Vendoring broke opentracing types / uses different libs

[BridgeAR]

Original issue report

opentracing doesn't seem to like dd-trace's Tracer.

For example:

import tracer from "dd-trace";
import * as opentracing from "opentracing";

tracer.init();

opentracing.initGlobalTracer(tracer);

Throws the following compile error for me:

TSError: ⨯ Unable to compile TypeScript:
src/handlers/tracing/open-tracing.ts(39,32): error TS2345: Argument of type 'import("/Users/me/project/node_modules/dd-trace/docs/index").Tracer' is not assignable to parameter of type 'import("/Users/me/project/node_modules/opentracing/lib/tracer").Tracer'.
  Types of property 'startSpan' are incompatible.
    Type '(name: string, options?: import("/Users/me/project/node_modules/dd-trace/node_modules/opentracing/lib/tracer").SpanOptions | undefined) => import("/Users/me/project/node_modules/dd-trace/docs/index").Span' is not assignable to type '(name: string, options?: import("/Users/me/project/node_modules/opentracing/lib/tracer").SpanOptions | undefined) => import("/Users/me/project/node_modules/opentracing/lib/span").Span'.
      Types of parameters 'options' and 'options' are incompatible.
        Type 'import("/Users/me/project/node_modules/opentracing/lib/tracer").SpanOptions | undefined' is not assignable to type 'import("/Users/me/project/node_modules/dd-trace/node_modules/opentracing/lib/tracer").SpanOptions | undefined'.
          Type 'import("/Users/me/project/node_modules/opentracing/lib/tracer").SpanOptions' is not assignable to type 'import("/Users/me/project/node_modules/dd-trace/node_modules/opentracing/lib/tracer").SpanOptions'.
            Types of property 'references' are incompatible.
              Type 'import("/Users/me/project/node_modules/opentracing/lib/reference").default[] | undefined' is not assignable to type 'import("/Users/me/project/node_modules/dd-trace/node_modules/opentracing/lib/reference").default[] | undefined'.
                Type 'import("/Users/me/project/node_modules/opentracing/lib/reference").default[]' is not assignable to type 'import("/Users/me/project/node_modules/dd-trace/node_modules/opentracing/lib/reference").default[]'.
                  Type 'import("/Users/me/project/node_modules/opentracing/lib/reference").default' is not assignable to type 'import("/Users/me/project/node_modules/dd-trace/node_modules/opentracing/lib/reference").default'.
                    Property '_type' is protected but type 'Reference' is not a class derived from 'Reference'.

dependency	version
typescript	3.3.3333
opentracing	0.14.3
dd-trace	0.9.2

Glad to see typescript getting some love from dd-trace 🙂

This is happening again to me after #6958¹, with the exact same error message :-(

Using

import { initGlobalTracer } from 'dd-trace/vendor/dist/opentracing';

instead of

import { initGlobalTracer } from 'opentracing';

solves the type error, but I'm confident that this is the wrong solution. Alternatively I can write

opentracing.initGlobalTracer(tracer as unknown as opentracing.OpenTracer);

but that's just as ugly.

_{1: concretely, it did work with dd-trace@5.80.0 and now fails after upgrading to dd-trace@5.87.0.}

Originally posted by @ab-pm in #464