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30 lines
596 B
30 lines
596 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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function isZeitWorld(ns) {
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return ns.length > 1 &&
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ns.every(host => {
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return nameservers.has(host);
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});
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}
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module.exports = isZeitWorld;
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