kucherenko / jscpd

What it does

• Language-aware tokenization. per-format comment and string syntax for all 224 formats, the oxc parser for JavaScript/TypeScript/JSX/TSX, embedded-language extraction for Vue, Svelte, Astro, Markdown and Razor, and keyword/identifier/litera
• 224 language formats, with cross-format detection (Vue SFC, Svelte, Astro, Markdown) and --cross-formats groups to match clones across JavaScript and TypeScript
• Type-2 clones. --ignore-identifiers, --ignore-literals and --ignore-annotations find blocks that differ only in names, literal values or annotations, reported as renamed. A name must stand for one name on the other side, so x = x + x does
• Type-3 near-miss clones. --max-gap-lines N merges a copy with a few inserted or changed lines into one similar clone with a similarity score; --similarity compares whole functions of JavaScript, TypeScript, Python, Java, Kotlin, Scala, C#,
• Type-4 semantic clones (experimental). --semantic embeds the functions of JavaScript, TypeScript, Vue, Svelte, Astro, Python, Rust, Go, Java, Kotlin, C#, C, C++, PHP, Ruby, Scala and Swift files with a code embedding model, either one jscp