How can I use higher order functions like Array.reduce() in an Indesign script?

Question

I've started a project where I need to use Adobe Indesign and ExtendScript to programmatically extract some data from a series of INDD files. The version of Javascript used for scripting in these programs doesn't support any of the higher order functions that I'm used to using (`Array.reduce()`, `Array.forEach()`, `Array.map()`, etc...). Is there a way to add this functionality to ExtendScript? I feel like I'm walking around in a room with a four foot high ceiling.

Answer 1

Please watch the video

Array.prototype.MapByOmaran=function(fn){

for(let i=0;i<this.length;i++){

this[i]=fn(this[i])

}

return this

}

let arr=[1,2,3,4]

console.log(arr)

console.log(arr.MapByOmaran((a)=>a*3))