) {
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const min = Math.floor(time / 60);
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let sec = (time - 60 * min);
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if (sec < 10) {
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sec = "0" + sec;
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}
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return min + ":" + sec;
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}
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