Not all of the Error constructors are displayed by TypeScript

My issue is straightforward: I am attempting to utilize the Error constructor that requires a message and an options object. Despite setting my tsconfig.json file to have 

"target": "es2020"
, the Intellisense in VS Code only displays one constructor for Error (the one that just needs a message). Additionally, when I try to view the definition, the file that pops up is named lib.es5.d.ts.

Upon compilation, I receive the following error message:

src/FetchedConfigDataSource.ts:46:37 - error TS2554: Expected 0-1 arguments, but got 2.

46                 throw new Error('', { cause: err });

Where am I going wrong here? Please advise if more clarification is needed.

javascripttypescript

Answer №1

It appears that the implementation of error cause was not completed in 2020. Upgrading to ESNext or a similar version may resolve this issue.

The 2021 update still lists it as a draft:

This suggests that it was officially introduced in es2022.

Answer №2

In ES2020, the options parameter for the Error constructor was not available. This feature was actually introduced in ES2022 (you can confirm its absence from ES2021). Consequently, TypeScript has included this in its declarations for ES2022 and beyond. To access this functionality, make sure to set your --target to "es2022" or a newer version.

Check out the code on the playground: Playground link to code

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