source: trip-planner-front/node_modules/onetime/index.d.ts

Last change on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

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Line 
1declare namespace onetime {
2 interface Options {
3 /**
4 Throw an error when called more than once.
5
6 @default false
7 */
8 throw?: boolean;
9 }
10}
11
12declare const onetime: {
13 /**
14 Ensure a function is only called once. When called multiple times it will return the return value from the first call.
15
16 @param fn - Function that should only be called once.
17 @returns A function that only calls `fn` once.
18
19 @example
20 ```
21 import onetime = require('onetime');
22
23 let i = 0;
24
25 const foo = onetime(() => ++i);
26
27 foo(); //=> 1
28 foo(); //=> 1
29 foo(); //=> 1
30
31 onetime.callCount(foo); //=> 3
32 ```
33 */
34 <ArgumentsType extends unknown[], ReturnType>(
35 fn: (...arguments: ArgumentsType) => ReturnType,
36 options?: onetime.Options
37 ): (...arguments: ArgumentsType) => ReturnType;
38
39 /**
40 Get the number of times `fn` has been called.
41
42 @param fn - Function to get call count from.
43 @returns A number representing how many times `fn` has been called.
44
45 @example
46 ```
47 import onetime = require('onetime');
48
49 const foo = onetime(() => {});
50 foo();
51 foo();
52 foo();
53
54 console.log(onetime.callCount(foo));
55 //=> 3
56 ```
57 */
58 callCount(fn: (...arguments: any[]) => unknown): number;
59
60 // TODO: Remove this for the next major release
61 default: typeof onetime;
62};
63
64export = onetime;
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