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@contrast/scopes

v1.42.1

Published

Handles AsyncLocalStorage scopes

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Links

Maintainers

tough-grifftough-griffchrisdunnechrisdunnecontrast_admincontrast_adminjcolekaplanjcolekaplancontrastseccontrastsecmhenry-contrastmhenry-contrastnbuckwaltnbuckwalt

Keywords

Readme

@contrast/scopes

AsyncLocalStorage management for the Contrast Node.js agent. It provides two stores on core.scopes:

  • core.scopes.sources holds the per-request store, so concurrent requests stay isolated.
  • core.scopes.instrumentation controls whether agent instrumentation runs. Code run with instrumentation.run({ lock: true, name }, fn) is locked, and instrumentation hooks check instrumentation.isLocked() and do nothing while it is. @contrast/deadzones uses this to skip libraries the agent shouldn't track.

core.scopes.wrap(fn) returns a callback that runs in whichever of these stores were active when it was wrapped.