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Identification of the authors responsible for duplicated code blocks using Git blame history.
Distinct from Code Logic Duplication: Distinct from Code Logic Duplication: focuses on attributing duplicates to authors, not the act of duplicating code.
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jscpd is a code duplication detector that scans source code across 223 languages to find identical or near-identical copy-pasted blocks using a rolling hash algorithm. It is built with a Rust core for high performance, exposed through a Node.js API and CLI, and can be run as a standalone binary with no runtime dependencies. The tool detects duplicates in embedded languages within Vue, Svelte, Astro, and Markdown files by tokenizing each language block separately, and it supports extensionless scripts via shebang detection. The project distinguishes itself through its integration capabilities
Uses Git blame to identify which authors wrote each duplicated code block.