fix: keep params with an empty value

[priyanthants]

Description

paramParser (used by asyncapi generate ... --param name=value) parsed each input with:

const [paramName, paramValue] = input.split(/=(.+)/, 2);

The (.+) in that regex requires at least one character after =, so an input with an empty value — name= — does not match the split pattern. The result is that the whole param is dropped:

paramParser(['name='])          // → {}            (expected { name: '' })
paramParser(['name=value'])     // → { name: 'value' }   ✅
paramParser(['url=a=b'])        // → { url: 'a=b' }       ✅

So passing --param foo= (intentionally setting an empty value, e.g. to blank out a template parameter) is silently ignored, with no error.

Fix

Split on the first = using indexOf / slice. This keeps values that contain = and preserves params whose value is empty:

const separatorIndex = input.indexOf('=');
const paramName = input.slice(0, separatorIndex);
const paramValue = input.slice(separatorIndex + 1);

Tests

The existing test titled "should handle input with trailing equals (no capture after =)" actually passed name=value (a non-empty value), so it never exercised the case its title described — it gave false confidence while the bug remained. It now passes name= and asserts { name: '' }.

Verified locally: the updated parseParams suite passes (20/20), and the new assertion fails against the old implementation ({ 'name=': undefined }), confirming it covers the bug. eslint clean on both changed files.

---

Found by reading the code; no pre-existing issue. Happy to open one to track it if you prefer.

AI disclosure: produced with assistance from Claude (Anthropic), credited via a Co-authored-by: trailer on the commit. I reviewed, ran, and verified the change myself.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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