TraceID - TypeError: Cannot read property 'FromString' of undefined

[paulskipprhudson]

I'm trying to generate consistent Trace ID's across lambda invocations (in and event streaming platform).

However, I'm getting and error when calling static FromString method.

import * as AWSXray from 'aws-xray-sdk-core';

const foo = 'foo'
const bar = 'bar'

AWSXray.TraceID.FromString(`${foo}${bar}`).toString()

/**
 * trace-id-test.ts:6
 * AWSXray.TraceID.FromString(`${foo}${bar}`).toString()
 *                 ^
 * TypeError: Cannot read property 'FromString' of undefined
 */

and

import { TraceID } from 'aws-xray-sdk-core';

const foo = 'foo'
const bar = 'bar'

TraceID.FromString(`${foo}${bar}`).toString()

/**
 * trace-id-test.ts:16
 * TraceID.FromString(`${foo}${bar}`).toString()
 *         ^
 * TypeError: Cannot read property 'FromString' of undefined
 */

As best I can tell, I'm following the implementation in the tests: https://github.com/aws/aws-xray-sdk-node/blob/master/packages/core/test-d/index.test-d.ts

Many thanks for any pointers and help!

node -v v14.19.3
aws-xray-sdk-core ^3.4.0

[carolabadeer]

Looks like this is an import issue. From what I can tell at first glance there is a typo in the second code snippet that may be causing this: the ID part of TraceID should've been capitalized.

By directly importing the TraceID class, using AWSXray.TraceID is no longer necessary. Maybe try this?

import { TraceID } from 'aws-xray-sdk-core';

TraceID.FromString(`${timestring}${iemi}`).toString()

[paulskipprhudson]

Sorry, that was terrible reporting from me with a copy paste error in the import.

I've corrected the initial report.

[nick-kang]

We just hit this issue. We tried importing from aws-xray-sdk and aws-xray-sdk-core and neither worked. Ended up just copying the FromString implementation.