2076 lines
49 KiB
Plaintext
2076 lines
49 KiB
Plaintext
=== tests/cases/conformance/controlFlow/controlFlowOptionalChain.ts ===
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// assignments in shortcutting chain
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declare const o: undefined | {
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>o : { (...args: any[]): any; [key: string]: any; [key: number]: any; } | undefined
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[key: string]: any;
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>key : string
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[key: number]: any;
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>key : number
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(...args: any[]): any;
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>args : any[]
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};
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let a: number;
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>a : number
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o?.[a = 1];
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>o?.[a = 1] : any
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>o : { (...args: any[]): any; [key: string]: any; [key: number]: any; } | undefined
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>a = 1 : 1
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>a : number
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>1 : 1
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a.toString();
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>a.toString() : string
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>a.toString : (radix?: number | undefined) => string
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>a : number
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>toString : (radix?: number | undefined) => string
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let b: number;
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>b : number
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o?.x[b = 1];
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>o?.x[b = 1] : any
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>o?.x : any
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>o : { (...args: any[]): any; [key: string]: any; [key: number]: any; } | undefined
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>x : any
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>b = 1 : 1
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>b : number
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>1 : 1
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b.toString();
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>b.toString() : string
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>b.toString : (radix?: number | undefined) => string
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>b : number
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>toString : (radix?: number | undefined) => string
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let c: number;
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>c : number
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o?.(c = 1)
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>o?.(c = 1) : any
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>o : { (...args: any[]): any; [key: string]: any; [key: number]: any; } | undefined
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>c = 1 : 1
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>c : number
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>1 : 1
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c.toString();
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>c.toString() : string
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>c.toString : (radix?: number | undefined) => string
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>c : number
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>toString : (radix?: number | undefined) => string
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let d: number;
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>d : number
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o?.x(d = 1);
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>o?.x(d = 1) : any
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>o?.x : any
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>o : { (...args: any[]): any; [key: string]: any; [key: number]: any; } | undefined
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>x : any
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>d = 1 : 1
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>d : number
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>1 : 1
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d.toString();
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>d.toString() : string
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>d.toString : (radix?: number | undefined) => string
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>d : number
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>toString : (radix?: number | undefined) => string
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// type predicates
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declare const f: undefined | ((x: any) => x is number);
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>f : ((x: any) => x is number) | undefined
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>x : any
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declare const x: string | number;
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>x : string | number
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if (f?.(x)) {
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>f?.(x) : boolean | undefined
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>f : ((x: any) => x is number) | undefined
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>x : string | number
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x; // number
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>x : number
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f; // (x: any) => x is number
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>f : (x: any) => x is number
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f(x);
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>f(x) : boolean
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>f : (x: any) => x is number
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>x : number
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}
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else {
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x;
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>x : string | number
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f;
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>f : ((x: any) => x is number) | undefined
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f(x);
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>f(x) : boolean
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>f : ((x: any) => x is number) | undefined
