# Default parameters and Typescript
**URL:** https://discourse.nodered.org/t/default-parameters-and-typescript/68599
**Category:** Developing Nodes
**Created:** [5 October 2022 14:00 UTC](https://discourse.nodered.org/t/default-parameters-and-typescript/68599 "2022-10-05T14:00:48Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@AntekAiR](https://discourse.nodered.org/u/AntekAiR)
#### Post date: [5 October 2022 14:00 UTC](https://discourse.nodered.org/t/default-parameters-and-typescript/68599/1 "2022-10-05T14:00:48Z")
Hi,
I am trying to make node-red library with TypeScript.
Problem is that I cannot set required server in default paramteres.
With javascript and html a lot of libraries do it.
Now in my code I have
" defaults: {
operation: { value: AmpioOutOperation.UpperCase },
name: { value: "" },
server: {type:"xyz\_config", required:true}
},"
and I cannot compile because of server field.
Can someone give me a hint how to fix it?
BR
---
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [6 October 2022 08:45 UTC](https://discourse.nodered.org/t/default-parameters-and-typescript/68599/2 "2022-10-06T08:45:08Z")
It is unclear what your issue is.
Are you getting a typescript error?
Are you getting a runtime error after compilation?
Perhaps if you provide more detail we can assist.
* * *
## PS:
Please use the `` code toolbar button BEFORE pasting code into a post (it keeps the code nicely formatted and readable)
### example...
```auto
defaults: {
operation: { value: AmpioOutOperation.UpperCase },
name: { value: "" },
server: {type:"xyz_config", required:true}
},
```
**is FAR more readable than..**
" defaults: {
operation: { value: AmpioOutOperation.UpperCase },
name: { value: "" },
server: {type:"xyz\_config", required:true}
},"
---
### Author:  [@AntekAiR](https://discourse.nodered.org/u/AntekAiR)
#### Post date: [6 October 2022 09:24 UTC](https://discourse.nodered.org/t/default-parameters-and-typescript/68599/3 "2022-10-06T09:24:53Z")
Thanks, I am quite new to this forum. I am using Node-RED for more than a year but first time creating library.
I had typescript error but for this moment, I did some workaround.
Thanks for response 🙂
---
### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [20 October 2022 09:25 UTC](https://discourse.nodered.org/t/default-parameters-and-typescript/68599/4 "2022-10-20T09:25:21Z")
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