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Toouren
reviewed
Apr 4, 2021
| { | ||
| return array.filter((x): x is FirstType | SecondType | ThirdType => typeof x === type); | ||
| } | ||
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Работать не будет, т.к. в рантайме у x будет тип Object => ни один объект не попадет результирующий массив
Toouren
reviewed
Apr 4, 2021
| numbersOrDatesArrayProp: Array<number | Date>, | ||
| functionProp(flag: boolean): void, | ||
| }; | ||
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Toouren
reviewed
Apr 4, 2021
| { | ||
| return x+y; | ||
| } | ||
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Toouren
reviewed
Apr 4, 2021
| * interface можно изменять и расширять, при создании нового interface с уже использованным именем они сольются | ||
| * в один, interface представляет именнованный тип объекта | ||
| */ | ||
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Toouren
reviewed
Apr 4, 2021
| export function filterUsers(persons: Person[], criteria: {type?: string, name?: string, age?: number, occupation?: string}): User[] { | ||
| return persons.filter(isUser).filter((user) => { | ||
| const criteriaKeys = Object.keys(criteria); | ||
| return criteriaKeys.every((fieldName) => { |
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