82 lines
3.3 KiB
TypeScript
82 lines
3.3 KiB
TypeScript
import type { ApiItem, IApiItemJson, IApiItemConstructor, IApiItemOptions } from '../items/ApiItem';
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/**
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* Constructor options for {@link (ApiReadonlyMixin:interface)}.
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* @public
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*/
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export interface IApiReadonlyMixinOptions extends IApiItemOptions {
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isReadonly: boolean;
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}
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export interface IApiReadonlyMixinJson extends IApiItemJson {
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isReadonly: boolean;
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}
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/**
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* The mixin base class for API items that cannot be modified after instantiation.
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* Examples such as the readonly modifier and only having a getter but no setter.
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*
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* @remarks
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*
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* This is part of the {@link ApiModel} hierarchy of classes, which are serializable representations of
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* API declarations. The non-abstract classes (e.g. `ApiClass`, `ApiEnum`, `ApiInterface`, etc.) use
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* TypeScript "mixin" functions (e.g. `ApiDeclaredItem`, `ApiItemContainerMixin`, etc.) to add various
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* features that cannot be represented as a normal inheritance chain (since TypeScript does not allow a child class
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* to extend more than one base class). The "mixin" is a TypeScript merged declaration with three components:
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* the function that generates a subclass, an interface that describes the members of the subclass, and
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* a namespace containing static members of the class.
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*
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* @public
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*/
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export interface ApiReadonlyMixin extends ApiItem {
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/**
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* Indicates that the API item's value cannot be assigned by an external consumer.
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*
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* @remarks
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* Examples of API items that would be considered "read only" by API Extractor:
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*
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* - A class or interface's property that has the `readonly` modifier.
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*
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* - A variable that has the `const` modifier.
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*
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* - A property or variable whose TSDoc comment includes the `@readonly` tag.
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*
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* - A property declaration with a getter but no setter.
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*
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* Note that if the `readonly` keyword appears in a type annotation, this does not
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* guarantee that that the API item will be considered readonly. For example:
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*
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* ```ts
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* declare class C {
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* // isReadonly=false in this case, because C.x is assignable
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* public x: readonly string[];
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* }
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* ```
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*/
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readonly isReadonly: boolean;
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serializeInto(jsonObject: Partial<IApiItemJson>): void;
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}
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/**
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* Mixin function for {@link (ApiReadonlyMixin:interface)}.
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*
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* @param baseClass - The base class to be extended
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* @returns A child class that extends baseClass, adding the {@link (ApiReadonlyMixin:interface)}
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* functionality.
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*
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* @public
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*/
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export declare function ApiReadonlyMixin<TBaseClass extends IApiItemConstructor>(baseClass: TBaseClass): TBaseClass & (new (...args: any[]) => ApiReadonlyMixin);
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/**
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* Static members for {@link (ApiReadonlyMixin:interface)}.
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* @public
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*/
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export declare namespace ApiReadonlyMixin {
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/**
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* A type guard that tests whether the specified `ApiItem` subclass extends the `ApiReadonlyMixin` mixin.
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*
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* @remarks
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*
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* The JavaScript `instanceof` operator cannot be used to test for mixin inheritance, because each invocation of
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* the mixin function produces a different subclass. (This could be mitigated by `Symbol.hasInstance`, however
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* the TypeScript type system cannot invoke a runtime test.)
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*/
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function isBaseClassOf(apiItem: ApiItem): apiItem is ApiReadonlyMixin;
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}
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//# sourceMappingURL=ApiReadonlyMixin.d.ts.map
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