diff --git a/js/js.libraries/src/generated/org.w3c.dom.kt b/js/js.libraries/src/generated/org.w3c.dom.kt
index a019d857067..e6d87338e55 100644
--- a/js/js.libraries/src/generated/org.w3c.dom.kt
+++ b/js/js.libraries/src/generated/org.w3c.dom.kt
@@ -4578,7 +4578,7 @@ native public open class DOMPointReadOnly(x: Double, y: Double, z: Double, w: Do
 }
 
 native public open class DOMPoint : DOMPointReadOnly {
-    constructor(point: DOMPointInit = noImpl) : super(noImpl, noImpl, noImpl, noImpl)
+    constructor(point: DOMPointInit) : super(noImpl, noImpl, noImpl, noImpl)
     constructor(x: Double = 0.0, y: Double = 0.0, z: Double = 0.0, w: Double = 1.0) : super(x, y, z, w)
     override var x: Double
         get() = noImpl
@@ -4644,7 +4644,7 @@ native public open class DOMRectInit {
 
 native public open class DOMQuad {
     constructor(p1: DOMPointInit = noImpl, p2: DOMPointInit = noImpl, p3: DOMPointInit = noImpl, p4: DOMPointInit = noImpl)
-    constructor(rect: DOMRectInit = noImpl)
+    constructor(rect: DOMRectInit)
     open val p1: DOMPoint
         get() = noImpl
     open val p2: DOMPoint
diff --git a/libraries/tools/idl2k/src/main/kotlin/config.kt b/libraries/tools/idl2k/src/main/kotlin/config.kt
index f32dc1cacd9..121303801a2 100644
--- a/libraries/tools/idl2k/src/main/kotlin/config.kt
+++ b/libraries/tools/idl2k/src/main/kotlin/config.kt
@@ -52,7 +52,7 @@ val relocations = mapOf(
         "EventListener" to "org.w3c.dom.events"
 )
 
-val commentOutDeclarations = listOf(
+val commentOutDeclarations = setOf(
         "MouseEvent.screenX: Double", "MouseEvent.screenY: Double",
         "MouseEvent.clientX: Double", "MouseEvent.clientY: Double",
         "MouseEvent.x: Double", "MouseEvent.y: Double",
@@ -67,4 +67,9 @@ val commentOutDeclarations = listOf(
         "HTMLPropertiesCollection.get",
 
         "SVGElement.id"
-).toSet()
+)
+
+val requiredArguments = setOf(
+        "DOMPoint.constructor.point",
+        "DOMQuad.constructor.rect"
+)
diff --git a/libraries/tools/idl2k/src/main/kotlin/gen.kt b/libraries/tools/idl2k/src/main/kotlin/gen.kt
index 83836c8af86..dfd61b5ce79 100644
--- a/libraries/tools/idl2k/src/main/kotlin/gen.kt
+++ b/libraries/tools/idl2k/src/main/kotlin/gen.kt
@@ -138,8 +138,8 @@ fun generateTrait(repository: Repository, iface: InterfaceDefinition): GenerateT
 
 fun generateConstructorAsFunction(repository: Repository, constructor: ExtendedAttribute) = generateFunction(
         repository,
-        Operation("", UnitType, constructor.arguments, emptyList(), false),
-        functionName = "",
+        Operation("constructor", UnitType, constructor.arguments, emptyList(), false),
+        functionName = "constructor",
         nativeGetterOrSetter = NativeGetterOrSetter.NONE)
 
