env variable DEBUG is not parsed correctly

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Assessment

Difficulty
1/5
Estimated time
Under an hour
Newbie friendliness
45/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Stale
Tech stack
javascript
Domain
tooling

Research direction

Start in debug/src/common.js around line 169 and inspect how the DEBUG string is split. Verify that multiple space-separated namespaces are all recognized, including the APP_X APP_Y APP_Z example; the issue does not mention a specific test file to run.

Written by the indexing model from the issue text.

Description

If the DEBUG env variable contains multiple items separated with spaces, then only the first one is used.

For example:
export DEBUG="APP_X APP_Y APP_Z"

Then, only the APP_X is enabled for debugging. Other apps are ignored. This is due to the way the string is parsed:

In debug\src\common.js, line 169:

const split = (typeof namespaces === 'string' ? namespaces : '') .trim() .replace(' ', ',') .split(',') .filter(Boolean);

replace('', ',') changes only the first occurrence of space

So, to fix it you can use regexp:

const split = (typeof namespaces === 'string' ? namespaces : '') .trim() .replace(/ /g, ',') .split(',') .filter(Boolean);

Dominant language
JavaScript
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