hk-bus-eta-skpracta/esm/ctb.js

Query the ETA (Estimated Time of Arrival) of HK Bus/Minibus/MTR/Lightrail (skpracta flavored)

import { isSafari } from "./utils";
export default function fetchEtas({ stopId, route, bound, seq, }) {
    return fetch(`https://rt.data.gov.hk//v2/transport/citybus/eta/CTB/${stopId}/${route}`, {
        cache: isSafari ? "default" : "no-store",
    })
        .then((response) => response.json())
        .then(({ data }) => data
        .filter((eta) => eta.eta && bound.includes(eta.dir))
        // filter the eta by the stop sequence information
        // as the route data may not 100% match
        // use the nearest seq
        .sort((a, b) => Math.abs(a.seq - seq) < Math.abs(b.seq - seq) ? -1 : 1)
        .filter((eta, _, self) => eta.seq === self[0].seq)
        .map((e) => ({
        eta: e.eta,
        remark: {
            zh: e.rmk_tc,
            en: e.rmk_en,
        },
        dest: {
            zh: e.dest_tc,
            en: e.dest_en,
        },
        co: "ctb",
    })));
}
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