=== tests/cases/compiler/contextualSigInstantiationRestParams.ts ===
declare function toInstantiate<A, B>(a?: A, b?: B): B;
>toInstantiate : Symbol(toInstantiate, Decl(contextualSigInstantiationRestParams.ts, 0, 0))
>A : Symbol(A, Decl(contextualSigInstantiationRestParams.ts, 0, 31))
>B : Symbol(B, Decl(contextualSigInstantiationRestParams.ts, 0, 33))
>a : Symbol(a, Decl(contextualSigInstantiationRestParams.ts, 0, 37))
>A : Symbol(A, Decl(contextualSigInstantiationRestParams.ts, 0, 31))
>b : Symbol(b, Decl(contextualSigInstantiationRestParams.ts, 0, 43))
>B : Symbol(B, Decl(contextualSigInstantiationRestParams.ts, 0, 33))
>B : Symbol(B, Decl(contextualSigInstantiationRestParams.ts, 0, 33))

declare function contextual(...s: string[]): string
>contextual : Symbol(contextual, Decl(contextualSigInstantiationRestParams.ts, 0, 54))
>s : Symbol(s, Decl(contextualSigInstantiationRestParams.ts, 1, 28))

var sig: typeof contextual = toInstantiate;
>sig : Symbol(sig, Decl(contextualSigInstantiationRestParams.ts, 3, 3))
>contextual : Symbol(contextual, Decl(contextualSigInstantiationRestParams.ts, 0, 54))
>toInstantiate : Symbol(toInstantiate, Decl(contextualSigInstantiationRestParams.ts, 0, 0))