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implab » implabjs-di
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improved typings
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@@ -27,12 +27,26 export interface Resolver<S extends obje
27 27 <K extends keyof S, O extends { lazy?: false; default?: unknown }>(name: K, opts?: O): (O extends { default: infer T } ? T : never) | NonNullable<S[K]>;
28 28 }
29 29
30 export type DepsMap<K extends key, SK extends key> = { [k in K]: SK | Ref<SK, boolean, unknown> };
30 export type DepsMap<S extends object> = {
31 [k in key]: Refs<S>
32 };
33
34 export type Refs<S extends object> = {
35 [k in keyof S]: Ref<k, boolean, S[k]>;
36 }[keyof S] | keyof S;
37
38 export type Ref<K extends key, L extends boolean, D> = { name: K, lazy?: L, default?: D | null };
31 39
32 export type Ref<K extends key, L extends boolean, D> = { name: K, lazy?: L } | { name: K, lazy?: L, default: D };
40 export type Lazy<T, L extends boolean> = L extends true ? () => T : T;
41
42 export type InferDefault<T> = T extends { default: infer D } ? D : never;
33 43
34 export type Resolved<S, K extends keyof S, L, D> =
35 L extends true ? () => NonNullable<S[K]> | (unknown extends D ? never : D) : NonNullable<S[K]> | (unknown extends D ? never : D);
44 export type Resolve<S extends object, R> =
45 R extends keyof S ? NonNullable<S[R]> :
46 R extends Ref<infer K, infer L, unknown> ?
47 K extends keyof S ? Lazy<NonNullable<S[K]> | InferDefault<R>, L> :
48 never:
49 never;
36 50
37 51 export interface IDescriptorBuilder<S extends object, T, R extends object, O extends keyof S> {
38 52
@@ -42,12 +56,9 export interface IDescriptorBuilder<S ex
42 56 */
43 57 factory(f: (refs: R) => T): void;
44 58
45 wants<X extends DepsMap<Exclude<key, keyof R>, keyof S>>(refs: X):
59 wants<X extends DepsMap<S> & Record<keyof R & keyof X, never>>(refs: X):
46 60 IDescriptorBuilder<S, T, R & {
47 [k in keyof X]:
48 X[k] extends keyof S ? NonNullable<S[X[k]]> :
49 X[k] extends Ref<infer K, infer L, infer D> ? Resolved<S, K & keyof S, L, D> :
50 never
61 [k in keyof X]: Resolve<S, X[k]>;
51 62 }, O>
52 63
53 64 override<K extends O>(name: K, builder: RegistrationBuilder<S, NonNullable<S[K]>>): this;
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@@ -1,7 +1,7
1 1 /* eslint max-classes-per-file: ["error", 20] */
2 2 import { describe, it } from "mocha";
3 3 import { Container } from "../Container";
4 import { ContainerServices } from "../interfaces";
4 import { ContainerServices, DepsMap, Refs, Resolver } from "../interfaces";
5 5 import { fluent } from "../traits";
6 6
7 7 class Foo {
@@ -31,6 +31,19 interface ServicesB {
31 31 zoo?: Foo;
32 32 }
33 33
34 declare const resolver: Resolver<Services>;
35
36 const foo = resolver("foo", {lazy: true});
37
38 const mmap = <X extends DepsMap<Services, string>>(m: X) => {};
39
40 const refs: Refs<Services> = {name: "bar", default: undefined};
41
42 mmap({
43 fooz: {name: "foo", lazy: false, default: undefined },
44 ooz: "bar"
45 });
46
34 47 interface SharedServices {
35 48 foo: Foo;
36 49
@@ -47,13 +60,17 const config = fluent()
47 60 .lifetime("context") // тип активации, время жизни
48 61 .wants({
49 62 zoo: "zoo", // зависимость
63 bar: "bar",
50 64
51 zoo$: { name: "zoo", lazy: true } // отложенная активация,
65 $zoo: { name: "foo", lazy: true, } // отложенная активация,
52 66 //фабричный метод
53 67 })
54 .factory(({ zoo$ }) => // фабрика получает объект с именованными зависимостями
68 .wants({
69 zoom: "bar"
70 })
71 .factory(({ $zoo, zoo }) => // фабрика получает объект с именованными зависимостями
55 72 // удобно для деструктурирования
56 new Bar(zoo$) // создается экземпляр сервиса
73 new Bar($zoo) // создается экземпляр сервиса
57 74 ),
58 75 foo: it => it.factory(() => new Foo()),
59 76 baz: it => it.value(new Foo())
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