lightstep-tracer/src/imp/propagator.js

> ❗ **This instrumentation is no longer recommended**. Please review [documentation on setting up and configuring the OpenTelemetry Node.js Launcher](https://github.com/lightstep/otel-launcher-node) or [OpenTelemetry JS (Browser)](https://github.com/open-

export default class UnsupportedPropagator {
    constructor(tracer, name) {
        this._tracer = tracer;
        this._name = name;
    }

    inject(spanContext, carrier) {
        this._tracer._error(`Unsupported format: ${this._name}`);
        return null;
    }

    extract(carrier) {
        this._tracer._error(`Unsupported format: ${this._name}`);
    }
}