utils/node_modules/@microsoft/api-extractor-model/lib/mixins/ApiExportedMixin.d.ts
2024-02-07 01:33:07 -05:00

83 lines
3.0 KiB
TypeScript

import type { ApiItem, IApiItemJson, IApiItemConstructor, IApiItemOptions } from '../items/ApiItem';
/**
* Constructor options for {@link (IApiExportedMixinOptions:interface)}.
* @public
*/
export interface IApiExportedMixinOptions extends IApiItemOptions {
isExported: boolean;
}
export interface IApiExportedMixinJson extends IApiItemJson {
isExported: boolean;
}
/**
* The mixin base class for API items that can be exported.
*
* @remarks
*
* This is part of the {@link ApiModel} hierarchy of classes, which are serializable representations of
* API declarations. The non-abstract classes (e.g. `ApiClass`, `ApiEnum`, `ApiInterface`, etc.) use
* TypeScript "mixin" functions (e.g. `ApiDeclaredItem`, `ApiItemContainerMixin`, etc.) to add various
* features that cannot be represented as a normal inheritance chain (since TypeScript does not allow a child class
* to extend more than one base class). The "mixin" is a TypeScript merged declaration with three components:
* the function that generates a subclass, an interface that describes the members of the subclass, and
* a namespace containing static members of the class.
*
* @public
*/
export interface ApiExportedMixin extends ApiItem {
/**
* Whether the declaration is exported from its parent item container (i.e. either an `ApiEntryPoint` or an
* `ApiNamespace`).
*
* @remarks
* Suppose `index.ts` is your entry point:
*
* ```ts
* // index.ts
*
* export class A {}
* class B {}
*
* namespace n {
* export class C {}
* class D {}
* }
*
* // file.ts
* export class E {}
* ```
*
* Classes `A` and `C` are both exported, while classes `B`, `D`, and `E` are not. `E` is exported from its
* local file, but not from its parent item container (i.e. the entry point).
*
*/
readonly isExported: boolean;
/** @override */
serializeInto(jsonObject: Partial<IApiItemJson>): void;
}
/**
* Mixin function for {@link (ApiExportedMixin:interface)}.
*
* @param baseClass - The base class to be extended
* @returns A child class that extends baseClass, adding the {@link (ApiExportedMixin:interface)} functionality.
*
* @public
*/
export declare function ApiExportedMixin<TBaseClass extends IApiItemConstructor>(baseClass: TBaseClass): TBaseClass & (new (...args: any[]) => ApiExportedMixin);
/**
* Static members for {@link (ApiExportedMixin:interface)}.
* @public
*/
export declare namespace ApiExportedMixin {
/**
* A type guard that tests whether the specified `ApiItem` subclass extends the `ApiExportedMixin` mixin.
*
* @remarks
*
* The JavaScript `instanceof` operator cannot be used to test for mixin inheritance, because each invocation of
* the mixin function produces a different subclass. (This could be mitigated by `Symbol.hasInstance`, however
* the TypeScript type system cannot invoke a runtime test.)
*/
function isBaseClassOf(apiItem: ApiItem): apiItem is ApiExportedMixin;
}
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