@anthropic-ai/sdk/internal/trace-headers.mjs

The official TypeScript library for the Anthropic API

import { propagation } from '@opentelemetry/api';
import { defaultLogger } from "./utils/log.mjs";
/**
 * The names, in lower case, of the headers that carry a trace context: those of W3C Trace Context
 * and Baggage, and any other that the propagator the application registered writes. An HTTP
 * instrumentation may add to them or replace them after a request is signed, so a signature must not
 * cover them. A propagator that fails to list its fields adds none.
 */
export function traceHeaderNames() {
    const names = new Set(['traceparent', 'tracestate', 'baggage']);
    try {
        for (const name of propagation.fields()) {
            names.add(name.toLowerCase());
        }
    }
    catch (problem) {
        // A signer calls this with no client at hand.
        defaultLogger().debug('could not record telemetry', problem);
    }
    return names;
}
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