ClassCastException on primitive type deserialization

[foal]

Below simple test case which fails with java.lang.ClassCastException

/*
 * Copyright 2013 Nicolas Morel
 * Copyright 2020 Stanislav Spiridonov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.dominokit.jacksonapt.client.deser.array;

import org.dominokit.jacksonapt.JsonDeserializer;
import org.dominokit.jacksonapt.client.deser.AbstractJsonDeserializerTest;
import org.dominokit.jacksonapt.deser.array.cast.PrimitiveDoubleArrayJsonDeserializer;

/**
 * @author Stanislav Spiridonov
 */
@SuppressWarnings("nls")
public class DoubleArrayJsonDeserializerTest extends AbstractJsonDeserializerTest<double[]> {

    private static final double DELTA = 0.00000000000001;

    @Override
    protected JsonDeserializer<double[]> createDeserializer() {
        return PrimitiveDoubleArrayJsonDeserializer.getInstance();
    }

    @Override
    public void testDeserializeValue() {
        double[] orig = new double[]{-100, -0.5365623643346, 0, 0.5365623643346, 100};
        double[] deserialize = deserialize("[-100, -0.5365623643346, 0, 0.5365623643346, 100]");
        assertEquals(orig[0], deserialize[0], DELTA);
        assertEquals(orig[1], deserialize[1], DELTA);
        assertEquals(orig[2], deserialize[2], DELTA);
        assertEquals(orig[3], deserialize[3], DELTA);
        assertEquals(orig[4], deserialize[4], DELTA);
    }

    public void testDeserializeValueEmptyArray() {
        double[] deserialize = deserialize("[]");
        assertTrue(deserialize.length == 0);
    }
}

exception is

java.lang.ClassCastException
    at java.lang.Throwable.Throwable(Throwable.java:66)
    at java.lang.Exception.Exception(Exception.java:29)
    at java.lang.RuntimeException.RuntimeException(RuntimeException.java:29)
    at java.lang.ClassCastException.ClassCastException(ClassCastException.java:27)
    at javaemul.internal.InternalPreconditions.checkCriticalType(InternalPreconditions.java:154)
    at com.google.gwt.lang.Cast.castToDouble(InternalPreconditions.java:138)
    at org.dominokit.jacksonapt.deser.array.cast.BaseJsNumberArrayReader.$readNumberArray(BaseJsNumberArrayReader.java:25)
    at org.dominokit.jacksonapt.deser.array.AbstractArrayJsonDeserializer.doDeserialize(JsDoubleArrayReader.java:19)
    at org.dominokit.jacksonapt.JsonDeserializer.$deserialize(JsonDeserializer.java:57)
    at org.dominokit.jacksonapt.client.deser.array.DoubleArrayJsonDeserializerTest.testDeserializeValue(JsonDeserializer.java:40)
    at Unknown.anonymous(GWTTestMetadataImpl.java:8)
    at com.google.gwt.junit.client.impl.GWTTestAccessor.$invoke(GWTTestAccessor.java:35)
    at com.google.gwt.junit.client.impl.GWTRunner.$executeTestMethod(GWTRunner.java:226)
    at com.google.gwt.junit.client.GWTTestCase.$doRunTest(GWTTestCase.java:157)
    at com.google.gwt.junit.client.GWTTestCase.$runBare(TestCase.java:59)
    at com.google.gwt.junit.client.GWTTestCase.$__doRunTest(GWTTestCase.java:115)
    at com.google.gwt.junit.client.impl.GWTRunner.$runTest(GWTRunner.java:302)
    at com.google.gwt.junit.client.impl.GWTRunner.$doRunTest(GWTRunner.java:235)
    at com.google.gwt.junit.client.impl.GWTRunner$TestBlockListener.$onSuccess(GWTRunner.java:106)
    at com.google.gwt.junit.client.impl.GWTRunner$InitialResponseListener.$onSuccess(GWTRunner.java:61)
    at com.google.gwt.junit.client.impl.GWTRunner$InitialResponseListener.onSuccess(GWTRunner.java:59)
    at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.$onResponseReceived(RequestCallbackAdapter.java:232)
    at com.google.gwt.http.client.Request.$fireOnResponseReceived(Request.java:250)
    at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:412)
    at Unknown.anonymous(XMLHttpRequest.java:329)
    at com.google.gwt.core.client.impl.Impl.apply(Impl.java:309)
    at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:368)
    at Unknown.anonymous(Impl.java:78)

[foal]

There is PR to fix it: #48

[foal]

There are two errors:

1. The first one is in BaseJsNumberArrayReader - nextInt crash on double in the array. It may be fixed with a simple change to nextDouble, but I preferred to leave nextInt for Integer and Short readers because they provide the more understandable error message if JSON array contains wrong formated INT values.
2. The second one is related to JsArray<String>.slice() always causes ClassCastException google/elemental2#28. I am not sure that I chose the best way to convert JsArray to Java primitive array, so please check it.