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>x : string | number
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}
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x;
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>x : string | number
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f;
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>f : ((x: any) => x is number) | undefined
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f(x);
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>f(x) : boolean
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>f : ((x: any) => x is number) | undefined
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>x : string | number
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declare const o2: { f(x: any): x is number; } | undefined;
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>o2 : { f(x: any): x is number; } | undefined
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>f : (x: any) => x is number
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>x : any
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if (o2?.f(x)) {
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>o2?.f(x) : boolean | undefined
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>o2?.f : ((x: any) => x is number) | undefined
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>o2 : { f(x: any): x is number; } | undefined
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>f : ((x: any) => x is number) | undefined
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>x : string | number
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x; // number
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>x : number
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o2.f; // (x: any) => x is number
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>o2.f : (x: any) => x is number
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>o2 : { f(x: any): x is number; }
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>f : (x: any) => x is number
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o2?.f;
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>o2?.f : (x: any) => x is number
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>o2 : { f(x: any): x is number; }
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>f : (x: any) => x is number
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o2?.f(x);
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>o2?.f(x) : boolean
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>o2?.f : (x: any) => x is number
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>o2 : { f(x: any): x is number; }
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>f : (x: any) => x is number
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>x : number
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}
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else {
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x;
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>x : string | number
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o2;
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>o2 : { f(x: any): x is number; } | undefined
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o2?.f;
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>o2?.f : ((x: any) => x is number) | undefined
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>o2 : { f(x: any): x is number; } | undefined
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>f : ((x: any) => x is number) | undefined
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o2.f;
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>o2.f : (x: any) => x is number
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>o2 : { f(x: any): x is number; } | undefined
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>f : (x: any) => x is number
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}
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x;
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>x : string | number
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o2;
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>o2 : { f(x: any): x is number; } | undefined
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o2?.f;
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>o2?.f : ((x: any) => x is number) | undefined
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>o2 : { f(x: any): x is number; } | undefined
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>f : ((x: any) => x is number) | undefined
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o2.f;
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>o2.f : (x: any) => x is number
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>o2 : { f(x: any): x is number; } | undefined
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>f : (x: any) => x is number
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declare const o3: { x: 1, y: string } | { x: 2, y: number } | undefined;
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>o3 : { x: 1; y: string; } | { x: 2; y: number; } | undefined
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>x : 1
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>y : string
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>x : 2
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>y : number
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if (o3?.x === 1) {
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>o3?.x === 1 : boolean
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>o3?.x : 1 | 2 | undefined
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>o3 : { x: 1; y: string; } | { x: 2; y: number; } | undefined
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>x : 1 | 2 | undefined
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>1 : 1
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o3;
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>o3 : { x: 1; y: string; }
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o3.x;
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>o3.x : 1
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>o3 : { x: 1; y: string; }
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>x : 1
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o3?.x;
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>o3?.x : 1
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>o3 : { x: 1; y: string; }
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>x : 1
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}
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else {
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o3;
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>o3 : { x: 2; y: number; } | undefined
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o3?.x;
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>o3?.x : 2 | undefined
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>o3 : { x: 2; y: number; } | undefined
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>x : 2 | undefined
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o3.x;
