add temporary work-around for GH-2235

plugins/org.eclipse.n4js/src/org/eclipse/n4js/validation/utils/MemberCube.java

@@ -16,6 +16,9 @@
 import java.util.Map.Entry;
 import java.util.Set;
 
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.ecore.resource.Resource;
+import org.eclipse.n4js.resource.N4JSResource;
 import org.eclipse.n4js.ts.types.TClass;
 import org.eclipse.n4js.ts.types.TClassifier;
 import org.eclipse.n4js.ts.types.TMember;
@@ -49,6 +52,7 @@ public MemberCube(TClassifier tClassifier, MemberCollector memberCollector) {
 
 	private void addMembers(int source, List<TMember> members) {
 		for (TMember member : members) {
+			ensureResolution(member);
 			NameStaticPair nsp = NameStaticPair.of(member);
 			MemberMatrix memberMatrix = memberMatrixesByName.get(nsp);
 			if (memberMatrix == null) {
@@ -59,6 +63,24 @@ private void addMembers(int source, List<TMember> members) {
 		}
 	}
 
+	/**
+	 * TEMPORARY WORK-AROUND
+	 *
+	 * This is required to avoid exceptions when compiling n4js-libs.
+	 *
+	 * TODO GH-2235 find a better place to ensure resolution of polyfilled members
+	 */
+	private void ensureResolution(EObject obj) {
+		// ensure we do not use types from resources that are only partially resolved
+		Resource polyfillResource = obj.eResource();
+		if (polyfillResource instanceof N4JSResource) {
+			// Note: the following call will be a no-op if
+			// 1) the resource was already post-processed, or
+			// 2) the resource was loaded from the index.
+			((N4JSResource) polyfillResource).performPostProcessing();
+		}
+	}
+
 	/**
 	 * @see java.util.Map#entrySet()
 	 */