React Native:Warning of missing secure random source after installing react-native-get-random-values

My React Native 63.2 app get the following warning about missing a secure random source, after installing react-native-get-random-values

  [Wed Oct 21 2020 11:43:11.514]  BUNDLE  ./index.js

  [Wed Oct 21 2020 11:43:19.165]  LOG      WARNING: This environment is missing a secure random source; generated private keys may be at risk, think VERY carefully about not adding a better secure source.
 [Wed Oct 21 2020 11:43:19.170]  LOG      Shims Injected:
 [Wed Oct 21 2020 11:43:19.172]  LOG        - atob
 [Wed Oct 21 2020 11:43:19.173]  LOG        - btoa
 [Wed Oct 21 2020 11:43:19.175]  LOG        - nextTick
 [Wed Oct 21 2020 11:43:19.177]  LOG        - crypto.getRandomValues
 [Wed Oct 21 2020 11:43:19.178]  LOG        - FileReader.prototype.readAsArrayBuffer

Here is the related package.json:

 "dependencies": {
    "@ethersproject/shims": "^5.0.6",  //<<==ethers shim
   "ethers": "^5.0.17",  //<<==ethers
   "native-base": "^2.13.14",
   "react": "16.13.1",
   "react-native": "0.63.2",
   "react-native-get-random-values": "^1.5.0",  //<<==secure random string source
 },

Here is the import header:

 import React, { Component, useEffect, useState} from 'react';
 import {View, Image, Dimensions, Text, Alert  } from 'react-native';
 import DeviceInfo from 'react-native-device-info';
 import "@ethersproject/shims"  //for ethers.js  //<<==etherjs shim. Tried import shim in App.js and warning is the same.
 // Import the ethers library
 import { ContractFactory, ethers } from "ethers";  //<<==ethers

Does the warning smell trouble? Or just a warning and can be ignored after installing react-native-get-random-values.

[emclab]

The solution found is that the module react-native-get-random-values has to be imported before the initial importing of ethers shim. (even the module may not be used in the component). Here is the working sequence:

import 'react-native-get-random-values'
import "@ethersproject/shims"  //for ethers.js
import { ContractFactory, ethers } from "ethers";

The warning disappears after importing random module before shim as above.

[emclab]

ethersjs recognize the polyfill of crypto.getRandomBytes but seems viewing it as insecure source of PRNG.

console.log("typeof global.crypto.getrandomvalues : ", typeof(global.crypto.getRandomValues)); //function
console.log("type of ethers.utils.randomBytes : ", typeof(ethers.utils.randomBytes));  //function returned