amazon-cognito-identity-js/enhance-rn.js

import { NativeModules } from 'react-native';
import * as src from './src';

import BigInteger from './src/BigInteger';

export * from './src';

const { RNAWSCognito } = NativeModules;

BigInteger.prototype.modPow = function nativeModPow(e, m, callback) {
	RNAWSCognito.computeModPow(
		{
			target: this.toString(16),
			value: e.toString(16),
			modifier: m.toString(16),
		},
		(err, result) => {
			if (err) {
				return callback(new Error(err), null);
			}
			const bigIntResult = new BigInteger(result, 16);
			return callback(null, bigIntResult);
		}
	);
};

src.AuthenticationHelper.prototype.calculateS = function nativeComputeS(
	xValue,
	serverBValue,
	callback
) {
	RNAWSCognito.computeS(
		{
			g: this.g.toString(16),
			x: xValue.toString(16),
			k: this.k.toString(16),
			a: this.smallAValue.toString(16),
			b: serverBValue.toString(16),
			u: this.UValue.toString(16),
		},
		(err, result) => {
			if (err) {
				return callback(new Error(err), null);
			}
			const bigIntResult = new BigInteger(result, 16);
			return callback(null, bigIntResult);
		}
	);
	return undefined;
};