ExponentialHistogram has an invalid default param

[MustafaHaddara]

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What happened?

Steps to Reproduce

We got this bug report on the Honeycomb web SDK about a build error with a particularly strict compiler (closurescript).

Reproduction repo: https://github.com/msolli/honeycomb-otel-repro

Expected Result

Closurescript apps can use opentelemetry

Actual Result

Closurescript apps using opentelemetry can't build

Additional Details

I think the problem is here: https://github.com/open-telemetry/opentelemetry-js/blob/main/packages/sdk-metrics/src/aggregator/ExponentialHistogram.ts#L68

Specifically:

export class ExponentialHistogramAccumulation implements Accumulation {
  constructor(
    public startTime: HrTime = startTime, // startTime is undefined
  }
}

OpenTelemetry Setup Code

package.json

Relevant log output

Operating System and Version

No response

Runtime and Version

No response