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Scans source files across 220+ languages and embedded formats like Vue, Svelte, and Markdown to find exact and near-miss duplicates.
Distinct from Semantic Code Clone Detection: Distinct from Semantic Code Clone Detection: focuses on multi-language support and embedded language tokenization, not semantic fingerprinting.
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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
Scans source code across 223 languages to find copy-pasted blocks.