async function jwtParser()

in src/common/LoginConfig.ts [118:138]

• 21 lines of code
• 3 McCabe index (conditional complexity)

async function jwtParser(federatedToken: string) {
    let tokenPayload = federatedToken.split('.')[1];
    let bufferObj = Buffer.from(tokenPayload, "base64");
    let decodedPayload = JSON.parse(bufferObj.toString("utf8"));
    const JWT_CLAIM_ISSUER = 'iss';
    const JWT_CLAIM_SUBJECT = 'sub';
    const JWT_CLAIM_AUDIENCE = 'aud';
    const JWT_CLAIM_JOB_WORKFLOW_REF = 'job_workflow_ref';
    const requiredClaims = [
        JWT_CLAIM_ISSUER,
        JWT_CLAIM_SUBJECT,
        JWT_CLAIM_AUDIENCE,
        JWT_CLAIM_JOB_WORKFLOW_REF
    ];
    for (const claim of requiredClaims) {
        if (!decodedPayload[claim]) {
            throw new Error(`The claim '${claim}' is missing from the token payload`);
        }
    }
    return [decodedPayload[JWT_CLAIM_ISSUER], decodedPayload[JWT_CLAIM_SUBJECT], decodedPayload[JWT_CLAIM_AUDIENCE], decodedPayload[JWT_CLAIM_JOB_WORKFLOW_REF]];   
}