Cross-Platform Incompatibility:

    The syntax used in jcasbin's eval expressions (e.g., seq.list(), string.startsWith() ,string.endsWith(), include(seq.list(),xx), etc.) cannot be directly used in Casbin implementations on other language platforms (Go, Node.js, Python, etc.)

    Different Casbin implementations on various platforms require their own corresponding syntax, breaking the "write once, run anywhere" design philosophy

Non-Standard Expression Syntax:

    The current expression syntax is not part of Casbin's standard specification

    Users need to learn aviatorscript-specific syntax rather than a unified Casbin expression syntax

    Example: seq.list("A", "B") needs to be changed to ["A", "B"] on other platforms

Exposure of Features Beyond Casbin Specification:

    Due to the aviatorscript foundation, the eval function can execute operations not officially supported by Casbin but available in aviatorscript

    This may lead to security issues and unpredictable behavior

    Reduces policy portability between different Casbin implementations