165 lines
3.8 KiB
Plaintext
165 lines
3.8 KiB
Plaintext
=== tests/cases/compiler/weakType.ts ===
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interface Settings {
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timeout?: number;
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>timeout : number
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onError?(): void;
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>onError : () => void
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}
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function getDefaultSettings() {
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>getDefaultSettings : () => { timeout: number; }
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return { timeout: 1000 };
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>{ timeout: 1000 } : { timeout: number; }
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>timeout : number
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>1000 : 1000
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}
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interface CtorOnly {
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new(s: string): { timeout: 1000 }
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>s : string
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>timeout : 1000
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}
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function doSomething(settings: Settings) { /* ... */ }
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>doSomething : (settings: Settings) => void
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>settings : Settings
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// forgot to call `getDefaultSettings`
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doSomething(getDefaultSettings);
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>doSomething(getDefaultSettings) : void
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>doSomething : (settings: Settings) => void
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>getDefaultSettings : () => { timeout: number; }
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doSomething(() => ({ timeout: 1000 }));
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>doSomething(() => ({ timeout: 1000 })) : void
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>doSomething : (settings: Settings) => void
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>() => ({ timeout: 1000 }) : () => { timeout: number; }
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>({ timeout: 1000 }) : { timeout: number; }
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>{ timeout: 1000 } : { timeout: number; }
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>timeout : number
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>1000 : 1000
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doSomething(null as CtorOnly);
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>doSomething(null as CtorOnly) : void
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>doSomething : (settings: Settings) => void
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>null as CtorOnly : CtorOnly
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>null : null
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doSomething(12);
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>doSomething(12) : void
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>doSomething : (settings: Settings) => void
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>12 : 12
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doSomething('completely wrong');
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>doSomething('completely wrong') : void
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>doSomething : (settings: Settings) => void
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>'completely wrong' : "completely wrong"
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doSomething(false);
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>doSomething(false) : void
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>doSomething : (settings: Settings) => void
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>false : false
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// this is an oddly popular way of defining settings
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// this example is from services/textChanges.ts
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type ConfigurableStart = { useStart?: boolean }
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>ConfigurableStart : ConfigurableStart
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>useStart : boolean
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type ConfigurableEnd = { useEnd?: boolean }
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>ConfigurableEnd : ConfigurableEnd
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>useEnd : boolean
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type ConfigurableStartEnd = ConfigurableStart & ConfigurableEnd
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>ConfigurableStartEnd : ConfigurableStartEnd
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interface InsertOptions {
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prefix?: string
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>prefix : string
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suffix?: string
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>suffix : string
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}
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type ChangeOptions = ConfigurableStartEnd & InsertOptions;
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>ChangeOptions : ChangeOptions
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function del(options: ConfigurableStartEnd = {},
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>del : (options?: ConfigurableStartEnd, error?: { error?: number; }) => void
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>options : ConfigurableStartEnd
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>{} : {}
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error: { error?: number } = {}) {
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>error : { error?: number; }
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>error : number
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>{} : {}
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let changes: ChangeOptions[];
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>changes : ChangeOptions[]
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changes.push(options);
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>changes.push(options) : number
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>changes.push : (...items: ChangeOptions[]) => number
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>changes : ChangeOptions[]
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>push : (...items: ChangeOptions[]) => number
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>options : ConfigurableStartEnd
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changes.push(error);
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>changes.push(error) : number
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>changes.push : (...items: ChangeOptions[]) => number
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>changes : ChangeOptions[]
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>push : (...items: ChangeOptions[]) => number
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>error : { error?: number; }
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}
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class K {
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>K : K
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constructor(s: string) { }
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>s : string
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}
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// Ctor isn't a weak type because it has a construct signature
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interface Ctor {
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new (s: string): K
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>s : string
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n?: number
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>n : number
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}
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let ctor: Ctor = K
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>ctor : Ctor
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>K : typeof K
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type Spoiler = { nope?: string }
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>Spoiler : Spoiler
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>nope : string
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type Weak = {
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>Weak : Weak
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a?: number
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>a : number
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properties?: {
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>properties : { b?: number; }
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b?: number
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>b : number
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}
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}
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declare let unknown: {
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>unknown : { properties: { wrong: string; }; }
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properties: {
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>properties : { wrong: string; }
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wrong: string
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>wrong : string
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}
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}
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let weak: Weak & Spoiler = unknown
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>weak : Weak & Spoiler
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>unknown : { properties: { wrong: string; }; }
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