Function parseAccessTokenRequest

parseAccessTokenRequest(
options: ParseAccessTokenRequestOptions,
): ParseAccessTokenRequestResult
Parses and validates an OAuth 2.0 access token request.

This function performs the following steps:
1. Validates the request body against the access token request schema
2. Extracts and validates grant-specific parameters (authorization code or refresh token)
3. Parses security headers (DPoP and Client Attestation JWTs)
4. Extracts PKCE code verifier if present
Note: This function only parses and validates the structure of the request. Cryptographic verification of JWTs and tokens should be performed separately.
Parameters
- options: ParseAccessTokenRequestOptions
  Configuration object containing the access token request body and HTTP request
Returns ParseAccessTokenRequestResult
Parsed access token request with typed grant parameters and extracted security headers
Throws
If validation fails or required parameters are missing
Example
```
const result = parseAccessTokenRequest({
  accessTokenRequest: {
    grant_type: 'authorization_code',
    code: 'auth_code_123',
    client_id: 'client_123',
    code_verifier: 'verifier_xyz'
  },
  request: httpRequest
});
```
- Defined in packages/oauth2/src/access-token/parse-token-request.ts:96