diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrBoxJsTestGenerated.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrBoxJsTestGenerated.java
index d7334730dd3..ca11b803942 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrBoxJsTestGenerated.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrBoxJsTestGenerated.java
@@ -6745,6 +6745,39 @@ public class IrBoxJsTestGenerated extends AbstractIrBoxJsTest {
         public void testTmpInsidePrimaryConstructor() throws Exception {
             runTest("js/js.translator/testData/box/regression/tmpInsidePrimaryConstructor.kt");
         }
+
+        @TestMetadata("js/js.translator/testData/box/regression/stdlibTestSnippets")
+        @TestDataPath("$PROJECT_ROOT")
+        @RunWith(JUnit3RunnerWithInners.class)
+        public static class StdlibTestSnippets extends AbstractIrBoxJsTest {
+            private void runTest(String testDataFilePath) throws Exception {
+                KotlinTestUtils.runTest0(this::doTest, TargetBackend.JS_IR, testDataFilePath);
+            }
+
+            public void testAllFilesPresentInStdlibTestSnippets() throws Exception {
+                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("js/js.translator/testData/box/regression/stdlibTestSnippets"), Pattern.compile("^([^_](.+))\\.kt$"), TargetBackend.JS_IR, true);
+            }
+
+            @TestMetadata("arrayTest_plusInference.kt")
+            public void testArrayTest_plusInference() throws Exception {
+                runTest("js/js.translator/testData/box/regression/stdlibTestSnippets/arrayTest_plusInference.kt");
+            }
+
+            @TestMetadata("iterableChunked.kt")
+            public void testIterableChunked() throws Exception {
+                runTest("js/js.translator/testData/box/regression/stdlibTestSnippets/iterableChunked.kt");
+            }
+
+            @TestMetadata("json.kt")
+            public void testJson() throws Exception {
+                runTest("js/js.translator/testData/box/regression/stdlibTestSnippets/json.kt");
+            }
+
+            @TestMetadata("throwable.kt")
+            public void testThrowable() throws Exception {
+                runTest("js/js.translator/testData/box/regression/stdlibTestSnippets/throwable.kt");
+            }
+        }
     }
 
     @TestMetadata("js/js.translator/testData/box/reified")
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/BoxJsTestGenerated.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/BoxJsTestGenerated.java
index fbcacfa9d56..64edc48d1b1 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/BoxJsTestGenerated.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/BoxJsTestGenerated.java
@@ -6780,6 +6780,39 @@ public class BoxJsTestGenerated extends AbstractBoxJsTest {
         public void testTmpInsidePrimaryConstructor() throws Exception {
             runTest("js/js.translator/testData/box/regression/tmpInsidePrimaryConstructor.kt");
         }
+
+        @TestMetadata("js/js.translator/testData/box/regression/stdlibTestSnippets")
+        @TestDataPath("$PROJECT_ROOT")
+        @RunWith(JUnit3RunnerWithInners.class)
+        public static class StdlibTestSnippets extends AbstractBoxJsTest {
+            private void runTest(String testDataFilePath) throws Exception {
+                KotlinTestUtils.runTest0(this::doTest, TargetBackend.JS, testDataFilePath);
+            }
+
+            public void testAllFilesPresentInStdlibTestSnippets() throws Exception {
+                KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("js/js.translator/testData/box/regression/stdlibTestSnippets"), Pattern.compile("^([^_](.+))\\.kt$"), TargetBackend.JS, true);
+            }
+
+            @TestMetadata("arrayTest_plusInference.kt")
+            public void testArrayTest_plusInference() throws Exception {
+                runTest("js/js.translator/testData/box/regression/stdlibTestSnippets/arrayTest_plusInference.kt");
+            }
+
+            @TestMetadata("iterableChunked.kt")
+            public void testIterableChunked() throws Exception {
+                runTest("js/js.translator/testData/box/regression/stdlibTestSnippets/iterableChunked.kt");
+            }
+
+            @TestMetadata("json.kt")
+            public void testJson() throws Exception {
+                runTest("js/js.translator/testData/box/regression/stdlibTestSnippets/json.kt");