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>o3.x : 2
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>o3 : { x: 2; y: number; } | undefined
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>x : 2
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}
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o3;
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>o3 : { x: 1; y: string; } | { x: 2; y: number; } | undefined
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o3?.x;
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>o3?.x : 1 | 2 | undefined
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>o3 : { x: 1; y: string; } | { x: 2; y: number; } | undefined
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>x : 1 | 2 | undefined
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o3.x;
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>o3.x : 1 | 2
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>o3 : { x: 1; y: string; } | { x: 2; y: number; } | undefined
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>x : 1 | 2
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declare const o4: { x?: { y: boolean } };
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; } | undefined
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>y : boolean
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if (o4.x?.y) {
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>o4.x?.y : boolean | undefined
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>o4.x : { y: boolean; } | undefined
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; } | undefined
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>y : boolean | undefined
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o4.x; // { y: boolean }
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>o4.x : { y: boolean; }
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; }
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o4.x.y; // true
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>o4.x.y : true
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>o4.x : { y: boolean; }
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; }
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>y : true
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o4.x?.y; // true
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>o4.x?.y : true
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>o4.x : { y: boolean; }
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; }
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>y : true
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}
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else {
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o4.x;
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>o4.x : { y: boolean; } | undefined
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; } | undefined
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o4.x?.y;
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>o4.x?.y : boolean | undefined
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>o4.x : { y: boolean; } | undefined
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; } | undefined
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>y : boolean | undefined
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o4.x.y;
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>o4.x.y : boolean
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>o4.x : { y: boolean; } | undefined
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; } | undefined
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>y : boolean
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}
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o4.x;
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>o4.x : { y: boolean; } | undefined
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; } | undefined
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o4.x?.y;
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>o4.x?.y : boolean | undefined
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>o4.x : { y: boolean; } | undefined
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; } | undefined
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>y : boolean | undefined
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o4.x.y;
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>o4.x.y : boolean
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>o4.x : { y: boolean; } | undefined
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>o4 : { x?: { y: boolean; } | undefined; }
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>x : { y: boolean; } | undefined
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>y : boolean
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declare const o5: { x?: { y: { z?: { w: boolean } } } };
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>o5 : { x?: { y: { z?: { w: boolean; };}; } | undefined; }
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>x : { y: { z?: { w: boolean; };}; } | undefined
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>y : { z?: { w: boolean; } | undefined; }
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>z : { w: boolean; } | undefined
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>w : boolean
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if (o5.x?.y.z?.w) {
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>o5.x?.y.z?.w : boolean | undefined
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>o5.x?.y.z : { w: boolean; } | undefined
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>o5.x?.y : { z?: { w: boolean; } | undefined; } | undefined
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>y : { z?: { w: boolean; } | undefined; } | undefined
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>z : { w: boolean; } | undefined
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>w : boolean | undefined
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o5.x;
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; }
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; }
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o5.x.y;
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>o5.x.y : { z?: { w: boolean; } | undefined; }
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; }
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; }
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>y : { z?: { w: boolean; } | undefined; }
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o5.x.y.z;
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>o5.x.y.z : { w: boolean; }
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>o5.x.y : { z?: { w: boolean; } | undefined; }
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; }
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; }
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>y : { z?: { w: boolean; } | undefined; }
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>z : { w: boolean; }
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o5.x.y.z.w; // true
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>o5.x.y.z.w : true
