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=== tests/cases/conformance/types/thisType/looseThisTypeInFunctions.ts ===
interface I {
n: number;
>n : number
explicitThis(this: this, m: number): number;
>explicitThis : (this: this, m: number) => number
>this : this
>m : number
}
interface Unused {
implicitNoThis(m: number): number;
>implicitNoThis : (m: number) => number
>m : number
}
class C implements I {
>C : C
n: number;
>n : number
explicitThis(this: this, m: number): number {
>explicitThis : (this: this, m: number) => number
>this : this
>m : number
return this.n + m;
>this.n + m : number
>this.n : number
>this : this
>n : number
>m : number
}
implicitThis(m: number): number {
>implicitThis : (m: number) => number
>m : number
return this.n + m;
>this.n + m : number
>this.n : number
>this : this
>n : number
>m : number
}
explicitVoid(this: void, m: number): number {
>explicitVoid : (this: void, m: number) => number
>this : void
>m : number
return m + 1;
>m + 1 : number
>m : number
>1 : 1
}
}
let c = new C();
>c : C
>new C() : C
>C : typeof C
c.explicitVoid = c.explicitThis; // error, 'void' is missing everything
>c.explicitVoid = c.explicitThis : (this: C, m: number) => number
>c.explicitVoid : (this: void, m: number) => number
>c : C
>explicitVoid : (this: void, m: number) => number
>c.explicitThis : (this: C, m: number) => number
>c : C
>explicitThis : (this: C, m: number) => number
let o = {
>o : { n: number; explicitThis: (m: number) => any; implicitThis(m: number): number; }
>{ n: 101, explicitThis: function (m: number) { return m + this.n.length; // error, 'length' does not exist on 'number' }, implicitThis(m: number): number { return m; }} : { n: number; explicitThis: (m: number) => any; implicitThis(m: number): number; }
n: 101,
>n : number
>101 : 101
explicitThis: function (m: number) {
>explicitThis : (m: number) => any
>function (m: number) { return m + this.n.length; // error, 'length' does not exist on 'number' } : (m: number) => any
>m : number
return m + this.n.length; // error, 'length' does not exist on 'number'
>m + this.n.length : any
>m : number
>this.n.length : any
>this.n : number
>this : { n: number; explicitThis: (m: number) => any; implicitThis(m: number): number; }
>n : number
>length : any
},
implicitThis(m: number): number { return m; }
>implicitThis : (m: number) => number
>m : number
>m : number
};
let i: I = o;
>i : I
>o : { n: number; explicitThis: (m: number) => any; implicitThis(m: number): number; }
let o2: I = {
>o2 : I
>{ n: 1001, explicitThis: function (m) { return m + this.n.length; // error, this.n: number, no member 'length' },} : { n: number; explicitThis: (this: I, m: number) => any; }
n: 1001,
>n : number
>1001 : 1001
explicitThis: function (m) {
>explicitThis : (this: I, m: number) => any
>function (m) { return m + this.n.length; // error, this.n: number, no member 'length' } : (this: I, m: number) => any
>m : number
return m + this.n.length; // error, this.n: number, no member 'length'
>m + this.n.length : any
>m : number
>this.n.length : any
>this.n : number
>this : I
>n : number
>length : any
},
}
let x = i.explicitThis;
>x : (this: I, m: number) => number
>i.explicitThis : (this: I, m: number) => number
>i : I
>explicitThis : (this: I, m: number) => number
let n = x(12); // callee:void doesn't match this:I
>n : number
>x(12) : number
>x : (this: I, m: number) => number
>12 : 12
let u: Unused;
>u : Unused
let y = u.implicitNoThis;
>y : (m: number) => number
>u.implicitNoThis : (m: number) => number
>u : Unused
>implicitNoThis : (m: number) => number
n = y(12); // ok, callee:void matches this:any
>n = y(12) : number
>n : number
>y(12) : number
>y : (m: number) => number
>12 : 12
c.explicitVoid = c.implicitThis // ok, implicitThis(this:any)
>c.explicitVoid = c.implicitThis : (m: number) => number
>c.explicitVoid : (this: void, m: number) => number
>c : C
>explicitVoid : (this: void, m: number) => number
>c.implicitThis : (m: number) => number
>c : C
>implicitThis : (m: number) => number
o.implicitThis = c.implicitThis; // ok, implicitThis(this:any)
>o.implicitThis = c.implicitThis : (m: number) => number
>o.implicitThis : (m: number) => number
>o : { n: number; explicitThis: (m: number) => any; implicitThis(m: number): number; }
>implicitThis : (m: number) => number
>c.implicitThis : (m: number) => number
>c : C
>implicitThis : (m: number) => number
o.implicitThis = c.explicitThis; // ok, implicitThis(this:any) is assignable to explicitThis(this: this)
>o.implicitThis = c.explicitThis : (this: C, m: number) => number
>o.implicitThis : (m: number) => number
>o : { n: number; explicitThis: (m: number) => any; implicitThis(m: number): number; }
>implicitThis : (m: number) => number
>c.explicitThis : (this: C, m: number) => number
>c : C
>explicitThis : (this: C, m: number) => number
o.implicitThis = i.explicitThis;
>o.implicitThis = i.explicitThis : (this: I, m: number) => number
>o.implicitThis : (m: number) => number
>o : { n: number; explicitThis: (m: number) => any; implicitThis(m: number): number; }
>implicitThis : (m: number) => number
>i.explicitThis : (this: I, m: number) => number
>i : I
>explicitThis : (this: I, m: number) => number
i.explicitThis = function(m) {
>i.explicitThis = function(m) { return this.n.length; // error, this.n: number} : (this: I, m: number) => any
>i.explicitThis : (this: I, m: number) => number
>i : I
>explicitThis : (this: I, m: number) => number
>function(m) { return this.n.length; // error, this.n: number} : (this: I, m: number) => any
>m : number
return this.n.length; // error, this.n: number
>this.n.length : any
>this.n : number
>this : I
>n : number
>length : any
}
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