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9e93701c58
The major version bump is because - it no longer distributes index.js/index.mjs code bundles (which iD hasn't needed in a long time anyway) - renamed dist/features.json -> dist/featureCollection.json
105 lines
3.4 KiB
JavaScript
105 lines
3.4 KiB
JavaScript
import { json as d3_json } from 'd3-fetch';
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let _mainFileFetcher = coreFileFetcher(); // singleton
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export { _mainFileFetcher as fileFetcher };
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//
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// coreFileFetcher asynchronously fetches data from JSON files
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//
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export function coreFileFetcher() {
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let _this = {};
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let _inflight = {};
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let _fileMap = {
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'address_formats': 'data/address_formats.min.json',
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'deprecated': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/deprecated.min.json',
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'discarded': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/discarded.min.json',
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'imagery': 'data/imagery.min.json',
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'intro_graph': 'data/intro_graph.min.json',
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'keepRight': 'data/keepRight.min.json',
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'languages': 'data/languages.min.json',
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'locales': 'locales/index.min.json',
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'nsi_brands': 'https://cdn.jsdelivr.net/npm/name-suggestion-index@4/dist/brands.min.json',
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'nsi_filters': 'https://cdn.jsdelivr.net/npm/name-suggestion-index@4/dist/filters.min.json',
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'oci_features': 'https://cdn.jsdelivr.net/npm/osm-community-index@3/dist/featureCollection.min.json',
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'oci_resources': 'https://cdn.jsdelivr.net/npm/osm-community-index@3/dist/resources.min.json',
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'preset_categories': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/preset_categories.min.json',
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'preset_defaults': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/preset_defaults.min.json',
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'preset_fields': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/fields.min.json',
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'preset_presets': 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/presets.min.json',
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'phone_formats': 'data/phone_formats.min.json',
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'qa_data': 'data/qa_data.min.json',
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'shortcuts': 'data/shortcuts.min.json',
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'territory_languages': 'data/territory_languages.min.json',
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'wmf_sitematrix': 'https://cdn.jsdelivr.net/npm/wmf-sitematrix@0.1/wikipedia.min.json'
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};
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let _cachedData = {};
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// expose the cache; useful for tests
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_this.cache = () => _cachedData;
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// Returns a Promise to fetch data
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// (resolved with the data if we have it already)
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_this.get = (which) => {
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if (_cachedData[which]) {
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return Promise.resolve(_cachedData[which]);
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}
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const file = _fileMap[which];
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const url = file && _this.asset(file);
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if (!url) {
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return Promise.reject(`Unknown data file for "${which}"`);
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}
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let prom = _inflight[url];
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if (!prom) {
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_inflight[url] = prom = d3_json(url)
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.then(result => {
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delete _inflight[url];
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if (!result) {
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throw new Error(`No data loaded for "${which}"`);
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}
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_cachedData[which] = result;
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return result;
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})
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.catch(err => {
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delete _inflight[url];
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throw err;
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});
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}
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return prom;
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};
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// Accessor for the file map
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_this.fileMap = function(val) {
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if (!arguments.length) return _fileMap;
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_fileMap = val;
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return _this;
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};
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let _assetPath = '';
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_this.assetPath = function(val) {
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if (!arguments.length) return _assetPath;
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_assetPath = val;
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return _this;
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};
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let _assetMap = {};
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_this.assetMap = function(val) {
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if (!arguments.length) return _assetMap;
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_assetMap = val;
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return _this;
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};
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_this.asset = (val) => {
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if (/^http(s)?:\/\//i.test(val)) return val;
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const filename = _assetPath + val;
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return _assetMap[filename] || filename;
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};
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return _this;
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}
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