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@flareapp/core

v2.3.0

Published

Environment-agnostic core for the Flare JS SDK

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Readme

@flareapp/core

Environment-agnostic core for the Flare JavaScript SDK. Most users want @flareapp/js (browser) or @flareapp/node (Node.js servers). This package is the shared base that both consume.

Public and stable, versioned in lockstep with @flareapp/js (2.x). Intended for third-party Flare integrators who need to build against the same primitives the official SDKs use.

Surface

  • Flare — the core class. Takes three optional injection points: ScopeProvider, ContextCollector, FileReader.
  • Logger — structured logging (flare.logger). Eight syslog levels, opt-in via enableLogs; owns the log buffer, batching policy, and OTel envelope. A FlushScheduler seam is injected per platform.
  • Scope, GlobalScopeProvider, ScopeProvider — per-call mutable state.
  • FileReader, NullFileReader — source-snippet reading abstraction.
  • Api — the HTTP client used to send reports and logs.
  • Types: Config, Report, Attributes, Glow, StackFrame, etc.
  • Util: redactUrlQuery, resolveDenylist, convertToError, DEFAULT_URL_DENYLIST.

See docs/superpowers/specs/2026-05-28-nodejs-sdk-design.md in the monorepo for the architectural contract.