What is ESCalc Lite

ESCalc Lite is an opinionated NCalc expression evaluator in TypeScript. It exposes a parser and a tree walk evaluator for a subset of the NCalc expression language.

TIP

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What can it do?

ESCalc Lite can read and evaluate expressions like this:

if([score] > 1000, Pow([score], 0.5), [score] * 1.5) + Abs([delta])

import { ESCalcLite } from "escalc-lite";

const result = ESCalcLite.evaluate(
  'if([score] > 1000, Pow([score], 0.5), [score] * 1.5) + Abs([delta])',
  { params: { score: 196, delta: -221 } },
)
console.log(result)
// 515