23 lines
726 B
TypeScript
23 lines
726 B
TypeScript
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const kilogramsToPounds = 2.2046226218
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export function physicalWeightKg(value: unknown): number | null {
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if (value == null || value === '') return null
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const number = Number(value)
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return Number.isFinite(number) && number > 0 ? number : null
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}
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export function physicalWeightLb(value: unknown): number | null {
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const weight = physicalWeightKg(value)
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return weight === null ? null : weight * kilogramsToPounds
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}
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export function totalPhysicalWeightLb(items: readonly ({ grossWeightKg?: number | null } | undefined)[]): number | null {
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let total = 0
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for (const item of items) {
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const weight = physicalWeightLb(item?.grossWeightKg)
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if (weight === null) return null
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total += weight
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}
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return total
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}
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