45 lines
1.2 KiB
JavaScript
45 lines
1.2 KiB
JavaScript
import {createRequire} from 'node:module'
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const require = createRequire(import.meta.url)
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import {statSync} from 'node:fs'
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import _dbStations from 'db-stations'
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const {full: readRawStations} = _dbStations
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// We don't have access to the publish date+time of the npm package,
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// so we use the ctime of db-stations/full.ndjson as an approximation.
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// Also require() doesn't make much sense in ES Modules.
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// todo: this is brittle, find a better way, e.g. a build script
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const timeModified = statSync(require.resolve('db-stations/full.ndjson')).ctime
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const pStations = new Promise((resolve, reject) => {
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let raw = readRawStations()
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raw.once('error', reject)
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let data = Object.create(null)
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raw.on('data', (station) => {
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data[station.id] = station
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if (Array.isArray(station.ril100Identifiers)) {
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for (const ril100 of station.ril100Identifiers) {
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data[ril100.rilIdentifier] = station
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}
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}
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if (Array.isArray(station.additionalIds)) {
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for (const addId of station.additionalIds) {
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data[addId] = station
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}
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}
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})
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raw.once('end', () => {
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raw = null
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resolve({data, timeModified})
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})
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})
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pStations.catch((err) => {
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console.error(err)
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process.exit(1) // todo: is this appropriate?
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})
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export {
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pStations,
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}
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