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=== tests/cases/compiler/numericIndexerConstraint1.ts ===
class Foo { foo() { } }
>Foo : Symbol(Foo, Decl(numericIndexerConstraint1.ts, 0, 0))
>foo : Symbol(Foo.foo, Decl(numericIndexerConstraint1.ts, 0, 11))
var x: { [index: string]: number; };
>x : Symbol(x, Decl(numericIndexerConstraint1.ts, 1, 3))
>index : Symbol(index, Decl(numericIndexerConstraint1.ts, 1, 10))
var result: Foo = x["one"]; // error
>result : Symbol(result, Decl(numericIndexerConstraint1.ts, 2, 3))
>Foo : Symbol(Foo, Decl(numericIndexerConstraint1.ts, 0, 0))
>x : Symbol(x, Decl(numericIndexerConstraint1.ts, 1, 3))
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