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>o5.x.y.z : { w: boolean; }
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>o5.x.y : { z?: { w: boolean; } | undefined; }
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; }
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; }
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>y : { z?: { w: boolean; } | undefined; }
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>z : { w: boolean; }
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>w : true
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o5.x.y.z?.w; // true
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>o5.x.y.z?.w : true
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>o5.x.y.z : { w: boolean; }
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>o5.x.y : { z?: { w: boolean; } | undefined; }
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; }
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; }
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>y : { z?: { w: boolean; } | undefined; }
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>z : { w: boolean; }
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>w : true
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o5.x?.y.z.w; // true
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>o5.x?.y.z.w : true
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>o5.x?.y.z : { w: boolean; }
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>o5.x?.y : { z?: { w: boolean; } | undefined; }
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; }
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; }
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>y : { z?: { w: boolean; } | undefined; }
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>z : { w: boolean; }
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>w : true
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o5.x?.y.z?.w; // true
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>o5.x?.y.z?.w : true
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>o5.x?.y.z : { w: boolean; }
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>o5.x?.y : { z?: { w: boolean; } | undefined; }
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; }
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; }
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>y : { z?: { w: boolean; } | undefined; }
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>z : { w: boolean; }
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>w : true
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}
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else {
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o5.x;
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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o5.x?.y;
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>o5.x?.y : { z?: { w: boolean; } | undefined; } | undefined
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>y : { z?: { w: boolean; } | undefined; } | undefined
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o5.x?.y.z;
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>o5.x?.y.z : { w: boolean; } | undefined
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>o5.x?.y : { z?: { w: boolean; } | undefined; } | undefined
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>y : { z?: { w: boolean; } | undefined; } | undefined
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>z : { w: boolean; } | undefined
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o5.x?.y.z?.w;
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>o5.x?.y.z?.w : boolean | undefined
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>o5.x?.y.z : { w: boolean; } | undefined
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>o5.x?.y : { z?: { w: boolean; } | undefined; } | undefined
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>y : { z?: { w: boolean; } | undefined; } | undefined
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>z : { w: boolean; } | undefined
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>w : boolean | undefined
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o5.x.y;
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>o5.x.y : { z?: { w: boolean; } | undefined; }
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>y : { z?: { w: boolean; } | undefined; }
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o5.x.y.z.w;
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>o5.x.y.z.w : boolean
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>o5.x.y.z : { w: boolean; } | undefined
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>o5.x.y : { z?: { w: boolean; } | undefined; }
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
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>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>y : { z?: { w: boolean; } | undefined; }
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>z : { w: boolean; } | undefined
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>w : boolean
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}
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o5.x;
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>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
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>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
|
|
>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
|
|
o5.x?.y;
|
|
>o5.x?.y : { z?: { w: boolean; } | undefined; } | undefined
|
|
>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
|
|
>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
>y : { z?: { w: boolean; } | undefined; } | undefined
|
|
|
|
o5.x?.y.z;
|
|
>o5.x?.y.z : { w: boolean; } | undefined
|
|
>o5.x?.y : { z?: { w: boolean; } | undefined; } | undefined
|
|
>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
|
|
>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
>y : { z?: { w: boolean; } | undefined; } | undefined
|
|
>z : { w: boolean; } | undefined
|
|
|
|
o5.x?.y.z?.w;
|
|
>o5.x?.y.z?.w : boolean | undefined
|
|
>o5.x?.y.z : { w: boolean; } | undefined
|
|
>o5.x?.y : { z?: { w: boolean; } | undefined; } | undefined
|
|
>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
|
|
>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
>y : { z?: { w: boolean; } | undefined; } | undefined
|
|
>z : { w: boolean; } | undefined
|
|
>w : boolean | undefined
|
|
|
|
o5.x.y;
|
|
>o5.x.y : { z?: { w: boolean; } | undefined; }
|
|
>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
|
|
>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
>y : { z?: { w: boolean; } | undefined; }
|
|
|
|
o5.x.y.z.w;
|
|
>o5.x.y.z.w : boolean
|
|
>o5.x.y.z : { w: boolean; } | undefined
|
|
>o5.x.y : { z?: { w: boolean; } | undefined; }
|
|
>o5.x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
>o5 : { x?: { y: { z?: { w: boolean; } | undefined; }; } | undefined; }
|
|
>x : { y: { z?: { w: boolean; } | undefined; }; } | undefined
|
|
>y : { z?: { w: boolean; } | undefined; }
|
|
>z : { w: boolean; } | undefined
|
|
>w : boolean
|
|
|
|
interface Base {
|
|
f(): this is Derived;
|
|
>f : () => this is Derived
|
|
