Error TS2350 when create a new Promise in certain situations #117

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fergalmoran · 2025-08-09T17:15:04Z

fergalmoran commented

2025-08-09 17:15:04 +00:00

Originally created by @QuinntyneBrown on 3/26/2018

Using the .NET Core 2.1 Template when creating a new Promise in certain situation, you get a TS2350 error.

It looks like there is another Promise type definition that Visual Studio is getting confused with, Q.IPromise.

The following code inside a HubClient Service will raise an error as the compiler thinks I'm trying to use Q.IPromise and not the native promise.

public connect(): Promise {
if (this._connect) return this._connect;

this._connect = new Promise((resolve) => {
  this._connection = this._connection || new HubConnection("/signalrDemoHub");
  this._connection.start().then(() => resolve());
});

return this._connect;

}

*Originally created by @QuinntyneBrown on 3/26/2018* Using the .NET Core 2.1 Template when creating a new Promise in certain situation, you get a TS2350 error. It looks like there is another Promise type definition that Visual Studio is getting confused with, Q.IPromise. The following code inside a HubClient Service will raise an error as the compiler thinks I'm trying to use Q.IPromise and not the native promise. public connect(): Promise<any> { if (this._connect) return this._connect; this._connect = new Promise((resolve) => { this._connection = this._connection || new HubConnection("/signalrDemoHub"); this._connection.start().then(() => resolve()); }); return this._connect; }

fergalmoran closed this issue

2025-08-09 17:15:04 +00:00

fergalmoran referenced this issue

2025-08-09 17:20:44 +00:00

Add React Redux template in ES6 syntax #117 #1578

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Reference: github/JavaScriptServices#117