chore: support typescript

[moshfeu]

If I understand the API correctly.
Also, I'm not that expert with TypeScript but this is working for me locally. If anyone else who knows typescript can review it, that will be great.

resolve #107

[alma3lol]

Please someone merge this!

[prkirby]

Bumpppppp

[c-vetter]

@moshfeu
Thanks for the PR, I've reviewed it. This needs some work, please see my comments.
I'd like to help out beyond reviewing, but don't have the time right now.

[c-vetter]

Please remove this change. See the docs:

If types is specified, only packages listed will be included in the global scope. For instance:

Besides, "types": "index.d.ts", in package.json already provides the types.

[c-vetter]

Mind the final newline 😉 It's better for the diffs.

[c-vetter]

As it is, I get this error when trying your branch:

error TS2345: Argument of type 'typeof import("./node_modules/inquirer-autocomplete-prompt/index")' is not assignable to parameter of type 'PromptConstructor'.
  Type 'typeof import("./node_modules/inquirer-autocomplete-prompt/index")' provides no match for the signature 'new (question: any, readLine: Interface, answers: Answers): PromptBase'.

10 inquirer.registerPrompt(`autocomplete`, autocomplete)

This is my tsconfig.json:

{
	"extends": "@tsconfig/node12/tsconfig.json",
	"compilerOptions": {
		"esModuleInterop": true,
		"moduleResolution": "node",
		"strict": true,
		"outDir": "./.transpiled",
		"noUncheckedIndexedAccess": true,
		"noPropertyAccessFromIndexSignature": true,
	},
	"include": [ "./" ],
}

It seems to me that this file is missing the actual export types, please verify and fix.

---

export default interface InquirerAutocompletePrompt {}

declare var inquirerAutocompletePrompt: InquirerAutocompletePrompt;
export = inquirerAutocompletePrompt;

I added that 👆 to the end of this file and the error changed to this 👇

error TS2345: Argument of type 'InquirerAutocompletePrompt' is not assignable to parameter of type 'PromptConstructor'.  
  Type 'InquirerAutocompletePrompt' provides no match for the signature 'new (question: any, readLine: Interface, answers: Answers): PromptBase'.

10 inquirer.registerPrompt(`autocomplete`, autocomplete)

Note how typeof import("./node_modules/inquirer-autocomplete-prompt/index") changed to InquirerAutocompletePrompt – that seems to confirm my suspicion.

[c-vetter]

To extend the inquirer interfaces, this seems more appropriate to get alignment:

Suggested change

	declare module 'inquirer' {
	declare namespace inquirer {

See https://github.com/DefinitelyTyped/DefinitelyTyped/blob/master/types/inquirer/index.d.ts#L95

Note: So far, I have not typed across packages myself, so I may be missing something. This comment is really based only on my observation in @types/inquirer.

[ipatalas]

Hi guys, @jayeeson made pretty nice typings in here: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/inquirer-autocomplete-prompt

If there is a will on both sides (@jayeeson and maintainers here) I can spend some time bringing those typings here. Already did a quick proof of concept and seems to work. The typings themselves needs a bit of love to support everything but I'll hold off for now until we have some agreement here.

[jayeeson]

The typings are probably a little outdated but it's a small package. What's the motivation to bring the types in here, if you want TS support just add the DefinitelyTyped package

[ipatalas]

Now I'm having second thoughts. All other inquirer plugins (+ the lib itself) have typings in DefinitelyTyped so it doesn't make sense to break this consistency and I definitely don't want to move them all :)