snag CLI — ingest, view, and push Snag Maps (Happy Path → Failure Map); key-free, offline, no LLM.

Snag Map deterministic core — failure-map/v1 schema + severity/anchor/lint/reconcile. Browser-safe (zod only).

Generates and consumes source maps

Generates and consumes source maps

Fixes stack traces for files with source maps

Store information about any JS value in a side channel, using a Map

concatenative mapdashery

Is this value a JS Map? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

`jest-haste-map` is a module used by Jest, a popular JavaScript testing framework, to create a fast lookup of files in a project. It helps Jest efficiently locate and track changes in files during testing, making it particularly useful for large projects

Fixes stack traces for files with source maps

Persistent ordered mapping from strings

Converts a source-map from/to different formats and allows adding/changing properties.

[Experimental] - 🚇 File crawling, watching and mapping for Metro

Applies source maps to stack traces, so a failing test points at the code you wrote rather than at the code Jest ran.

Generate source maps

extracts inlined source map and offers it to webpack

Packages @jridgewell/trace-mapping and @jridgewell/gen-mapping into the familiar source-map API

Map and Set with automatic key interning

Automatically cleanup expired items in a Map

Common library for code that's used across the Client, Worker, and/or Workflow