16 lines
353 B
TypeScript
16 lines
353 B
TypeScript
/**
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* 从最小单位（step）中推导小数位数
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*
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* "1.00000000" -> 0
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* "0.01000000" -> 2
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* "0.00010000" -> 4
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*/
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export function getDecimalPlacesFromStep(step: string): number {
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const [, decimal = ""] = step.split(".")
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if (!decimal) return 0
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const index = decimal.search(/[1-9]/)
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return index === -1 ? 0 : index + 1
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}
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