mingo/esm/operators/expression/arithmetic/pow.js

MongoDB query language for in-memory objects

import { evalExpr } from "../../../core/_internal";
import { assert, isArray, isNil, isNumber } from "../../../util";
import { errExpectArray, errInvalidArgs } from "../_internal";
const $pow = (obj, expr, options) => {
  assert(isArray(expr) && expr.length === 2, "$pow expects array(2)");
  const args = evalExpr(obj, expr, options);
  const foe = options.failOnError;
  let t_num = true;
  for (const v of args) {
    if (isNil(v)) return null;
    t_num &&= isNumber(v);
  }
  if (!t_num) {
    return errExpectArray(foe, "$pow", {
      size: 2,
      type: "number"
    });
  }
  if (args[0] === 0 && args[1] < 0)
    errInvalidArgs(foe, "$pow cannot raise 0 to a negative exponent");
  return Math.pow(args[0], args[1]);
};
export {
  $pow
};