Support application specific error handler/logger

[bwl21]

Request

when I integrate jsPDF in another application, it should be possible to connect it with the application's error message / logging approach.

Proposed solution

1. Logging is handled by a logger object

2. logger object is a read/write property of the jspdf instance

3. there is a default logger object which writes to the console

4. the logger object has the methods message, error, warning, info, debug. Maybe we implement the api defined as http://log4javascript.org/

   • warning is used for situation where jspdf can work around (e.g. by proper defaults) deprecation messages would be warnings
   • error is used for serious issues such as wrong parameters etc.
   • info may be used for informational message (e.d. to expose the jspdf version) - probably not applicable for jspdf
   • debug is used to write internal information for debugging purposes
   • message is used to give messages to the user - probably not applicable for jspdf

[Uzlopak]

Those are all the same method calls like console provides them. If the dev wants log4j, he could superseed console with log4j.

Is this a generic todo, which can be read as: "Write more console calls." ?

[github-actions]

This issue is stale because it has been open 90 days with no activity. It will be closed soon. Please comment/reopen if this issue is still relevant.

[HackbrettXXX]

We should probably get rid of some of the console.logs anyways. If someone provides a pull request I will merge it.

[github-actions]

This issue is stale because it has been open 90 days with no activity. It will be closed soon. Please comment/reopen if this issue is still relevant.