mirror of
https://github.com/cdr/code-server.git
synced 2025-12-18 06:14:18 +01:00
21 lines
646 B
TypeScript
21 lines
646 B
TypeScript
/*---------------------------------------------------------------------------------------------
|
|
* Copyright (c) Microsoft Corporation. All rights reserved.
|
|
* Licensed under the MIT License. See License.txt in the project root for license information.
|
|
*--------------------------------------------------------------------------------------------*/
|
|
|
|
export function once<T extends Function>(this: unknown, fn: T): T {
|
|
const _this = this;
|
|
let didCall = false;
|
|
let result: unknown;
|
|
|
|
return function () {
|
|
if (didCall) {
|
|
return result;
|
|
}
|
|
|
|
didCall = true;
|
|
result = fn.apply(_this, arguments);
|
|
|
|
return result;
|
|
} as unknown as T;
|
|
}
|