fix: zero ttl is ignored

[vonovak]

Description

This fixes an issue when a 0 ttl is provided. 0 ttl should mean that the item effectively won't be stored because it's so short-lived. However, the current code fails to pass the 0 ttl to redis, meaning the value is stored forever.

This fixes it. I changed the value in some tests from 1 to 0, as it prevents this bug from reappearing, and I believe the number 0 covers the code just as well as number 1.

---

btw. it would be nice to have prettier / editorconfig or something like that in place, my ide reformatted the code in a bad way on my first attempt to make changes

Checklist

• Does npm test pass with this change (including linting)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

[leibale]

@vonovak Thanks for contributing! I'll wait for the tests to pass (although we both know they will...) and then merge it. I'll release the next version tomorrow or at the start of next week.

In the meantime you can use client.sendCommand() to workaround that.

[codecov-commenter]

Codecov Report

Base: 95.85% // Head: 95.85% // No change to project coverage 👍

Coverage data is based on head (ee1bab0) compared to base (ce1b8f7).
Patch has no changes to coverable lines.

❗ Current head ee1bab0 differs from pull request most recent head 09a41f6. Consider uploading reports for the commit 09a41f6 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2349   +/-   ##
=======================================
  Coverage   95.85%   95.85%           
=======================================
  Files         449      449           
  Lines        4224     4224           
  Branches      471      471           
=======================================
  Hits         4049     4049           
  Misses        107      107           
  Partials       68       68           

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