@codemod/arm-unused-local-variables-s1481
Remove trailing unused lambda variables from ARM template expressions in JSON files.
Installation
Usage
This codemod scans JSON ARM templates and rewrites string-valued ARM expressions that use lambda(...).
It removes only trailing lambda parameters that are never referenced through lambdaVariables('<name>') in the lambda body.
Examples:
becomes:
becomes:
The codemod intentionally leaves these cases unchanged:
- Lambdas where the trailing parameter is referenced
- Lambdas with only one parameter, even if it is unused
- Non-expression JSON strings that do not look like ARM expressions
- Cases where a matching
lambdaVariables(...)reference is only for a nested lambda's shadowed parameter
Because ARM expressions are embedded inside JSON strings, the codemod uses JSON AST edits for the string boundary and applies a syntax-aware string rewrite only within those expression values.
Development
License
MIT