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27 lines
575 B
27 lines
575 B
/**
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* List of `zeit.world` nameservers
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*/
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const nameservers = new Set([
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'california.zeit.world',
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'london.zeit.world',
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'newark.zeit.world',
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'sydney.zeit.world',
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'iowa.zeit.world',
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'dallas.zeit.world',
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'amsterdam.zeit.world',
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'paris.zeit.world',
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'frankfurt.zeit.world',
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'singapore.zeit.world'
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]);
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/**
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* Given an array of nameservers (ie: as returned
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* by `resolveNs` from Node, assert that they're
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* zeit.world's.
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*/
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export default function isZeitWorld (ns) {
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return ns.length > 1 && ns.every((host) => {
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return nameservers.has(host);
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});
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}
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