15 lines
311 B
JavaScript
15 lines
311 B
JavaScript
function before(n, func) {
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if (!Number.isInteger(n) || n < 0) {
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throw new Error('n must be a non-negative integer.');
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}
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let counter = 0;
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return (...args) => {
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if (++counter < n) {
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return func(...args);
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}
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return undefined;
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};
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}
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export { before };
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