Process/Calculate two objects values and generate output from them

Question

I have two objects - one containing formulas and other array object contains values. I want to club and do calculate output shown below.

Object-1

{
    SI : (PxTxR)/100,
    ratio: P1/P2
}

Object-2

[
    {
      P1:34053,
      P2:45506
    },
    {
      P:3403,
      T:3,
      R:7.35
      P1:34053,
      P2:45506
    }
]

Result :

{
    SI:750.36,
    ratio:0.74
}

Answer 1

You could regard to parse , compile expression ( obj1 ) and evaluate with scope (element of obj2 )

Below is a worked solution

 const obj1 = { SI: `(P*T*R)/100`, ratio: `P1/P2` } const obj2 = [ { P1: 34053, P2: 45506 }, { P: 3403, T: 3, R: 7.35, P1: 34053, P2: 45506 }, ] const nodeObj1 = Object.entries(obj1).map(([expName, exp]) => [ expName, math.parse(exp).compile(), ]) const res = obj2.map((obj) => { return Object.fromEntries( nodeObj1.map(([expName, compiledExp]) => { try { return [expName, compiledExp.evaluate(obj)] } catch (err) { return [expName, undefined] } }) ) }) console.log(res)

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