18 lines
663 B
TypeScript
18 lines
663 B
TypeScript
export const calculateItemPosition = (positionBefore: number | null, positionAfter: number | null): number => {
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if (positionBefore === null) {
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if (positionAfter === null) {
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return 0
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}
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// If there is no task after it, we just add 2^16 to the last position to have enough room in the future
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return positionAfter / 2
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}
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// If there is no task after it, we just add 2^16 to the last position to have enough room in the future
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if (positionAfter === null) {
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return positionBefore + Math.pow(2, 16)
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}
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// If we have both a task before and after it, we acually calculate the position
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return positionBefore + (positionAfter - positionBefore) / 2
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} |