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ExtenderType, ExtenderTypeOptional do not satisfy the constraint

See original GitHub issue

Describe the bug 🐛

I think 34759d2eb3d96602be372537b0e0392e1d03ae7d introduced a bug to TS definitions.

(type parameter) T in type ExtenderType<T>
Type 'T[P]' does not satisfy the constraint '(...args: any) => any'.
  Type 'T[keyof T]' is not assignable to type '(...args: any) => any'.
    Type 'T[string] | T[number] | T[symbol]' is not assignable to type '(...args: any) => any'.
      Type 'T[string]' is not assignable to type '(...args: any) => any'.ts(2344)

To Reproduce 📝

Build failure:

https://github.com/ScaleLeap/config/pull/44/checks?check_run_id=602773264

But also just inspecting the env-var.d.ts will display the errors in VS Code.

Expected behaviour 🤷‍♂️🤷

No errors.

Screenshots 📷

Environment (please complete the following information) 💻:

OS: macOS
Runtime: VS Code, CLI
Version:

❯ tsc -v
Version 3.8.3

❯ node -v
v12.16.0

Additional context

N/A

Issue Analytics

State:
Created 3 years ago
Reactions:2
Comments:6 (6 by maintainers)

Top GitHub Comments

1reaction

evanshortisscommented, Apr 21, 2020

@moltar can you test the 6.x branch with your application? I believe it resolves the issue.

0reactions

evanshortisscommented, Apr 23, 2020

Likewise, thank you for the report.

I’ll need to look into the testing, since I want these things to be caught by CI! It seems like I need a separate project or something to fully test, since the sample I use in this repo clearly isn’t doing the trick.

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