}
|
|
|
|
interface Derived extends Base {
|
|
x: number;
|
|
>x : number
|
|
}
|
|
|
|
declare const o6: Base | undefined;
|
|
>o6 : Base | undefined
|
|
|
|
if (o6?.f()) {
|
|
>o6?.f() : boolean | undefined
|
|
>o6?.f : (() => this is Derived) | undefined
|
|
>o6 : Base | undefined
|
|
>f : (() => this is Derived) | undefined
|
|
|
|
o6; // Derived
|
|
>o6 : Derived
|
|
|
|
o6.f;
|
|
>o6.f : () => this is Derived
|
|
>o6 : Derived
|
|
>f : () => this is Derived
|
|
}
|
|
else {
|
|
o6;
|
|
>o6 : Base | undefined
|
|
|
|
o6?.f;
|
|
>o6?.f : (() => this is Derived) | undefined
|
|
>o6 : Base | undefined
|
|
>f : (() => this is Derived) | undefined
|
|
|
|
o6.f;
|
|
>o6.f : () => this is Derived
|
|
>o6 : Base | undefined
|
|
>f : () => this is Derived
|
|
}
|
|
o6;
|
|
>o6 : Base | undefined
|
|
|
|
o6?.f;
|
|
>o6?.f : (() => this is Derived) | undefined
|
|
>o6 : Base | undefined
|
|
>f : (() => this is Derived) | undefined
|
|
|
|
o6.f;
|
|
>o6.f : () => this is Derived
|
|
>o6 : Base | undefined
|
|
>f : () => this is Derived
|
|
|
|
// asserts
|
|
declare const isDefined: <T>(value: T) => asserts value is NonNullable<T>;
|
|
>isDefined : <T>(value: T) => asserts value is NonNullable<T>
|
|
>value : T
|
|
|
|
declare const isString: (value: unknown) => asserts value is string;
|
|
>isString : (value: unknown) => asserts value is string
|
|
>value : unknown
|
|
|
|
declare const maybeIsString: undefined | ((value: unknown) => asserts value is string);
|
|
>maybeIsString : ((value: unknown) => asserts value is string) | undefined
|
|
>value : unknown
|
|
|
|
declare const maybeNever: undefined | (() => never);
|
|
>maybeNever : (() => never) | undefined
|
|
|
|
function f01(x: unknown) {
|
|
>f01 : (x: unknown) => void
|
|
>x : unknown
|
|
|
|
if (!!true) {
|
|
>!!true : true
|
|
>!true : false
|
|
>true : true
|
|
|
|
isString?.(x);
|
|
>isString?.(x) : void
|
|
>isString : (value: unknown) => asserts value is string
|
|
>x : unknown
|
|
|
|
x;
|
|
>x : string
|
|
}
|
|
if (!!true) {
|
|
>!!true : true
|
|
>!true : false
|
|
>true : true
|
|
|
|
maybeIsString?.(x);
|
|
>maybeIsString?.(x) : void | undefined
|
|
>maybeIsString : ((value: unknown) => asserts value is string) | undefined
|
|
>x : unknown
|
|
|
|
x;
|
|
>x : unknown
|
|
}
|
|
if (!!true) {
|
|
>!!true : true
|
|
>!true : false
|
|
>true : true
|
|
|
|
isDefined(maybeIsString);
|
|
>isDefined(maybeIsString) : void
|
|
>isDefined : <T>(value: T) => asserts value is NonNullable<T>
|
|
>maybeIsString : ((value: unknown) => asserts value is string) | undefined
|
|
|
|
maybeIsString?.(x);
|
|
>maybeIsString?.(x) : void
|
|
>maybeIsString : (value: unknown) => asserts value is string
|
|
>x : unknown
|
|
|
|
x;
|
|
>x : unknown
|
|
}
|
|
if (!!true) {
|
|
>!!true : true
|
|
>!true : false
|
|
>true : true
|
|
|
|
maybeNever?.();
|
|
>maybeNever?.() : undefined
|
|
>maybeNever : (() => never) | undefined
|
|
|
|
x;
|
|
>x : unknown
|
|
}
|
|
}
|
|
|
|
type Thing = { foo: string | number, bar(): number, baz: object };
|
|
>Thing : Thing
|
|
>foo : string | number
|
|
>bar : () => number
|
|
>baz : object
|
|
|
|
function f10(o: Thing | undefined, value: number) {
|
|
>f10 : (o: Thing | undefined, value: number) => void
|
|
>o : Thing | undefined
|
|
>value : number
|
|
|
|
if (o?.foo === value) {
|
|
>o?.foo === value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : number
|
|
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
if (o?.["foo"] === value) {
|
|
>o?.["foo"] === value : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>value : number
|
|
|
|
o["foo"];
|
|
>o["foo"] : number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() === value) {
|
|
>o?.bar() === value : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>value : number
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
if (o?.foo == value) {
|
|
>o?.foo == value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : number
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (o?.["foo"] == value) {
|
|
>o?.["foo"] == value : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>value : number
|
|
|
|
o["foo"];
|
|
>o["foo"] : string | number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() == value) {
|
|
>o?.bar() == value : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>value : number
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
}
|
|
|
|
function f11(o: Thing | null, value: number) {
|
|
>f11 : (o: Thing | null, value: number) => void
|
|
>o : Thing | null
|
|
>null : null
|
|
>value : number
|
|
|
|
if (o?.foo === value) {
|
|
>o?.foo === value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | null
|
|
>foo : string | number | undefined
|
|
>value : number
|
|
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
if (o?.["foo"] === value) {
|
|
>o?.["foo"] === value : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | null
|
|
>"foo" : "foo"
|
|
>value : number
|
|
|
|
o["foo"];
|
|
>o["foo"] : number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() === value) {
|
|
>o?.bar() === value : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | null
|
|
>bar : (() => number) | undefined
|
|
>value : number
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
if (o?.foo == value) {
|
|
>o?.foo == value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | null
|
|
>foo : string | number | undefined
|
|
>value : number
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (o?.["foo"] == value) {
|
|
>o?.["foo"] == value : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | null
|
|
>"foo" : "foo"
|
|
>value : number
|
|
|
|
o["foo"];
|
|
>o["foo"] : string | number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() == value) {
|
|
>o?.bar() == value : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | null
|
|
>bar : (() => number) | undefined
|
|
>value : number
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
}
|
|
|
|
function f12(o: Thing | undefined, value: number | undefined) {
|
|
>f12 : (o: Thing | undefined, value: number | undefined) => void
|
|
>o : Thing | undefined
|
|
>value : number | undefined
|
|
|
|
if (o?.foo === value) {
|
|
>o?.foo === value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : number | undefined
|
|
|
|
o.foo; // Error
|
|
>o.foo : number
|
|
>o : Thing | undefined
|
|
>foo : number
|
|
}
|
|
if (o?.["foo"] === value) {
|
|
>o?.["foo"] === value : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>value : number | undefined
|
|
|
|
o["foo"]; // Error
|
|
>o["foo"] : number
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() === value) {
|
|
>o?.bar() === value : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>value : number | undefined
|
|
|
|
o.bar; // Error
|
|
>o.bar : () => number
|
|
>o : Thing | undefined
|
|
>bar : () => number
|
|
}
|
|
if (o?.foo == value) {
|
|
>o?.foo == value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : number | undefined
|
|
|
|
o.foo; // Error
|
|
>o.foo : number
|
|
>o : Thing | undefined
|
|
>foo : number
|
|
}
|
|
if (o?.["foo"] == value) {
|
|
>o?.["foo"] == value : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>value : number | undefined
|
|
|
|
o["foo"]; // Error
|
|
>o["foo"] : number
