Include an option to export types instead of interfaces, for better intellisense

[ianengelbrecht]

Seems types give better hints than interfaces, see example in the attached image. So I'm currently generating the interfaces, then changing them to types with a script, all in a build step. Would be nice if there was an option in json2ts to generate types directly.

[eskwisit]

Indeed.

I understand the historical decision to opt in for interfaces but they're less likely to be first-class citizens to define objects in modern typescript.

However that's where IETF specs clashes with TS best current practices.

Interfaces > Implementation
Types > Definition

EDIT: Good news is they started an implementation, here:

json-schema-to-typescript/src/generator.ts

Lines 362 to 370 in 43ba08b

	function generateStandaloneType(ast: ASTWithStandaloneName, options: Options): string {
	return (
	(hasComment(ast) ? generateComment(ast.comment) + '\n' : '') +
	`export type ${toSafeString(ast.standaloneName)} = ${generateType(
	omit<AST>(ast, 'standaloneName') as AST /* TODO */,
	options,
	)}`
	)
	}

Is it open to PR @bcherny 🙏 ?

Let's see if they start a shift to the latest recommendations.