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=== tests/cases/compiler/weakType.ts ===
interface Settings {
>Settings : Symbol(Settings, Decl(weakType.ts, 0, 0))
timeout?: number;
>timeout : Symbol(Settings.timeout, Decl(weakType.ts, 0, 20))
onError?(): void;
>onError : Symbol(Settings.onError, Decl(weakType.ts, 1, 21))
}
function getDefaultSettings() {
>getDefaultSettings : Symbol(getDefaultSettings, Decl(weakType.ts, 3, 1))
return { timeout: 1000 };
>timeout : Symbol(timeout, Decl(weakType.ts, 6, 12))
}
interface CtorOnly {
>CtorOnly : Symbol(CtorOnly, Decl(weakType.ts, 7, 1))
new(s: string): { timeout: 1000 }
>s : Symbol(s, Decl(weakType.ts, 9, 8))
>timeout : Symbol(timeout, Decl(weakType.ts, 9, 21))
}
function doSomething(settings: Settings) { /* ... */ }
>doSomething : Symbol(doSomething, Decl(weakType.ts, 10, 1))
>settings : Symbol(settings, Decl(weakType.ts, 12, 21))
>Settings : Symbol(Settings, Decl(weakType.ts, 0, 0))
// forgot to call `getDefaultSettings`
doSomething(getDefaultSettings);
>doSomething : Symbol(doSomething, Decl(weakType.ts, 10, 1))
>getDefaultSettings : Symbol(getDefaultSettings, Decl(weakType.ts, 3, 1))
doSomething(() => ({ timeout: 1000 }));
>doSomething : Symbol(doSomething, Decl(weakType.ts, 10, 1))
>timeout : Symbol(timeout, Decl(weakType.ts, 15, 20))
doSomething(null as CtorOnly);
>doSomething : Symbol(doSomething, Decl(weakType.ts, 10, 1))
>CtorOnly : Symbol(CtorOnly, Decl(weakType.ts, 7, 1))
doSomething(12);
>doSomething : Symbol(doSomething, Decl(weakType.ts, 10, 1))
doSomething('completely wrong');
>doSomething : Symbol(doSomething, Decl(weakType.ts, 10, 1))
doSomething(false);
>doSomething : Symbol(doSomething, Decl(weakType.ts, 10, 1))
// this is an oddly popular way of defining settings
// this example is from services/textChanges.ts
type ConfigurableStart = { useStart?: boolean }
>ConfigurableStart : Symbol(ConfigurableStart, Decl(weakType.ts, 19, 19))
>useStart : Symbol(useStart, Decl(weakType.ts, 23, 26))
type ConfigurableEnd = { useEnd?: boolean }
>ConfigurableEnd : Symbol(ConfigurableEnd, Decl(weakType.ts, 23, 47))
>useEnd : Symbol(useEnd, Decl(weakType.ts, 24, 24))
type ConfigurableStartEnd = ConfigurableStart & ConfigurableEnd
>ConfigurableStartEnd : Symbol(ConfigurableStartEnd, Decl(weakType.ts, 24, 43))
>ConfigurableStart : Symbol(ConfigurableStart, Decl(weakType.ts, 19, 19))
>ConfigurableEnd : Symbol(ConfigurableEnd, Decl(weakType.ts, 23, 47))
interface InsertOptions {
>InsertOptions : Symbol(InsertOptions, Decl(weakType.ts, 25, 63))
prefix?: string
>prefix : Symbol(InsertOptions.prefix, Decl(weakType.ts, 26, 25))
suffix?: string
>suffix : Symbol(InsertOptions.suffix, Decl(weakType.ts, 27, 19))
}
type ChangeOptions = ConfigurableStartEnd & InsertOptions;
>ChangeOptions : Symbol(ChangeOptions, Decl(weakType.ts, 29, 1))
>ConfigurableStartEnd : Symbol(ConfigurableStartEnd, Decl(weakType.ts, 24, 43))
>InsertOptions : Symbol(InsertOptions, Decl(weakType.ts, 25, 63))
function del(options: ConfigurableStartEnd = {},
>del : Symbol(del, Decl(weakType.ts, 30, 58))
>options : Symbol(options, Decl(weakType.ts, 32, 13))
>ConfigurableStartEnd : Symbol(ConfigurableStartEnd, Decl(weakType.ts, 24, 43))
error: { error?: number } = {}) {
>error : Symbol(error, Decl(weakType.ts, 32, 48))
>error : Symbol(error, Decl(weakType.ts, 33, 21))
let changes: ChangeOptions[];
>changes : Symbol(changes, Decl(weakType.ts, 34, 7))
>ChangeOptions : Symbol(ChangeOptions, Decl(weakType.ts, 29, 1))
changes.push(options);
>changes.push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
>changes : Symbol(changes, Decl(weakType.ts, 34, 7))
>push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
>options : Symbol(options, Decl(weakType.ts, 32, 13))
changes.push(error);
>changes.push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
>changes : Symbol(changes, Decl(weakType.ts, 34, 7))
>push : Symbol(Array.push, Decl(lib.es5.d.ts, --, --))
>error : Symbol(error, Decl(weakType.ts, 32, 48))
}
class K {
>K : Symbol(K, Decl(weakType.ts, 37, 1))
constructor(s: string) { }
>s : Symbol(s, Decl(weakType.ts, 40, 16))
}
// Ctor isn't a weak type because it has a construct signature
interface Ctor {
>Ctor : Symbol(Ctor, Decl(weakType.ts, 41, 1))
new (s: string): K
>s : Symbol(s, Decl(weakType.ts, 44, 9))
>K : Symbol(K, Decl(weakType.ts, 37, 1))
n?: number
>n : Symbol(Ctor.n, Decl(weakType.ts, 44, 22))
}
let ctor: Ctor = K
>ctor : Symbol(ctor, Decl(weakType.ts, 47, 3))
>Ctor : Symbol(Ctor, Decl(weakType.ts, 41, 1))
>K : Symbol(K, Decl(weakType.ts, 37, 1))
type Spoiler = { nope?: string }
>Spoiler : Symbol(Spoiler, Decl(weakType.ts, 47, 18))
>nope : Symbol(nope, Decl(weakType.ts, 49, 16))
type Weak = {
>Weak : Symbol(Weak, Decl(weakType.ts, 49, 32))
a?: number
>a : Symbol(a, Decl(weakType.ts, 50, 13))
properties?: {
>properties : Symbol(properties, Decl(weakType.ts, 51, 14))
b?: number
>b : Symbol(b, Decl(weakType.ts, 52, 18))
}
}
declare let unknown: {
>unknown : Symbol(unknown, Decl(weakType.ts, 56, 11))
properties: {
>properties : Symbol(properties, Decl(weakType.ts, 56, 22))
wrong: string
>wrong : Symbol(wrong, Decl(weakType.ts, 57, 17))
}
}
let weak: Weak & Spoiler = unknown
>weak : Symbol(weak, Decl(weakType.ts, 61, 3))
>Weak : Symbol(Weak, Decl(weakType.ts, 49, 32))
>Spoiler : Symbol(Spoiler, Decl(weakType.ts, 47, 18))
>unknown : Symbol(unknown, Decl(weakType.ts, 56, 11))
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