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() == value) {
|
|
>o?.bar() == value : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>value : number | undefined
|
|
|
|
o.bar; // Error
|
|
>o.bar : () => number
|
|
>o : Thing | undefined
|
|
>bar : () => number
|
|
}
|
|
}
|
|
|
|
function f12a(o: Thing | undefined, value: number | null) {
|
|
>f12a : (o: Thing | undefined, value: number | null) => void
|
|
>o : Thing | undefined
|
|
>value : number | null
|
|
>null : null
|
|
|
|
if (o?.foo === value) {
|
|
>o?.foo === value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : number | null
|
|
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
if (o?.["foo"] === value) {
|
|
>o?.["foo"] === value : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>value : number | null
|
|
|
|
o["foo"];
|
|
>o["foo"] : number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() === value) {
|
|
>o?.bar() === value : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>value : number | null
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
if (o?.foo == value) {
|
|
>o?.foo == value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : number | null
|
|
|
|
o.foo; // Error
|
|
>o.foo : number
|
|
>o : Thing | undefined
|
|
>foo : number
|
|
}
|
|
if (o?.["foo"] == value) {
|
|
>o?.["foo"] == value : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>value : number | null
|
|
|
|
o["foo"]; // Error
|
|
>o["foo"] : number
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() == value) {
|
|
>o?.bar() == value : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>value : number | null
|
|
|
|
o.bar; // Error
|
|
>o.bar : () => number
|
|
>o : Thing | undefined
|
|
>bar : () => number
|
|
}
|
|
}
|
|
|
|
function f13(o: Thing | undefined) {
|
|
>f13 : (o: Thing | undefined) => void
|
|
>o : Thing | undefined
|
|
|
|
if (o?.foo !== undefined) {
|
|
>o?.foo !== undefined : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>undefined : undefined
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (o?.["foo"] !== undefined) {
|
|
>o?.["foo"] !== undefined : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>undefined : undefined
|
|
|
|
o["foo"];
|
|
>o["foo"] : string | number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() !== undefined) {
|
|
>o?.bar() !== undefined : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>undefined : undefined
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
if (o?.foo != undefined) {
|
|
>o?.foo != undefined : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>undefined : undefined
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (o?.["foo"] != undefined) {
|
|
>o?.["foo"] != undefined : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>undefined : undefined
|
|
|
|
o["foo"];
|
|
>o["foo"] : string | number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() != undefined) {
|
|
>o?.bar() != undefined : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>undefined : undefined
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
}
|
|
|
|
function f13a(o: Thing | undefined) {
|
|
>f13a : (o: Thing | undefined) => void
|
|
>o : Thing | undefined
|
|
|
|
if (o?.foo !== null) {
|
|
>o?.foo !== null : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>null : null
|
|
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
if (o?.["foo"] !== null) {
|
|
>o?.["foo"] !== null : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>null : null
|
|
|
|
o["foo"]; // Error
|
|
>o["foo"] : string | number
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() !== null) {
|
|
>o?.bar() !== null : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>null : null
|
|
|
|
o.bar; // Error
|
|
>o.bar : () => number
|
|
>o : Thing | undefined
|
|
>bar : () => number
|
|
}
|
|
if (o?.foo != null) {
|
|
>o?.foo != null : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>null : null
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (o?.["foo"] != null) {
|
|
>o?.["foo"] != null : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>null : null
|
|
|
|
o["foo"];
|
|
>o["foo"] : string | number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() != null) {
|
|
>o?.bar() != null : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>null : null
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
}
|
|
|
|
function f14(o: Thing | null) {
|
|
>f14 : (o: Thing | null) => void
|
|
>o : Thing | null
|
|
>null : null
|
|
|
|
if (o?.foo !== undefined) {
|
|
>o?.foo !== undefined : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | null
|
|
>foo : string | number | undefined
|
|
>undefined : undefined
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (o?.["foo"] !== undefined) {
|
|
>o?.["foo"] !== undefined : boolean
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | null
|
|
>"foo" : "foo"
|
|
>undefined : undefined
|
|
|
|
o["foo"];
|
|
>o["foo"] : string | number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (o?.bar() !== undefined) {
|
|
>o?.bar() !== undefined : boolean
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | null
|
|
>bar : (() => number) | undefined
|
|
>undefined : undefined
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
}
|
|
|
|
function f15(o: Thing | undefined, value: number) {
|
|
>f15 : (o: Thing | undefined, value: number) => void
|
|
>o : Thing | undefined
|
|
>value : number
|
|
|
|
if (o?.foo === value) {
|
|
>o?.foo === value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : number
|
|
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
if (o?.foo !== value) {
|
|
>o?.foo !== value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : number
|
|
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
if (o?.foo == value) {
|
|
>o?.foo == value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : number
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
if (o?.foo != value) {
|
|
>o?.foo != value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : number
|
|
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
}
|
|
|
|
function f15a(o: Thing | undefined, value: unknown) {
|
|
>f15a : (o: Thing | undefined, value: unknown) => void
|
|
>o : Thing | undefined
|
|
>value : unknown
|
|
|
|
if (o?.foo === value) {
|
|
>o?.foo === value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : unknown
|
|
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
if (o?.foo !== value) {
|
|
>o?.foo !== value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : unknown
|
|
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
if (o?.foo == value) {
|
|
>o?.foo == value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : unknown
|
|
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
if (o?.foo != value) {
|
|
>o?.foo != value : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>value : unknown
|
|
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
}
|
|
}
|
|
|
|
function f16(o: Thing | undefined) {
|
|
>f16 : (o: Thing | undefined) => void
|
|
>o : Thing | undefined
|
|
|
|
if (o?.foo === undefined) {
|
|
>o?.foo === undefined : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>undefined : undefined
|
|
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
}
|
|
else {
