Skip to main content

TypeScript–Compilation failed for d.ts files

A colleague was working on a web application and decided to make the switch from regular JavaScript to TypeScript. To get the type system happy, he loaded the necessary Type Definition(.d.ts) files for jQuery and some other external libraries he was using in this project.

After doing that, he got a long list with compiler errors inside the type definition files. Here is a subset of the errors he got:

jquery.d.ts(279,61): error TS1005: '=' expected.
jquery.d.ts(279,64): error TS1109: Expression expected.
jquery.d.ts(279,97): error TS1005: ',' expected.
jquery.d.ts(279,118): error TS1005: '=' expected.
jquery.d.ts(279,121): error TS1109: Expression expected.
jquery.d.ts(342,40): error TS1005: ',' expected.
jquery.d.ts(342,61): error TS1005: '=' expected.
jquery.d.ts(342,64): error TS1109: Expression expected.
jquery.d.ts(342,103): error TS1005: ',' expected.
jquery.d.ts(342,124): error TS1005: '=' expected.
jquery.d.ts(342,127): error TS1109: Expression expected.
jquery.d.ts(352,48): error TS1005: ',' expected.
jquery.d.ts(352,69): error TS1005: '=' expected.
jquery.d.ts(352,72): error TS1109: Expression expected.
jquery.d.ts(352,111): error TS1005: ',' expected.
jquery.d.ts(352,132): error TS1005: '=' expected.
jquery.d.ts(352,135): error TS1109: Expression expected.
jquery.d.ts(677,35): error TS1005: ',' expected.
jquery.d.ts(677,36): error TS1016: A required parameter cannot follow an optional parameter.
jquery.d.ts(692,39): error TS1005: ',' expected.
jquery.d.ts(692,40): error TS1016: A required parameter cannot follow an optional parameter.
jquery.d.ts(722,36): error TS1005: ',' expected.

…

The latest version of the jquery.d.ts file uses a syntax that is new to TypeScript 1.4. As the colleague had TypeScript 1.3 installed, the compiler throw a lot of errors.

There are 2 possible solutions to fix this problem:

  • Option 1 – Upgrade the TypeScript compiler from 1.3 to 1.4.
  • Option 2- Use an earlier version of the .d.ts files. Have a look at the "1.3" branch on DefinitelyTyped.
Labels:

Popular posts from this blog

.NET 8–Keyed/Named Services

A feature that a lot of IoC container libraries support but that was missing in the default DI container provided by Microsoft is the support for Keyed or Named Services. This feature allows you to register the same type multiple times using different names, allowing you to resolve a specific instance based on the circumstances. Although there is some controversy if supporting this feature is a good idea or not, it certainly can be handy. To support this feature a new interface IKeyedServiceProvider got introduced in .NET 8 providing 2 new methods on our ServiceProvider instance: object? GetKeyedService(Type serviceType, object? serviceKey); object GetRequiredKeyedService(Type serviceType, object? serviceKey); To use it, we need to register our service using one of the new extension methods: Resolving the service can be done either through the FromKeyedServices attribute: or by injecting the IKeyedServiceProvider interface and calling the GetRequiredKeyedServic...
Read more

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.
Read more

Kubernetes–Limit your environmental impact

Reducing the carbon footprint and CO2 emission of our (cloud) workloads, is a responsibility of all of us. If you are running a Kubernetes cluster, have a look at Kube-Green . kube-green is a simple Kubernetes operator that automatically shuts down (some of) your pods when you don't need them. A single pod produces about 11 Kg CO2eq per year( here the calculation). Reason enough to give it a try! Installing kube-green in your cluster The easiest way to install the operator in your cluster is through kubectl. We first need to install a cert-manager: kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml Remark: Wait a minute before you continue as it can take some time before the cert-manager is up & running inside your cluster. Now we can install the kube-green operator: kubectl apply -f https://github.com/kube-green/kube-green/releases/latest/download/kube-green.yaml Now in the namespace where we want t...
Read more