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@donnut
Created February 9, 2015 10:37
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unions and type guard
interface IMessage {
name: string;
}
function itemFn(pipIn: string[]) {
return pipIn;
}
function baseFn(pipIn: string) {
return [pipIn];
}
function main(pipIn: string|string[]) {
if (pipIn instanceof Array) {
return itemFn(pipIn);
} else {
return baseFn(pipIn);
}
}
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