[JEXL-307] Variable redeclaration option

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.1
• Fix Version/s: 3.2
• Assignee: Henri Biestro
• Reporter: Dmitri Blinov
• Created: 17/Jul/19 11:52
• Updated: 07/Jun/21 13:14
• Resolved: 17/Nov/20 15:33

Description

As of now, JEXL allows a script writer to redeclare a local variable during script evaluation.

var a = 1; var a = 2;

This may lead to potential errors with misspelled names and clashed variables. Checking for already defined variable is a common feature of many languages. This feature can be implemented in JEXL as an additional option of JexlFeatures class, enabled by default, thus allowing compatibility with existing code.