Getting Started Docs lead to TypeError Cannot read property 'ERROR' of undefined

[darrenparkinson]

Please answer these questions before submitting a bug report.

What version of OpenTelemetry are you using?

  "dependencies": {
    "@opentelemetry/core": "^0.21.0",
    "@opentelemetry/metrics": "^0.21.0",
    "@opentelemetry/node": "^0.21.0",
    "@opentelemetry/plugin-express": "^0.15.0",
    "@opentelemetry/plugin-http": "^0.18.2",
    "@opentelemetry/plugin-https": "^0.18.2",
    "@opentelemetry/tracing": "^0.21.0",
    "express": "^4.17.1"
  }

What version of Node are you using?

$ node --version
v14.16.1

Please provide the code you used to setup the OpenTelemetry SDK

Copy / Pasted straight from the Getting Started docs:

const { LogLevel } = require("@opentelemetry/core");
const { NodeTracerProvider } = require("@opentelemetry/node");

console.log(LogLevel)

const provider = new NodeTracerProvider({
  logLevel: LogLevel.ERROR
});

provider.register();

What did you do?

I copy/pasted the docs from the website and followed directions on the website and it resulted in the error.

Page providing the docs:
https://github.com/open-telemetry/opentelemetry-js/blob/main/website_docs/getting_started/nodejs.md

Where the docs appear:
https://opentelemetry.io/docs/js/getting_started/nodejs/

What did you expect to see?

I expected the very first example of open telemetry I tried from the Getting Started guide to work.

What did you see instead?

This hot mess:

.../tracing.js:9
  logLevel: LogLevel.ERROR
                     ^

TypeError: Cannot read property 'ERROR' of undefined
    at Object.<anonymous> (.../tracing.js:9:22)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Module.require (internal/modules/cjs/loader.js:952:19)
    at Module._preloadModules (internal/modules/cjs/loader.js:1217:12)
    at loadPreloadModules (internal/bootstrap/pre_execution.js:449:5)
    at prepareMainThreadExecution (internal/bootstrap/pre_execution.js:76:3)
    at internal/main/run_main_module.js:7:1

Additional context

These docs are my first experience of Open Telemetry. The documentation there apparently comes from here and requires updating in order for them to be usable.

Many thanks.