+            }
+
+            @TestMetadata("throwable.kt")
+            public void testThrowable() throws Exception {
+                runTest("js/js.translator/testData/box/regression/stdlibTestSnippets/throwable.kt");
+            }
+        }
     }
 
     @TestMetadata("js/js.translator/testData/box/reified")
diff --git a/js/js.translator/testData/box/regression/stdlibTestSnippets/arrayTest_plusInference.kt b/js/js.translator/testData/box/regression/stdlibTestSnippets/arrayTest_plusInference.kt
new file mode 100644
index 00000000000..5d6a91cb08f
--- /dev/null
+++ b/js/js.translator/testData/box/regression/stdlibTestSnippets/arrayTest_plusInference.kt
@@ -0,0 +1,17 @@
+// EXPECTED_REACHABLE_NODES: 1273
+// KJS_WITH_FULL_RUNTIME
+
+// Copy of stdlib test test.collections.ArraysTest.plusInference
+
+fun box(): String {
+    val arrayOfArrays: Array<Array<out Any>> = arrayOf(arrayOf<Any>("s") as Array<out Any>)
+    val elementArray = arrayOf<Any>("a") as Array<out Any>
+    val arrayPlusElement: Array<Array<out Any>> = arrayOfArrays.plusElement(elementArray)
+    assertEquals("a", arrayPlusElement[1][0])
+
+    val arrayOfStringArrays = arrayOf(arrayOf("s"))
+    val arrayPlusArray = arrayOfStringArrays + arrayOfStringArrays
+    assertEquals("s", arrayPlusArray[1][0])
+
+    return "OK"
+}
diff --git a/js/js.translator/testData/box/regression/stdlibTestSnippets/iterableChunked.kt b/js/js.translator/testData/box/regression/stdlibTestSnippets/iterableChunked.kt
new file mode 100644
index 00000000000..87ea4ca2b61
--- /dev/null
+++ b/js/js.translator/testData/box/regression/stdlibTestSnippets/iterableChunked.kt
@@ -0,0 +1,15 @@
+// EXPECTED_REACHABLE_NODES: 1750
+// KJS_WITH_FULL_RUNTIME
+
+fun box(): String {
+    val size = 2
+    val a = Array(size) { "$it" }
+    val data = Iterable { a.iterator() }
+
+    val dataChunked = data.chunked(size).single()
+    val expectedSingleChunk = data.toList()
+    if (expectedSingleChunk != dataChunked)
+        return "Fail"
+
+    return "OK"
+}
\ No newline at end of file
diff --git a/js/js.translator/testData/box/regression/stdlibTestSnippets/json.kt b/js/js.translator/testData/box/regression/stdlibTestSnippets/json.kt
new file mode 100644
index 00000000000..c91500d8a70
--- /dev/null
+++ b/js/js.translator/testData/box/regression/stdlibTestSnippets/json.kt
@@ -0,0 +1,13 @@
+// EXPECTED_REACHABLE_NODES: 1274
+// KJS_WITH_FULL_RUNTIME
+
+import kotlin.js.json
+
+fun box(): String {
+    var obj = json(Pair("firstName", "John"), Pair("lastName", "Doe"), Pair("age", 30))
+    assertEquals("John", obj["firstName"], "firstName")
+    assertEquals("Doe", obj["lastName"], "lastName")
+    assertEquals(30, obj["age"], "age")
+
+    return "OK"
+}
\ No newline at end of file
diff --git a/js/js.translator/testData/box/regression/stdlibTestSnippets/throwable.kt b/js/js.translator/testData/box/regression/stdlibTestSnippets/throwable.kt
new file mode 100644
index 00000000000..10ab02fcefc
--- /dev/null
+++ b/js/js.translator/testData/box/regression/stdlibTestSnippets/throwable.kt
@@ -0,0 +1,51 @@
+// EXPECTED_REACHABLE_NODES: 1279
+// Snippet from stdlib test test.exceptions.ExceptionTest
+
+private val cause = Exception("cause")
+
+fun assertSame(x: Any?, y: Any?) {
+    if (x !== y) {
+        error("Assertion failed")
+    }
+}
+
+private fun <T : Throwable> testCreateException(
+    noarg: () -> T,
+    fromMessage: (String?) -> T,
+    fromCause: ((Throwable?) -> T)? = null,
+    fromMessageCause: ((String?, Throwable?) -> T)? = null
+) {
+    noarg().let { e ->
+        assertEquals(null, e.message)
+        assertEquals(null, e.cause)
+    }
+
+    fromMessage("message").let { e ->
+        assertEquals("message", e.message)
+        assertEquals(null, e.cause)
+    }
+
+    fromMessage(null).let { e ->
+        assertTrue(e.message == null || e.message == "null")
+    }
+
+    fromMessageCause?.run {
+        invoke("message", cause).let { e ->
+            assertEquals("message", e.message)
+            assertSame(cause, e.cause)
+        }
+        invoke(null, null).let { e ->
+            assertEquals(null, e.message)
+            assertEquals(null, e.cause)
+        }
+    }
+
+    fromCause?.invoke(cause)?.let { e ->
+        assertSame(cause, e.cause)
+    }
+}
+
+fun box(): String {
+    testCreateException(::Throwable, ::Throwable, ::Throwable, ::Throwable)
+    return "OK"
+}