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upgrading.md

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layout: default title: Upgrading from 2.3 to 2.4 description: Guide to upgrading to newer versions of this library

redirect_from: /upgrading/

Upgrading from 2.3 to 2.4

Exception Changes

Prior to 2.4.0, this library did a poor job of using appropriate exception types and documenting which exceptions could be thrown. For example, all of the main interfaces said that only RuntimeException could be thrown, but in reality other exceptions like LogicException or InvalidArgumentException could be thrown in some cases!

This inconsistent behavior and inaccurate documentation has been fixed in 2.4.0 by:

  • Adding a new CommonMarkException interface implemented by all exceptions thrown by this library
  • Adding several new exception types that implement that interface while also extending from the same base exception type as that would have been previously thrown.
  • Fixing incorrect docblocks about the exception types being thrown

If you were previously catching exceptions thrown by this library in your code, you should consider changing your catch blocks to either catch CommonMarkException (for all exceptions) or one of the exception types under the League\CommonMark\Exception namespace.