[TypeScript] Typescript Interfaces vs Aliases Union & Intersection Types

TypeScript has 'interface' and 'type', so when to use which?

interface hasName {

    firstName: string;

    lastName: string;

}

interface hasAddress {

    address: string

}

type Player = (hasName & hasAddress) | null;

let player: Player = {firstName: 'Joe', lastName: 'Jonse', address: 'USA'};

It is recommended that to use 'interface' to define the props that obj should have.

'type' is recommended to use when combine multi interfaces to descide a single object like what we show in example.

巴特西

[TypeScript] Typescript Interfaces vs Aliases Union & Intersection Types

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