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refactor: replace the deprecated __proto__ with Object.getPrototypeOf #1931

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merged 1 commit into from
Sep 29, 2025
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refactor: replace the deprecated __proto__ with Object.getPrototypeOf #1931

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14 changes: 7 additions & 7 deletions src/matchers/mock/toBeRequestedWith.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -231,21 +231,21 @@ const headersMatcher = (
*
* Jest and Jasmine support special matchers like `jasmine.objectContaining`, `expect.arrayContaining`, etc.
*
* All these kind of objects have `sample` and `asymmetricMatch` function in __proto__
* `expect.objectContaining({ foo: 'bar })` -> `{ sample: { foo: 'bar' }, __proto__: asymmetricMatch() {} }`
* All these kind of objects have `sample` and `asymmetricMatch` function in their prototype
* `expect.objectContaining({ foo: 'bar })` -> `{ sample: { foo: 'bar' }, [prototype]: asymmetricMatch() {} }`
*
* jasmine.any and jasmine.anything don't have `sample` property
* @param filter
*/
const isMatcher = (filter: unknown) => {
const proto = Object.getPrototypeOf(filter)
return (
typeof filter === 'object' &&
filter !== null &&
'__proto__' in filter &&
typeof filter.__proto__ === 'object' &&
filter.__proto__ &&
'asymmetricMatch' in filter.__proto__ &&
typeof filter.__proto__.asymmetricMatch === 'function'
typeof proto === 'object' &&
proto &&
'asymmetricMatch' in proto &&
typeof proto.asymmetricMatch === 'function'
)
}

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