Cannot build TypeScript OOTB Echo BOT

[Sebastian-Rogers-BEIS]

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Versions

What package version of the SDK are you using. - 4.15.0
What nodejs version are you using - 14.15.4
What browser version are you using - none
What os are you using - Windows Server 2019 Datacenter

Describe the bug

When using Yeoman to create a TypeScript Echo BOT the following errors are displayed:

81 export declare type Resolved<T> = T extends {
                       ~~~~~~~~

node_modules/@azure/core-rest-pipeline/node_modules/@azure/core-tracing/types/core-tracing.d.ts:83:41 - error TS2315: Type 'Resolved' is not generic.

83 } ? F extends (value: infer V) => any ? Resolved<V> : never : T;
                                           ~~~~~~~~~~~

node_modules/@azure/core-rest-pipeline/node_modules/@azure/core-tracing/types/core-tracing.d.ts:131:212 - error TS2315: Type 'Resolved' is not generic.

131     }, Callback extends (updatedOptions: Options, span: Omit<TracingSpan, "end">) => ReturnType<Callback>>(name: string, operationOptions: Options, callback: Callback, spanOptions?: TracingSpanOptions): Promise<Resolved<ReturnType<Callback>>>;
     

To Reproduce

Steps to reproduce the behavior:

1. yo botbuilder
2. What's the name of your bot? (my-chat-bot)
3. What will your bot do? (Demonstrate the core capabilities of the Microsoft Bot Framework)
4. What programming language do you want to use? TypeScript
5. Which template would you like to start with? (Use arrow keys) Echo Bot - https://aka.ms/bot-template-echo
6. Looking good. Shall I go ahead and create your new bot? (Y/n)

Expected behavior

Completes without errors.

Screenshots

Additional context

[Sebastian-Rogers-BEIS]

Its the version of typescript in use. Changing it to 4.3.2 resolves the issue

[anishprasad01]

Hi @Sebastian-Rogers-BEIS,

Thank you for the report. I have been able to reproduce this issue, and am looking into next steps.