 fun superOrPrimaryConstructorCall(constructorAsFunction: GenerateFunction, superClassName: String, superOrPrimaryConstructor: ExtendedAttribute): GenerateFunctionCall {
diff --git a/libraries/tools/idl2k/src/main/kotlin/render.kt b/libraries/tools/idl2k/src/main/kotlin/render.kt
index 1535c439a6f..3a4e352a8c2 100644
--- a/libraries/tools/idl2k/src/main/kotlin/render.kt
+++ b/libraries/tools/idl2k/src/main/kotlin/render.kt
@@ -98,6 +98,8 @@ private val GenerateAttribute.isVar: Boolean
 private fun GenerateAttribute.isCommented(parent: String) = "$parent.$name" in commentOutDeclarations || "$parent.$name: ${type.render()}" in commentOutDeclarations
 private fun GenerateFunction.isCommented(parent: String) =
         "$parent.$name" in commentOutDeclarations || "$parent.$name(${arguments.size()})" in commentOutDeclarations
+private fun GenerateAttribute.isRequiredFunctionArgument(owner: String, functionName: String) = "$owner.$functionName.$name" in requiredArguments
+private fun GenerateFunction.fixRequiredArguments(parent: String) = copy(arguments = arguments.map { arg -> arg.copy(initializer = if (arg.isRequiredFunctionArgument(parent, name)) null else arg.initializer) })
 
 fun Appendable.render(allTypes: Map<String, GenerateTraitOrClass>, typeNamesToUnions: Map<String, List<String>>, iface: GenerateTraitOrClass, markerAnnotation: Boolean = false) {
     append("native public ")
@@ -115,7 +117,7 @@ fun Appendable.render(allTypes: Map<String, GenerateTraitOrClass>, typeNamesToUn
     append(iface.name)
     val primary = iface.primaryConstructor
     if (primary != null && (primary.constructor.arguments.isNotEmpty() || iface.secondaryConstructors.isNotEmpty())) {
-        renderArgumentsDeclaration(primary.constructor.arguments.dynamicIfUnknownType(allTypes.keySet()), false)
+        renderArgumentsDeclaration(primary.constructor.fixRequiredArguments(iface.name).arguments.dynamicIfUnknownType(allTypes.keySet()), false)
     }
 
     val superCallName = primary?.initTypeCall?.name
@@ -133,7 +135,7 @@ fun Appendable.render(allTypes: Map<String, GenerateTraitOrClass>, typeNamesToUn
     iface.secondaryConstructors.forEach { secondary ->
         indent(false, 1)
         append("constructor")
-        renderArgumentsDeclaration(secondary.constructor.arguments.dynamicIfUnknownType(allTypes.keySet()), false)
+        renderArgumentsDeclaration(secondary.constructor.fixRequiredArguments(iface.name).arguments.dynamicIfUnknownType(allTypes.keySet()), false)
 
         if (secondary.initTypeCall != null) {
             append(" : ")
@@ -155,7 +157,7 @@ fun Appendable.render(allTypes: Map<String, GenerateTraitOrClass>, typeNamesToUn
         renderAttributeDeclaration(arg, override = arg.signature in superSignatures, open = iface.kind == GenerateDefinitionKind.CLASS && arg.readOnly, commented = arg.isCommented(iface.name))
     }
     iface.memberFunctions.filter { it !in superFunctions && !it.static }.map { it.dynamicIfUnknownType(allTypes.keySet()) }.groupBy { it.signature }.reduceValues(::betterFunction).values().forEach {
-        renderFunctionDeclaration(it, it.signature in superSignatures, commented = it.isCommented(iface.name))
+        renderFunctionDeclaration(it.fixRequiredArguments(iface.name), it.signature in superSignatures, commented = it.isCommented(iface.name))
     }
 
     val staticAttributes = iface.memberAttributes.filter { it.static }
@@ -172,7 +174,7 @@ fun Appendable.render(allTypes: Map<String, GenerateTraitOrClass>, typeNamesToUn
             renderAttributeDeclaration(it, override = false, open = false, level = 2, commented = it.isCommented(iface.name))
         }
         staticFunctions.forEach {
-            renderFunctionDeclaration(it, override = false, level = 2, commented = it.isCommented(iface.name))
+            renderFunctionDeclaration(it.fixRequiredArguments(iface.name), override = false, level = 2, commented = it.isCommented(iface.name))
         }
         indent(false, 1)
         appendln("}")