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Awlm2026472

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用 fraction.js 做份额/股权比例精算。当用户要分数运算、股权比例、fraction.js 时使用。轻量接入:new Fraction + add/div;输出约分后的比与百分比;不做完整股权系统。

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  • Added September 25, 2026
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SKILL.md
---
name: awlm2026472
slug: awlm2026472
displayName: 股权份额精算
version: 1.0.0
summary: 用 fraction.js 精确计算份额/股权比例与分摊。
license: MIT
description: 用 fraction.js 做份额/股权比例精算。当用户要分数运算、股权比例、fraction.js 时使用。轻量接入:new Fraction + add/div;输出约分后的比与百分比;不做完整股权系统。
---

# 股权份额精算

灵感:能力工具箱 `fraction-js`(fraction.js 做份额/股权比例精算)。

> 小四原创:份数 → `Fraction` → 约分占比。  
> 避免 `0.1+0.2` 式浮点比例误差。

## 何时使用

- 合伙人份额占比
- 按份数分摊金额
- Demo 股权比例展示

## 硬约束

1. 依赖:`fraction.js`。
2. 入参用整数份数或可解析分数串。
3. 实现要点注释标 **小四原创**。
4. 不做完整股权登记/协议生成。

## 推荐实现

```ts
import Fraction from 'fraction.js'

// 小四原创:股权份额精算
export function shareRatio(parts: number[]): { labels: string[]; pct: string[] } {
  const total = parts.reduce((a, b) => a + b, 0)
  if (!total) return { labels: [], pct: [] }
  const labels = parts.map((p) => new Fraction(p, total).toFraction(true))
  const pct = parts.map((p) =>
    new Fraction(p, total).mul(100).valueOf().toFixed(2) + '%'
  )
  return { labels, pct }
}

export function splitByShares(amount: string, parts: number[]): string[] {
  const total = parts.reduce((a, b) => a + b, 0)
  if (!total) return parts.map(() => '0')
  return parts.map((p) =>
    new Fraction(amount).mul(p).div(total).valueOf().toFixed(2)
  )
}
```

## Agent 步骤

1. `npm i fraction.js`。
2. 输入各方份数;展示 `toFraction` 与百分比。
3. 自测:`[1,1,2]` 得 `1/4,1/4,1/2`。

## 不要做

- 用浮点直接除算出比例当最终结果。
- 做成完整股权台账。

## 附加

- [README.md](README.md) · [reference.md](reference.md) · [templates/usage.md](templates/usage.md)

Files in this skill

  • README.md711 B
  • SKILL.md2 KB
  • reference.md132 B
  • templates/usage.md79 B

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