k6 Script Generation

Generate a complete k6 load test script in JavaScript/TypeScript for:

Base URL: [https://api.example.com]
Authentication: [Bearer token / API Key in header]
Scenarios to test:
  1. [GET /endpoint]. [description]
  2. [POST /endpoint]. body: [JSON]
  3. [PUT /endpoint]. [description]

Requirements:
- Use k6 scenarios with executor: ramping-vus
- Stages: ramp-up [N]s, hold [N]s, ramp-down [N]s
- Thresholds: http_req_duration p95 < [N]ms, http_req_failed rate < [N]%
- Custom tags per request
- CSV parameterization using SharedArray
- Check status codes and response body
- handleSummary to export JSON report

I need k6 scenarios for a mixed workload with different user behaviors:

Scenario A (Browse): [N] VUs, [description], weight [N]%
Scenario B (Checkout): [N] VUs, [description], weight [N]%
Scenario C (API): constant-arrival-rate, [N] RPS, [description]

Generate the k6 options object with:
- Per-scenario executor, VUs, duration, gracefulStop
- Shared thresholds and per-scenario thresholds using tags
- GracefulRampDown configuration
- Console output explanation

I have this k6 script:
[Paste k6 script]

Convert it to an equivalent JMeter test plan (JMX). Preserve:
- Load profile / stages → Thread Group ramp-up
- Thresholds → Response Assertions + Duration Assertions
- Checks → Response Assertions
- CSV parameterization → CSV Data Set Config
- Custom tags → Transaction Controller naming

Also highlight any k6 features that have no direct JMeter equivalent and suggest workarounds.