43 lines
1.0 KiB
JavaScript
43 lines
1.0 KiB
JavaScript
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export class IpNotFoundError extends Error {
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constructor(options) {
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super('Could not get the public IP address', options);
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this.name = 'IpNotFoundError';
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}
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}
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export function createPublicIp(publicIpv4, publicIpv6) {
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return function publicIp(options) { // eslint-disable-line func-names
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const ipv4Promise = publicIpv4(options);
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const ipv6Promise = publicIpv6(options);
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const promise = (async () => {
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try {
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const ipv6 = await ipv6Promise;
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// eslint-disable-next-line promise/prefer-await-to-then
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ipv4Promise.catch(() => {}); // Don't throw when cancelling
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ipv4Promise.cancel();
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return ipv6;
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} catch (ipv6Error) {
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if (!(ipv6Error instanceof IpNotFoundError)) {
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throw ipv6Error;
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}
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try {
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return await ipv4Promise;
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} catch (ipv4Error) {
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throw new AggregateError([ipv4Error, ipv6Error]); // eslint-disable-line unicorn/error-message
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}
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}
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})();
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promise.cancel = () => {
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ipv4Promise.cancel();
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ipv6Promise.cancel();
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};
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return promise;
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};
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}
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