@turnkey/react-wallet-kit/dist/utils/oauth/pkce.js

The easiest and most powerful way to integrate Turnkey's Embedded Wallets into your React applications.

'use strict';

var config = require('./config.js');

/**
 * Generates a PKCE challenge pair (verifier and code challenge)
 */
async function generateChallengePair() {
  const randomBytes = new Uint8Array(32);
  window.crypto.getRandomValues(randomBytes);
  const verifier = btoa(String.fromCharCode(...randomBytes)).replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, "");
  const encoder = new TextEncoder();
  const data = encoder.encode(verifier);
  const digest = await window.crypto.subtle.digest("SHA-256", data);
  const base64Challenge = btoa(String.fromCharCode(...new Uint8Array(digest))).replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, "");
  return {
    verifier,
    codeChallenge: base64Challenge
  };
}
/**
 * Exchanges Facebook authorization code for token
 */
async function exchangeFacebookCodeForToken(clientId, redirectUri, code, codeVerifier) {
  const params = new URLSearchParams({
    client_id: clientId,
    redirect_uri: redirectUri,
    code_verifier: codeVerifier,
    code: code,
    grant_type: "authorization_code"
  });
  const response = await fetch(config.FACEBOOK_GRAPH_URL, {
    method: "POST",
    headers: {
      "Content-Type": "application/x-www-form-urlencoded"
    },
    body: params.toString()
  });
  if (!response.ok) {
    const errorData = await response.json();
    throw new Error(`Facebook token exchange failed: ${JSON.stringify(errorData)}`);
  }
  return await response.json();
}

exports.exchangeFacebookCodeForToken = exchangeFacebookCodeForToken;
exports.generateChallengePair = generateChallengePair;
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