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bytecode-impact

Measure and compare bytecode impact of macro/codegen changes on compiled Scala class files. Use this skill whenever investigating bytecode size, method count, class file overhead, lazy val machinery, LazyRef/lzyINIT patterns, or comparing "before vs after" bytecode output of a code change. Also triggers on "bytecode comparison", "prove bytecode improvement", "how much bytecode", "class file size", "method count", "bytecode regression", "lazy val overhead", or "does this change reduce bytecode". Use this skill alongside compile-time and runtime benchmarks for a complete picture of a change's impact.

nguyenyou
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nguyenyou
Updated 3/12/2026
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quick start

Installation and usage

Measure and compare bytecode impact of macro/codegen changes on compiled Scala class files. Use this skill whenever investigating bytecode size, method count, class file overhead, lazy val machinery, LazyRef/lzyINIT patterns, or comparing "before vs after" bytecode output of a code change. Also triggers on "bytecode comparison", "prove bytecode improvement", "how much bytecode", "class file size", "method count", "bytecode regression", "lazy val overhead", or "does this change reduce bytecode". Use this skill alongside compile-time and runtime benchmarks for a complete picture of a change's impact.

Installation
$ install --globalskills.sh
Usage

Once installed, you can use this skill by running the following command in your terminal:

skills use bytecode-impact