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di-tory

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Compose applications with dependency injection

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type Scope = 'singleton' | 'module'; type Resolver<M extends object, Params extends object, R> = { (injection: M, params: Params): R; scope?: Scope; }; type Resolvers<Items extends object, M extends object, Params extends object> = { [Item in keyof Items]: Resolver<M, Params, Items[Item]>; }; type NotOf<T extends object> = Record<PropertyKey, unknown> & { [K in keyof T]?: never; }; type Initializers<M, Params> = { [Item in keyof M]?: (this: M[Item], module: Omit<M, Item>, params: Params) => void; }; type SomeImpl<M extends object> = { [key: string]: (self: M, ...args: never[]) => unknown; }; type MethodsOf<Impl extends SomeImpl<M>, M extends object> = { [key in keyof Impl]: Impl[key] extends (self: M, ...args: infer A) => infer R ? (...args: A) => R : never; }; interface IExtendable<Pr extends object, Pb extends object, Params extends object> { private<NPr extends NotOf<Pr & Pb>, NP extends object>(resolvers: Resolvers<NPr, Pr & Pb, NP & Params>, scope?: Scope): ModuleBuilder<{ [p in keyof (Pr & NPr)]: (Pr & NPr)[p]; }, Pb, { [p in keyof (Params & NP)]: (Params & NP)[p]; }>; public<NPb extends NotOf<Pr & Pb>, NP extends object>(resolvers: Resolvers<NPb, Pr & Pb, NP & Params>, scope?: Scope): ModuleBuilder<Pr, { [p in keyof (Pb & NPb)]: (Pb & NPb)[p]; }, { [p in keyof (Params & NP)]: (Params & NP)[p]; }>; privateImpl<Impl extends SomeImpl<Pr & Pb>>(implementation: Impl): ModuleBuilder<{ [p in keyof (Pr & MethodsOf<Impl, Pr & Pb>)]: (Pr & MethodsOf<Impl, Pr & Pb>)[p]; }, Pb, Params>; publicImpl<Impl extends SomeImpl<Pr & Pb>>(implementation: Impl): ModuleBuilder<Pr, { [p in keyof (Pb & MethodsOf<Impl, Pr & Pb>)]: (Pb & MethodsOf<Impl, Pr & Pb>)[p]; }, Params>; init(initializers: Initializers<Pr & Pb, Params>): ICreatable<Pb, Params>; } type ICreatable<Pb extends object, Params extends object> = Record<PropertyKey, never> extends Params ? { create(): Pb; } : { create(params: Params): Pb; }; type ModuleBuilder<Pr extends object, Pb extends object, Params extends object> = IExtendable<Pr, Pb, Params> & ICreatable<Pb, Params>; declare const scope: { module: string; singleton: string; }; declare const Module: <Pr extends object = { [key in never]: never; }, Pb extends object = { [key in never]: never; }, Params extends object = { [key in never]: never; }>() => ModuleBuilder<Pr, Pb, Params>; export { Module, Module as default, scope };