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How to convert Elemental2 JsObject to Map<String, String>?

Looking for a way to convert Elemental2 JsObject to Map<String, String>:

import elemental2.core.JsObject;

public static Map<String, String> jsObjectToMap(JsObject obj) {
    // code in question
}

Is there a more efficient way that just iterating and creating a new map (I'll post that as my own answer)?

Solution

  • Using simple iteration and copying:

    import elemental2.core.JsObject;
import jsinterop.base.Js;
import jsinterop.base.JsPropertyMap;

import java.util.LinkedHashMap;
import java.util.Map;

public static Map<String, String> jsObjectToMap(JsObject obj) {
    Map<String, String> result = new LinkedHashMap<>();
    JsPropertyMap<Object> propMap = Js.asPropertyMap(obj);
    propMap.forEach(key -> {
        result.put(key, Objects.toString(propMap.get(key)));
    });
    return result;
}