Updating a dict in javascript with standard mathematical functions

Question

This is a python code to create a dictionary and update it with standard mathematical functions. How can I do the same in javascript?

import math

Env = dict          # An environment is a mapping of {variable: value}

env = Env()

env.update(vars(math)) # sin, cos, sqrt, pi, ..

Answer 1

You can read properties of Math with getOwnPropertyNames object and then reduce it:

const dict = {};
Object.getOwnPropertyNames(Math).reduce((r, k) => {
  r[k] = Math[k];
  return r;
}, dict);

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