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Packages

The jscpd monorepo contains two apps and several supporting packages.

Apps

jscpd

Path: apps/jscpd npm: jscpd Version: 4.2.5

Main package for jscpd — CLI and Node.js API for copy/paste detection. See TypeScript docs.

jscpd-server

Path: apps/jscpd-server npm: jscpd-server Version: 4.2.5

Standalone server application providing REST API and MCP server for on-demand code duplication detection. See AI-Ready docs for details.

Packages (TypeScript / Node.js)

@jscpd/core

Path: packages/core npm: @jscpd/core Version: 4.2.5

Core detection algorithm. Implements Rabin-Karp rolling hash for finding duplicate code blocks. Single dependency on eventemitter3. Provides IClone, IMapFrame, MemoryStore, and event interfaces.

@jscpd/finder

Path: packages/finder npm: @jscpd/finder Version: 4.2.5

Detector of duplications in files. Walks filesystem, runs clone detection, provides built-in reporters, subscribers, validators, and hooks.

@jscpd/tokenizer

Path: packages/tokenizer npm: @jscpd/tokenizer Version: 4.2.5

Tokenizer — converts source code into tokens for duplicate detection. Supports 224 languages/formats via reprism-based grammar engine with lazy loading. Cross-format tokenization for Vue SFC, Svelte, Astro, and Markdown.

@jscpd/html-reporter

Path: packages/html-reporter npm: @jscpd/html-reporter Version: 4.2.5

HTML reporter — generates interactive HTML report with per-format statistics, duplication graph, and syntax-highlighted clone diffs.

@jscpd/badge-reporter

Path: packages/badge-reporter npm: @jscpd/badge-reporter Version: 4.2.5

Badge reporter — generates SVG badges showing copy/paste level.

jscpd-sarif-reporter

Path: packages/sarif-reporter npm: jscpd-sarif-reporter Version: 4.2.5

SARIF reporter — generates Static Analysis Results Interchange Format output for GitHub Code Scanning. Emits warning-level results per clone, plus error if threshold exceeded.

@jscpd/leveldb-store

Path: packages/leveldb-store npm: @jscpd/leveldb-store Version: 4.2.5

LevelDB store — persistent disk-backed token store for large repositories. Slower than default in-memory store but can handle very large codebases.

@jscpd/redis-store

Path: packages/redis-store npm: @jscpd/redis-store Version: 4.2.5

Redis store — offloads in-memory hash map to Redis. Useful for large codebases or distributed/CI environments.

Crates (Rust / v5)

cpd (binary)

Path: rust/crates/cpd npm: jscpd@5 (installs both jscpd and cpd commands) | cpd (installs cpd command only) crates.io: jscpd (installs both jscpd and cpd binaries) Version: 5.0.4 (npm) / 0.1.4 (crates.io)

CLI binary, entry point. Published as jscpd@5 on npm (self-contained binary, installs both jscpd and cpd commands, no Node.js runtime) and cpd on npm (installs only cpd command). See Rust docs.

cpd-core

Path: rust/crates/cpd-core Version: 0.1.3

Core data models and Rabin-Karp rolling hash implementation.

cpd-tokenizer

Path: rust/crates/cpd-tokenizer Version: 0.1.3

Source code tokenizer (223+ formats). Uses oxc_parser for Go, TypeScript/JSX tokenization.

cpd-finder

Path: rust/crates/cpd-finder Version: 0.1.4

File walking, orchestration, and git blame. Uses rayon for parallelism, ignore + globset for file matching.

cpd-reporter

Path: rust/crates/cpd-reporter Version: 0.1.4

Output format rendering for 13 reporters.