@opentelemetry/plugin-grpc-js is missing index.ts

[reggiemcdonald]

What version of OpenTelemetry are you using?

0.9.0

What version of Node are you using?

v14.4.0

What did you do?

Modified the example here to use grpc-js and added a tracer similar to the grpc example tracer.

What did you expect to see?

Grpc requests should be traced.

What did you see instead?

The plugin does not load successfully because there is a missing index.ts:

PluginLoader#load: trying to load @grpc/grpc-js@1.1.3
PluginLoader#load: could not load plugin @opentelemetry/plugin-grpc-js of module @grpc/grpc-js. Error: Cannot find module '~/grpc/examples/node/node_modules/@opentelemetry/plugin-grpc-js/build/src/index.js'. Please verify that the package.json has a valid "main" entry

Additional context

The package.json has the following main entry:

opentelemetry-js/packages/opentelemetry-plugin-grpc-js/package.json

Lines 1 to 6 in ab62a4d

	{
	"name": "@opentelemetry/plugin-grpc-js",
	"version": "0.10.0",
	"description": "OpenTelemetry @grpc/grpc-js automatic instrumentation package.",
	"main": "build/src/index.js",
	"types": "build/src/index.d.ts",

but there isn't a corresponding index.ts file at that location. An index file likely needs to be created

[reggiemcdonald]

Resolved by #1358