云对象中怎么引用三方库

// 方式一  
// import {  
//   atan2, chain, derivative, e, evaluate, log, pi, pow, round, sqrt  
// } from './node_modules/mathjs';  

// 方式二  
// import math from "./node_modules/mathjs"  

// 方式三  
// const math = require('./node_modules/mathjs/lib/browser/math.js');  

// 方式四  
const math = require('mathjs');

以上方式都不可以

直接使用const ... = require('...'); 引入

@DCloud_UNI_yuhe 如图，打印值是一个对象

{"constructor":function Decimal(v) {  
      var e, i, t,  
        x = this;  

      // Decimal called without new.  
      if (!(x instanceof Decimal)) return new Decimal(v);  

      // Retain a reference to this Decimal constructor, and shadow Decimal.prototype.constructor  
      // which points to Object.  
      x.constructor = Decimal;  

      // Duplicate.  
      if (isDecimalInstance(v)) {  
        x.s = v.s;  

        if (external) {  
          if (!v.d || v.e > Decimal.maxE) {  

            // Infinity.  
            x.e = NaN;  
            x.d = null;  
          } else if (v.e < Decimal.minE) {  

            // Zero.  
            x.e = 0;  
            x.d = [0];  
          } else {  
            x.e = v.e;  
            x.d = v.d.slice();  
          }  
        } else {  
          x.e = v.e;  
          x.d = v.d ? v.d.slice() : v.d;  
        }  

        return;  
      }  

      t = typeof v;  

      if (t === 'number') {  
        if (v === 0) {  
          x.s = 1 / v < 0 ? -1 : 1;  
          x.e = 0;  
          x.d = [0];  
          return;  
        }  

        if (v < 0) {  
          v = -v;  
          x.s = -1;  
        } else {  
          x.s = 1;  
        }  

        // Fast path for small integers.  
        if (v === ~~v && v < 1e7) {  
          for (e = 0, i = v; i >= 10; i /= 10) e++;  

          if (external) {  
            if (e > Decimal.maxE) {  
              x.e = NaN;  
              x.d = null;  
            } else if (e < Decimal.minE) {  
              x.e = 0;  
              x.d = [0];  
            } else {  
              x.e = e;  
              x.d = [v];  
            }  
          } else {  
            x.e = e;  
            x.d = [v];  
          }  

          return;  

        // Infinity, NaN.  
        } else if (v * 0 !== 0) {  
          if (!v) x.s = NaN;  
          x.e = NaN;  
          x.d = null;  
          return;  
        }  

        return parseDecimal(x, v.toString());  

      } else if (t !== 'string') {  
        throw Error(invalidArgument + v);  
      }  

      // Minus sign?  
      if ((i = v.charCodeAt(0)) === 45) {  
        v = v.slice(1);  
        x.s = -1;  
      } else {  
        // Plus sign?  
        if (i === 43) v = v.slice(1);  
        x.s = 1;  
      }  

      return isDecimal.test(v) ? parseDecimal(x, v) : parseOther(x, v);  
    },"s":1,"e":1,"d":[21,6000000]}

const math = require('./node_modules/mathjs/lib/browser/math.js');

引用这个也是报错

@DCloud_UNI_yuhe