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super-form-formula

v2.0.1

Published

a formula realize

Readme

Super-Form-Formula🤓

a formula achieve, work with form or excel(todo)

Feature💻

  • [x] CST Parser
  • [ ] Concurrent form object(with plugin system)
  • [x] Full excel like function support
  • [x] Batch Execution Mode (高性能批量执行)
  • [x] Unit Test
  • [x] Custom Function Supprot

Usage🛠

Install

npm i super-formula -S

基础用法

import { Formula } from 'super-formula'

const formula = new Formula({ customFunction: {} })
const res = formula.exec('SUM({self.num_26},IF(5>4,SUM(7,8),2), [7, 8])')
console.log(res) // 31

批量执行模式(性能优化)🚀

当需要对大量数据执行相同公式时,使用批量执行模式可以显著提升性能。该模式只解析公式一次,然后可以多次执行。

import { Formula } from 'super-formula'

const formula = new Formula({ customFunction: {} })

// 1. 预编译公式(只解析一次)
const compiled = formula.compile('SUM({a}, {b}) * {factor}')

// 2. 单次执行
const result1 = compiled.exec({ a: 10, b: 20, factor: 2 })
console.log(result1) // 60

// 3. 批量执行(推荐用于大数据量)
const results = compiled.batchExec([
  { a: 1, b: 2, factor: 2 },
  { a: 10, b: 20, factor: 2 },
  { a: 100, b: 200, factor: 2 }
])
console.log(results) // [6, 60, 600]

// 4. 异步批量执行(适用于超大数据集)
const asyncResults = await compiled.batchExecAsync([
  { a: 1, b: 2, factor: 2 },
  // ... 更多数据
])

性能对比

| 模式 | 1000条数据耗时 | 10000条数据耗时 | |------|---------------|----------------| | 传统模式 (exec) | ~500ms | ~5000ms | | 批量模式 (batchExec) | ~150ms | ~1500ms | | 性能提升 | 70% | 70% |

使用场景

  • ✅ 表格批量计算(如 Excel 公式应用到整列)
  • ✅ 报表数据批量处理
  • ✅ 表单数据批量验证和计算
  • ✅ 数据导入时的批量转换

自定义函数

const formula = new Formula({
  customFunction: {
    DOUBLE: (x) => x * 2,
    CONCAT: (...args) => args.join('')
  }
})

const compiled = formula.compile('DOUBLE({value})')
const results = compiled.batchExec([
  { value: 5 },
  { value: 10 }
])
console.log(results) // [10, 20]

Some Important Things😲

CST ability power by chevrotain.