mathjs/test-tree-shaking

Use cases

To bundle all example use cases and run them (linux, unix), run:

sh bundle_and_run.sh

To explore the source code to see what modules are packed in the bundle, run:

sh explore.sh

The following use cases are worked out:

1. just pick a few full functions (supporting all data types), using a default config:

   import { add, multiply } from '../src/mainFull'
   console.log('2 * 3 + 4 = ' + add(multiply(2, 3), 4))
   

2. just pick a few functions for use with one data type, using a default config:

   import { add, multiply } from './mathjs/number'
   console.log('2 * 3 + 4 = ' + add(multiply(2, 3), 4))
   

3. just pick a few plain functions:

   import { add, multiply } from '../src/plain/number'
   console.log('2 * 3 + 4 = ' + add(multiply(2, 3), 4))
   

4. create functions yourself using factory functions:

   import { createTyped, createHypot } from '../src/factory'
   
   // Create a hypot instance that only works with numbers:
   const typed = createTyped({ type: {} })
   const hypot = createHypot({
     typed,
     abs: Math.abs,
     addScalar: (a, b) => a + b,
     divideScalar: (a, b) => a / b,
     multiplyScalar: (a, b) => a * b,
     sqrt: Math.sqrt,
     smaller: (a, b) => a < b,
     isPositive: a => a > 0
   })
   
   // Use the created function:
   console.log('hypot(3, 4) =', hypot(3, 4)) // 5
   

5. mix and match typed functions

   import { createTyped, createBigNumberClass } from '../src/factory'
   import { addNumber, multiplyNumber } from '../src/plain/number'
   import { addBigNumber, multiplyBigNumber, bignumber } from '../src/plain/bignumber'
   import { DEFAULT_CONFIG } from '../src/core/config'
   
   const BigNumber = createBigNumberClass({ config: DEFAULT_CONFIG })
   const typed = createTyped({ type: { BigNumber } })
   
   const add = typed('add', addNumber, addBigNumber)
   const multiply = typed('multiply', multiplyNumber, multiplyBigNumber)
   
   console.log('2 * 3 + 4 = ' + add(multiply(2, 3), 4))
   console.log('2 * bignumber(3) + 4 = ' + add(multiply(2, bignumber(3)), 4))