Expression rationalization gets stuck or takes too long (it worked in V9.5.1)

描述

import * as mathjs from 'mathjs';

const aa = mathjs.parse("6285.67^5/(s+6285.67)^5");
const bb = mathjs.rationalize(aa, {}, false); // It gets stuck here

console.log(bb.toString());

贡献者指南

技术栈

javascript

领域

performance

议题类型

bug

难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。

3

预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。

1-3 hours

活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。

active

清晰度议题是否清楚说明期望改动、验收标准和下一步。

clear

前置要求

mathjs library usageexpression parsing

新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。

40

研究方向

Investigate rationalize function in mathjs/src/expression/function/rationalize.js. Compare behavior between versions 9.5.1 and current. Look for changes in simplify or rationalize logic that could cause infinite loop or excessive computation. Examine the parse result for the given expression to see if any recent changes to expression tree processing lead to a hang.