File: hidingIndexSignatures.ts

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node-typescript 4.9.5%2Bds1-2
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interface A {
    [a: string]: {};
}

interface B extends A {
    [a: string]: number; // Number is not a subtype of string.  Should error.
}

var b: B;
b[""]; // Should be number
var a: A;
a[""]; // Should be {}