forked from sindresorhus/pify
-
Notifications
You must be signed in to change notification settings - Fork 0
/
index.d.ts
78 lines (69 loc) · 2.66 KB
/
index.d.ts
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
/* eslint-disable @typescript-eslint/ban-types */
type Last<T extends readonly unknown[]> = T extends [...any, infer L]
? L
: never;
type DropLast<T extends readonly unknown[]> = T extends [...(infer U), any]
? U
: [];
type StringEndsWith<S, X extends string> = S extends `${infer _}${X}` ? true : false;
interface Options<Includes extends readonly unknown[], Excludes extends readonly unknown[], MultiArgs extends boolean = false, ErrorFirst extends boolean = true> {
multiArgs?: MultiArgs;
include?: Includes;
exclude?: Excludes;
errorFirst?: ErrorFirst;
}
interface InternalOptions<Includes extends readonly unknown[], Excludes extends readonly unknown[], MultiArgs extends boolean = false, ErrorFirst extends boolean = true> {
multiArgs: MultiArgs;
include: Includes;
exclude: Excludes;
errorFirst: ErrorFirst;
}
type Promisify<Args extends readonly unknown[], GenericOptions extends InternalOptions<readonly unknown[], readonly unknown[], boolean, boolean>> = (
...args: DropLast<Args>
) =>
Last<Args> extends (...args: any) => any
? Parameters<Last<Args>> extends [infer SingleCallbackArg] ? GenericOptions extends { errorFirst: true } ? Promise<unknown> : Promise<SingleCallbackArg>
: Promise<
GenericOptions extends {multiArgs: false}
? Last<Parameters<Last<Args>>>
: Parameters<Last<Args>>
>
: never;
type PromisifyModule<
Module extends Record<string, any>,
MultiArgs extends boolean,
ErrorFirst extends boolean,
Includes extends ReadonlyArray<keyof Module>,
Excludes extends ReadonlyArray<keyof Module>,
> = {
[K in keyof Module]: Module[K] extends (...args: infer Args) => any
? K extends Includes[number]
? Promisify<Args, InternalOptions<Includes, Excludes, MultiArgs>>
: K extends Excludes[number]
? Module[K]
: StringEndsWith<K, 'Sync' | 'Stream'> extends true
? Module[K]
: Promisify<Args, InternalOptions<Includes, Excludes, MultiArgs, ErrorFirst>>
: Module[K];
};
declare function pify<
FirstArg,
Args extends readonly unknown[],
MultiArgs extends boolean = false,
ErrorFirst extends boolean = true,
>(
input: (arg: FirstArg, ...args: Args) => any,
options?: Options<[], [], MultiArgs, ErrorFirst>
): Promisify<[FirstArg, ...Args], InternalOptions<[], [], MultiArgs, ErrorFirst>>;
declare function pify<
Module extends Record<string, any>,
Includes extends ReadonlyArray<keyof Module> = [],
Excludes extends ReadonlyArray<keyof Module> = [],
MultiArgs extends boolean = false,
ErrorFirst extends boolean = true,
>(
// eslint-disable-next-line unicorn/prefer-module
module: Module,
options?: Options<Includes, Excludes, MultiArgs, ErrorFirst>
): PromisifyModule<Module, MultiArgs, ErrorFirst, Includes, Excludes>;
export = pify;