generateCodeVerifier (lib/pkce.ts)

Generates secure PKCE code verifier and challenge for OAuth authentication flows.

// Source: https://github.com/thunderbird/thunderbolt | License: MPL-2.0 | Copyright under Patent Claims infringed by Covered Software in the absence of | Modified files must remain under MPL-2.0
// Modifications to this file must remain under MPL-2.0.
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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/**
 * Generates a cryptographically secure code verifier for PKCE (Proof Key for Code Exchange)
 * @returns A URL-safe base64-encoded random string
 */
export const generateCodeVerifier = (): string => {
  const array = new Uint8Array(32)
  crypto.getRandomValues(array)
  re

... (truncated -- full source via MCP)