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=== tests/cases/conformance/types/typeRelationships/assignmentCompatibility/typeParameterAssignability2.ts ===
// type parameters are not assignable to one another unless directly or indirectly constrained to one another
function foo<T, U extends T>(t: T, u: U) {
>foo : Symbol(foo, Decl(typeParameterAssignability2.ts, 0, 0))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 2, 13))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 2, 15))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 2, 13))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 2, 29))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 2, 13))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 2, 34))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 2, 15))
t = u; // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 2, 29))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 2, 34))
u = t; // ok
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 2, 34))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 2, 29))
}
function foo2<T extends U, U>(t: T, u: U) {
>foo2 : Symbol(foo2, Decl(typeParameterAssignability2.ts, 5, 1))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 7, 14))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 7, 26))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 7, 26))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 7, 30))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 7, 14))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 7, 35))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 7, 26))
t = u; // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 7, 30))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 7, 35))
u = t; // ok
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 7, 35))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 7, 30))
}
function foo3<T extends U, U extends V, V>(t: T, u: U, v: V) {
>foo3 : Symbol(foo3, Decl(typeParameterAssignability2.ts, 10, 1))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 12, 14))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 12, 26))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 12, 26))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 12, 39))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 12, 39))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 12, 43))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 12, 14))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 12, 48))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 12, 26))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 12, 54))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 12, 39))
t = u; // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 12, 43))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 12, 48))
u = t;
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 12, 48))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 12, 43))
t = v; // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 12, 43))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 12, 54))
v = t; // ok
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 12, 54))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 12, 43))
u = v; // error
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 12, 48))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 12, 54))
v = u; // ok
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 12, 54))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 12, 48))
}
function foo4<T extends U, U extends V, V extends Date>(t: T, u: U, v: V) {
>foo4 : Symbol(foo4, Decl(typeParameterAssignability2.ts, 21, 1))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 23, 14))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 23, 26))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 23, 26))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 23, 39))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 23, 39))
>Date : Symbol(Date, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.scripthost.d.ts, --, --))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 23, 56))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 23, 14))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 23, 61))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 23, 26))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 23, 67))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 23, 39))
t = u; // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 23, 56))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 23, 61))
t = v; // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 23, 56))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 23, 67))
t = new Date(); // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 23, 56))
>Date : Symbol(Date, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.scripthost.d.ts, --, --))
u = t;
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 23, 61))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 23, 56))
u = v; // error
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 23, 61))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 23, 67))
u = new Date(); // error
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 23, 61))
>Date : Symbol(Date, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.scripthost.d.ts, --, --))
v = t;
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 23, 67))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 23, 56))
v = u;
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 23, 67))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 23, 61))
v = new Date(); // ok
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 23, 67))
>Date : Symbol(Date, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.scripthost.d.ts, --, --))
var d: Date;
>d : Symbol(d, Decl(typeParameterAssignability2.ts, 36, 7))
>Date : Symbol(Date, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.scripthost.d.ts, --, --))
d = t; // ok
>d : Symbol(d, Decl(typeParameterAssignability2.ts, 36, 7))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 23, 56))
d = u; // ok
>d : Symbol(d, Decl(typeParameterAssignability2.ts, 36, 7))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 23, 61))
d = v; // ok
>d : Symbol(d, Decl(typeParameterAssignability2.ts, 36, 7))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 23, 67))
}
// same as foo4 with different type parameter ordering
function foo5<V extends Date, U extends V, T extends U>(t: T, u: U, v: V) {
>foo5 : Symbol(foo5, Decl(typeParameterAssignability2.ts, 40, 1))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 43, 14))
>Date : Symbol(Date, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.scripthost.d.ts, --, --))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 43, 29))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 43, 14))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 43, 42))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 43, 29))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 43, 56))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 43, 42))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 43, 61))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 43, 29))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 43, 67))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 43, 14))
t = u; // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 43, 56))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 43, 61))
t = v; // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 43, 56))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 43, 67))
t = new Date(); // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 43, 56))
>Date : Symbol(Date, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.scripthost.d.ts, --, --))
u = t;
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 43, 61))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 43, 56))
u = v; // error
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 43, 61))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 43, 67))
u = new Date(); // error
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 43, 61))
>Date : Symbol(Date, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.scripthost.d.ts, --, --))
v = t;
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 43, 67))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 43, 56))
v = u;
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 43, 67))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 43, 61))
v = new Date(); // ok
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 43, 67))
>Date : Symbol(Date, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.scripthost.d.ts, --, --))
var d: Date;
>d : Symbol(d, Decl(typeParameterAssignability2.ts, 56, 7))
>Date : Symbol(Date, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.scripthost.d.ts, --, --))
d = t; // ok
>d : Symbol(d, Decl(typeParameterAssignability2.ts, 56, 7))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 43, 56))
d = u; // ok
>d : Symbol(d, Decl(typeParameterAssignability2.ts, 56, 7))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 43, 61))
d = v; // ok
>d : Symbol(d, Decl(typeParameterAssignability2.ts, 56, 7))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 43, 67))
}
function foo6<T extends U, U, V>(t: T, u: U, v: V) {
>foo6 : Symbol(foo6, Decl(typeParameterAssignability2.ts, 60, 1))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 62, 14))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 62, 26))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 62, 26))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 62, 29))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 62, 33))
>T : Symbol(T, Decl(typeParameterAssignability2.ts, 62, 14))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 62, 38))
>U : Symbol(U, Decl(typeParameterAssignability2.ts, 62, 26))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 62, 44))
>V : Symbol(V, Decl(typeParameterAssignability2.ts, 62, 29))
t = u; // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 62, 33))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 62, 38))
t = v; // error
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 62, 33))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 62, 44))
u = t; // ok
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 62, 38))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 62, 33))
u = v; // error
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 62, 38))
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 62, 44))
v = t; // error
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 62, 44))
>t : Symbol(t, Decl(typeParameterAssignability2.ts, 62, 33))
v = u; // error
>v : Symbol(v, Decl(typeParameterAssignability2.ts, 62, 44))
>u : Symbol(u, Decl(typeParameterAssignability2.ts, 62, 38))
}
|
