osm2geojson-ultra/dist/osm-object.js

a faster & more complete OSM & Overpass (either in xml or in json formats) to geojson convertor - 4x faster than xmldom + osmtogeojson in most situations - implemented in TypeScript with txml for XML parsing

export class OsmObject {
    constructor(type, id, refElems) {
        this.type = type;
        this.id = id;
        this.refElems = refElems;
        this.tags = {};
        this.meta = {};
        this.refCount = 0;
        this.hasTag = false;
        if (refElems) {
            refElems.add(this.getCompositeId(), this);
        }
    }
    addTags(tags) {
        this.tags = Object.assign(this.tags, tags);
        this.hasTag = true;
    }
    addTag(k, v) {
        this.tags[k] = v;
        this.hasTag = true;
    }
    addMeta(k, v) {
        this.meta[k] = v;
    }
    addMetas(meta) {
        this.meta = Object.assign(this.meta, meta);
    }
    getCompositeId() {
        return `${this.type}/${this.id}`;
    }
    getProps() {
        return {
            "@id": this.id,
            "@type": this.type,
            ...Object.fromEntries(Object.entries(this.meta).map(([k, v]) => ["@" + k, v])),
            ...Object.fromEntries(Object.entries(this.tags).map(([k, v]) => [
                k.startsWith("@") ? "@" + k : k,
                v,
            ])),
        };
    }
}