| import type { TraceContextExtractor } from '@supabase/tracing' | |
| export type { TraceContextExtractor } | |
| // The extractor lives in a `Symbol.for()`-keyed slot on `globalThis` rather | |
| // than a module-level variable. Bundlers and the ESM/CJS dual build can load | |
| // this module more than once in a single application (e.g. the tracing | |
| // subpath resolved to `dist/tracing.mjs` while the main entry resolves to | |
| // `dist/index.cjs`) — separate module instances would each get their own | |
| // variable, but they all share the global symbol registry. | |
| // | |
| // The symbol string is a de-facto stable contract: module-resolution tests | |
| // read the slot directly, and changing it orphans registrations from other | |
| // copies of this package in the same process. | |
| const EXTRACTOR_KEY = Symbol.for('@supabase/supabase-js.traceContextExtractor') | |
| type ExtractorSlot = { [EXTRACTOR_KEY]?: TraceContextExtractor } | |
| /** | |
| * Register the trace context extractor used by all Supabase clients in this | |
| * process. Called by the `@supabase/supabase-js/tracing` subpath as an import | |
| * side effect; the last registration wins. | |
| */ | |
| export function registerTraceContextExtractor(extractor: TraceContextExtractor): void { | |
| ;(globalThis as ExtractorSlot)[EXTRACTOR_KEY] = extractor | |
| } | |
| /** | |
| * The currently registered trace context extractor, if any. | |
| */ | |
| export function getTraceContextExtractor(): TraceContextExtractor | undefined { | |
| return (globalThis as ExtractorSlot)[EXTRACTOR_KEY] | |
| } | |
| /** | |
| * For tests only. Removes the registered extractor. | |
| * | |
| * @internal | |
| */ | |
| export function _unregisterTraceContextExtractor(): void { | |
| delete (globalThis as ExtractorSlot)[EXTRACTOR_KEY] | |
| } | |