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condition.ts
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condition.ts
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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
const toString = Object.prototype.toString;
const MULTIPLE_VALID_OPTIONS_SYMBOL = Symbol('JEST_MULTIPLE_VALID_OPTIONS');
function validationConditionSingle(
option: unknown,
validOption: unknown,
): boolean {
return (
option === null ||
option === undefined ||
(typeof option === 'function' && typeof validOption === 'function') ||
toString.call(option) === toString.call(validOption)
);
}
export function getValues<T = unknown>(validOption: T): Array<T> {
if (
Array.isArray(validOption) &&
// @ts-expect-error
validOption[MULTIPLE_VALID_OPTIONS_SYMBOL]
) {
return validOption as Array<T>;
}
return [validOption];
}
export function validationCondition(
option: unknown,
validOption: unknown,
): boolean {
return getValues(validOption).some(e => validationConditionSingle(option, e));
}
export function multipleValidOptions<T extends Array<unknown>>(
...args: T
): T[number] {
const options = <T>[...args];
// @ts-expect-error
options[MULTIPLE_VALID_OPTIONS_SYMBOL] = true;
return options;
}