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (o?.foo !== undefined) {
|
|
>o?.foo !== undefined : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>undefined : undefined
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
}
|
|
if (o?.foo == undefined) {
|
|
>o?.foo == undefined : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>undefined : undefined
|
|
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
}
|
|
else {
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (o?.foo != undefined) {
|
|
>o?.foo != undefined : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>undefined : undefined
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
}
|
|
}
|
|
|
|
function f20(o: Thing | undefined) {
|
|
>f20 : (o: Thing | undefined) => void
|
|
>o : Thing | undefined
|
|
|
|
if (typeof o?.foo === "number") {
|
|
>typeof o?.foo === "number" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>"number" : "number"
|
|
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
if (typeof o?.["foo"] === "number") {
|
|
>typeof o?.["foo"] === "number" : boolean
|
|
>typeof o?.["foo"] : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | undefined
|
|
>"foo" : "foo"
|
|
>"number" : "number"
|
|
|
|
o["foo"];
|
|
>o["foo"] : number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (typeof o?.bar() === "number") {
|
|
>typeof o?.bar() === "number" : boolean
|
|
>typeof o?.bar() : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | undefined
|
|
>bar : (() => number) | undefined
|
|
>"number" : "number"
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
if (o?.baz instanceof Error) {
|
|
>o?.baz instanceof Error : boolean
|
|
>o?.baz : object | undefined
|
|
>o : Thing | undefined
|
|
>baz : object | undefined
|
|
>Error : ErrorConstructor
|
|
|
|
o.baz;
|
|
>o.baz : Error
|
|
>o : Thing
|
|
>baz : Error
|
|
}
|
|
}
|
|
|
|
function f21(o: Thing | null) {
|
|
>f21 : (o: Thing | null) => void
|
|
>o : Thing | null
|
|
>null : null
|
|
|
|
if (typeof o?.foo === "number") {
|
|
>typeof o?.foo === "number" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | null
|
|
>foo : string | number | undefined
|
|
>"number" : "number"
|
|
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
if (typeof o?.["foo"] === "number") {
|
|
>typeof o?.["foo"] === "number" : boolean
|
|
>typeof o?.["foo"] : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.["foo"] : string | number | undefined
|
|
>o : Thing | null
|
|
>"foo" : "foo"
|
|
>"number" : "number"
|
|
|
|
o["foo"];
|
|
>o["foo"] : number
|
|
>o : Thing
|
|
>"foo" : "foo"
|
|
}
|
|
if (typeof o?.bar() === "number") {
|
|
>typeof o?.bar() === "number" : boolean
|
|
>typeof o?.bar() : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.bar() : number | undefined
|
|
>o?.bar : (() => number) | undefined
|
|
>o : Thing | null
|
|
>bar : (() => number) | undefined
|
|
>"number" : "number"
|
|
|
|
o.bar;
|
|
>o.bar : () => number
|
|
>o : Thing
|
|
>bar : () => number
|
|
}
|
|
if (o?.baz instanceof Error) {
|
|
>o?.baz instanceof Error : boolean
|
|
>o?.baz : object | undefined
|
|
>o : Thing | null
|
|
>baz : object | undefined
|
|
>Error : ErrorConstructor
|
|
|
|
o.baz;
|
|
>o.baz : Error
|
|
>o : Thing
|
|
>baz : Error
|
|
}
|
|
}
|
|
|
|
function f22(o: Thing | undefined) {
|
|
>f22 : (o: Thing | undefined) => void
|
|
>o : Thing | undefined
|
|
|
|
if (typeof o?.foo === "number") {
|
|
>typeof o?.foo === "number" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>"number" : "number"
|
|
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : string
|
|
>o : Thing | undefined
|
|
>foo : string
|
|
}
|
|
if (typeof o?.foo !== "number") {
|
|
>typeof o?.foo !== "number" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>"number" : "number"
|
|
|
|
o.foo; // Error
|
|
>o.foo : string
|
|
>o : Thing | undefined
|
|
>foo : string
|
|
}
|
|
else {
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
if (typeof o?.foo == "number") {
|
|
>typeof o?.foo == "number" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>"number" : "number"
|
|
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : string
|
|
>o : Thing | undefined
|
|
>foo : string
|
|
}
|
|
if (typeof o?.foo != "number") {
|
|
>typeof o?.foo != "number" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>"number" : "number"
|
|
|
|
o.foo; // Error
|
|
>o.foo : string
|
|
>o : Thing | undefined
|
|
>foo : string
|
|
}
|
|
else {
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
}
|
|
|
|
function f23(o: Thing | undefined) {
|
|
>f23 : (o: Thing | undefined) => void
|
|
>o : Thing | undefined
|
|
|
|
if (typeof o?.foo === "undefined") {
|
|
>typeof o?.foo === "undefined" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>"undefined" : "undefined"
|
|
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
}
|
|
else {
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (typeof o?.foo !== "undefined") {
|
|
>typeof o?.foo !== "undefined" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>"undefined" : "undefined"
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
}
|
|
if (typeof o?.foo == "undefined") {
|
|
>typeof o?.foo == "undefined" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>"undefined" : "undefined"
|
|
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
}
|
|
else {
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (typeof o?.foo != "undefined") {
|
|
>typeof o?.foo != "undefined" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>"undefined" : "undefined"
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
else {
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
}
|
|
}
|
|
|
|
declare function assert(x: unknown): asserts x;
|
|
>assert : (x: unknown) => asserts x
|
|
>x : unknown
|
|
|
|
declare function assertNonNull<T>(x: T): asserts x is NonNullable<T>;
|
|
>assertNonNull : <T>(x: T) => asserts x is NonNullable<T>
|
|
>x : T
|
|
|
|
function f30(o: Thing | undefined) {
|
|
>f30 : (o: Thing | undefined) => void
|
|
>o : Thing | undefined
|
|
|
|
if (!!true) {
|
|
>!!true : true
|
|
>!true : false
|
|
>true : true
|
|
|
|
assert(o?.foo);
|
|
>assert(o?.foo) : void
|
|
>assert : (x: unknown) => asserts x
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
if (!!true) {
|
|
>!!true : true
|
|
>!true : false
|
|
>true : true
|
|
|
|
assert(o?.foo === 42);
|
|
>assert(o?.foo === 42) : void
|
|
>assert : (x: unknown) => asserts x
|
|
>o?.foo === 42 : boolean
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>42 : 42
|
|
|
|
o.foo;
|
|
>o.foo : 42
|
|
>o : Thing
|
|
>foo : 42
|
|
}
|
|
if (!!true) {
|
|
>!!true : true
|
|
>!true : false
|
|
>true : true
|
|
|
|
assert(typeof o?.foo === "number");
|
|
>assert(typeof o?.foo === "number") : void
|
|
>assert : (x: unknown) => asserts x
|
|
>typeof o?.foo === "number" : boolean
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
>"number" : "number"
|
|
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
}
|
|
if (!!true) {
|
|
>!!true : true
|
|
>!true : false
|
|
>true : true
|
|
|
|
assertNonNull(o?.foo);
|
|
>assertNonNull(o?.foo) : void
|
|
>assertNonNull : <T>(x: T) => asserts x is NonNullable<T>
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
|
|
o.foo;
|
|
>o.foo : string | number
