@modern-kit/utils/dist/common/range/index.mjs

modern-kit/utils

import { isNil } from '../../validator/isNil/index.mjs';

function getRangeValues(start, end, step = 1) {
  const isAscending = end >= start;
  const directedStep = isAscending ? step : -step;
  const length = Math.max(Math.ceil((end - start) / directedStep), 0);
  const result = new Array(length);
  for (let i = 0; i < result.length; i++) {
    result[i] = start + directedStep * i;
  }
  return result;
}
function range(start, end, step = 1) {
  if (isNil(end)) {
    return getRangeValues(0, start);
  }
  if (!Number.isInteger(step) || step < 1) {
    throw new Error("step\uC740 1 \uC774\uC0C1\uC758 \uC815\uC218\uC5EC\uC57C \uD569\uB2C8\uB2E4.");
  }
  return getRangeValues(start, end, step);
}

export { range };
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