TypeScript/tests/baselines/reference/typeGuardsInGlobal.types
Sheetal Nandi 2fecc132ab Tests for typeguards allowed on variables and parameters only
From spec:
Note that type guards affect types of variables and parameters only and have no effect on members of objects such as properties
2014-11-06 13:04:27 -08:00

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=== tests/cases/conformance/expressions/typeGuards/typeGuardsInGlobal.ts ===
// Note that type guards affect types of variables and parameters only and
// have no effect on members of objects such as properties.
// variables in global
var num: number;
>num : number
var var1: string | number;
>var1 : string | number
if (typeof var1 === "string") {
>typeof var1 === "string" : boolean
>typeof var1 : string
>var1 : string | number
num = var1.length; // string
>num = var1.length : number
>num : number
>var1.length : number
>var1 : string
>length : number
}
else {
num = var1; // number
>num = var1 : number
>num : number
>var1 : number
}