/**
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* Resolves the given DNS hostname into an IP address, and returns it in the dot
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* separated format as a string.
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*
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* Example:
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*
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* ``` js
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* dnsResolve("home.netscape.com")
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* // returns the string "198.95.249.79".
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* ```
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*
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* @param {String} host hostname to resolve
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* @return {String} resolved IP address
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*/
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export default function dnsResolve(host: string): Promise<string | null>;
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