|
|
>o : Thing
|
|
>foo : string | number
|
|
}
|
|
}
|
|
|
|
function f40(o: Thing | undefined) {
|
|
>f40 : (o: Thing | undefined) => void
|
|
>o : Thing | undefined
|
|
|
|
switch (o?.foo) {
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
|
|
case "abc":
|
|
>"abc" : "abc"
|
|
|
|
o.foo;
|
|
>o.foo : "abc"
|
|
>o : Thing
|
|
>foo : "abc"
|
|
|
|
break;
|
|
case 42:
|
|
>42 : 42
|
|
|
|
o.foo;
|
|
>o.foo : 42
|
|
>o : Thing
|
|
>foo : 42
|
|
|
|
break;
|
|
case undefined:
|
|
>undefined : undefined
|
|
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
|
|
break;
|
|
default:
|
|
o.foo; // Error
|
|
>o.foo : string | number
|
|
>o : Thing | undefined
|
|
>foo : string | number
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
function f41(o: Thing | undefined) {
|
|
>f41 : (o: Thing | undefined) => void
|
|
>o : Thing | undefined
|
|
|
|
switch (typeof o?.foo) {
|
|
>typeof o?.foo : "string" | "number" | "bigint" | "boolean" | "symbol" | "undefined" | "object" | "function"
|
|
>o?.foo : string | number | undefined
|
|
>o : Thing | undefined
|
|
>foo : string | number | undefined
|
|
|
|
case "string":
|
|
>"string" : "string"
|
|
|
|
o.foo;
|
|
>o.foo : string
|
|
>o : Thing
|
|
>foo : string
|
|
|
|
break;
|
|
case "number":
|
|
>"number" : "number"
|
|
|
|
o.foo;
|
|
>o.foo : number
|
|
>o : Thing
|
|
>foo : number
|
|
|
|
break;
|
|
case "undefined":
|
|
>"undefined" : "undefined"
|
|
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
|
|
break;
|
|
default:
|
|
o.foo; // Error
|
|
>o.foo : never
|
|
>o : Thing | undefined
|
|
>foo : never
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Repros from #34570
|
|
|
|
type Shape =
|
|
>Shape : Shape
|
|
|
|
| { type: 'rectangle', width: number, height: number }
|
|
>type : "rectangle"
|
|
>width : number
|
|
>height : number
|
|
|
|
| { type: 'circle', radius: number }
|
|
>type : "circle"
|
|
>radius : number
|
|
|
|
function getArea(shape?: Shape) {
|
|
>getArea : (shape?: Shape | undefined) => number
|
|
>shape : Shape | undefined
|
|
|
|
switch (shape?.type) {
|
|
>shape?.type : "rectangle" | "circle" | undefined
|
|
>shape : Shape | undefined
|
|
>type : "rectangle" | "circle" | undefined
|
|
|
|
case 'circle':
|
|
>'circle' : "circle"
|
|
|
|
return Math.PI * shape.radius ** 2
|
|
>Math.PI * shape.radius ** 2 : number
|
|
>Math.PI : number
|
|
>Math : Math
|
|
>PI : number
|
|
>shape.radius ** 2 : number
|
|
>shape.radius : number
|
|
>shape : { type: "circle"; radius: number; }
|
|
>radius : number
|
|
>2 : 2
|
|
|
|
case 'rectangle':
|
|
>'rectangle' : "rectangle"
|
|
|
|
return shape.width * shape.height
|
|
>shape.width * shape.height : number
|
|
>shape.width : number
|
|
>shape : { type: "rectangle"; width: number; height: number; }
|
|
>width : number
|
|
>shape.height : number
|
|
>shape : { type: "rectangle"; width: number; height: number; }
|
|
>height : number
|
|
|
|
default:
|
|
return 0
|
|
>0 : 0
|
|
}
|
|
}
|
|
|
|
type Feature = {
|
|
>Feature : Feature
|
|
|
|
id: string;
|
|
>id : string
|
|
|
|
geometry?: {
|
|
>geometry : { type: string; coordinates: number[]; } | undefined
|
|
|
|
type: string;
|
|
>type : string
|
|
|
|
coordinates: number[];
|
|
>coordinates : number[]
|
|
|
|
};
|
|
};
|
|
|
|
|
|
function extractCoordinates(f: Feature): number[] {
|
|
>extractCoordinates : (f: Feature) => number[]
|
|
>f : Feature
|
|
|
|
if (f.geometry?.type !== 'test') {
|
|
>f.geometry?.type !== 'test' : boolean
|
|
>f.geometry?.type : string | undefined
|
|
>f.geometry : { type: string; coordinates: number[]; } | undefined
|
|
>f : Feature
|
|
>geometry : { type: string; coordinates: number[]; } | undefined
|
|
>type : string | undefined
|
|
>'test' : "test"
|
|
|
|
return [];
|
|
>[] : never[]
|
|
}
|
|
return f.geometry.coordinates;
|
|
>f.geometry.coordinates : number[]
|
|
>f.geometry : { type: string; coordinates: number[]; }
|
|
>f : Feature
|
|
>geometry : { type: string; coordinates: number[]; }
|
|
>coordinates : number[]
|
|
}
|
|
|
|
// Repro from #35842
|
|
|
|
interface SomeObject {
|
|
someProperty: unknown;
|
|
>someProperty : unknown
|
|
}
|
|
|
|
let lastSomeProperty: unknown | undefined;
|
|
>lastSomeProperty : unknown
|
|
|
|
function someFunction(someOptionalObject: SomeObject | undefined): void {
|
|
>someFunction : (someOptionalObject: SomeObject | undefined) => void
|
|
>someOptionalObject : SomeObject | undefined
|
|
|
|
if (someOptionalObject?.someProperty !== lastSomeProperty) {
|
|
>someOptionalObject?.someProperty !== lastSomeProperty : boolean
|
|
>someOptionalObject?.someProperty : unknown
|
|
>someOptionalObject : SomeObject | undefined
|
|
>someProperty : unknown
|
|
>lastSomeProperty : unknown
|
|
|
|
console.log(someOptionalObject);
|
|
>console.log(someOptionalObject) : void
|
|
>console.log : (...data: any[]) => void
|
|
>console : Console
|
|
>log : (...data: any[]) => void
|
|
>someOptionalObject : SomeObject | undefined
|
|
|
|
console.log(someOptionalObject.someProperty); // Error
|
|
>console.log(someOptionalObject.someProperty) : void
|
|
>console.log : (...data: any[]) => void
|
|
>console : Console
|
|
>log : (...data: any[]) => void
|
|
>someOptionalObject.someProperty : unknown
|
|
>someOptionalObject : SomeObject | undefined
|
|
>someProperty : unknown
|
|
|
|
lastSomeProperty = someOptionalObject?.someProperty;
|
|
>lastSomeProperty = someOptionalObject?.someProperty : unknown
|
|
>lastSomeProperty : unknown
|
|
>someOptionalObject?.someProperty : unknown
|
|
>someOptionalObject : SomeObject | undefined
|
|
>someProperty : unknown
|
|
}
|
|
}
|
|
|
|
const someObject: SomeObject = {
|
|
>someObject : SomeObject
|
|
>{ someProperty: 42} : { someProperty: number; }
|
|
|
|
someProperty: 42
|
|
>someProperty : number
|
|
>42 : 42
|
|
|
|
};
|
|
|
|
someFunction(someObject);
|
|
>someFunction(someObject) : void
|
|
>someFunction : (someOptionalObject: SomeObject | undefined) => void
|
|
>someObject : SomeObject
|
|
|
|
someFunction(undefined);
|
|
>someFunction(undefined) : void
|
|
>someFunction : (someOptionalObject: SomeObject | undefined) => void
|
|
>undefined : undefined
|
|
|
|
// Repro from #35970
|
|
|
|
let i = 0;
|
|
>i : number
|
|
>0 : 0
|
|
|
|
declare const arr: { tag: ("left" | "right") }[];
|
|
>arr : { tag: ("left" | "right"); }[]
|
|
>tag : "left" | "right"
|
|
|
|
while (arr[i]?.tag === "left") {
|
|
>arr[i]?.tag === "left" : boolean
|
|
>arr[i]?.tag : "left" | "right"
|
|
>arr[i] : { tag: "left" | "right"; }
|
|
>arr : { tag: "left" | "right"; }[]
|
|
>i : number
|
|
>tag : "left" | "right"
|
|
>"left" : "left"
|
|
|
|
i += 1;
|
|
>i += 1 : number
|
|
>i : number
|
|
>1 : 1
|
|
|
|
if (arr[i]?.tag === "right") {
|
|
>arr[i]?.tag === "right" : boolean
|
|
>arr[i]?.tag : "left" | "right"
|
|
>arr[i] : { tag: "left" | "right"; }
|
|
>arr : { tag: "left" | "right"; }[]
|
|
>i : number
|
|
>tag : "left" | "right"
|
|
>"right" : "right"
|
|
|
|
console.log("I should ALSO be reachable");
|
|
>console.log("I should ALSO be reachable") : void
|
|
>console.log : (...data: any[]) => void
|
|
>console : Console
|
|
>log : (...data: any[]) => void
|
|
>"I should ALSO be reachable" : "I should ALSO be reachable"
|
|
}
|
|
}
|
|
|