diff --git a/libraries/kotlin-dom-api-compat/build.gradle.kts b/libraries/kotlin-dom-api-compat/build.gradle.kts
index 08b234204ee..a3058ea79bf 100644
--- a/libraries/kotlin-dom-api-compat/build.gradle.kts
+++ b/libraries/kotlin-dom-api-compat/build.gradle.kts
@@ -10,6 +10,7 @@ val jsStdlibSources = "${projectDir}/../stdlib/js/src"
 
 @Suppress("UNUSED_VARIABLE")
 kotlin {
+    explicitApi()
     js {
         sourceSets {
             val main by getting {
diff --git a/libraries/stdlib/js/src/kotlin/dom/Classes.kt b/libraries/stdlib/js/src/kotlin/dom/Classes.kt
index d4df0b1d60c..bc223a0cec0 100644
--- a/libraries/stdlib/js/src/kotlin/dom/Classes.kt
+++ b/libraries/stdlib/js/src/kotlin/dom/Classes.kt
@@ -18,7 +18,7 @@ import kotlinx.dom.removeClass as newRemoveClass
     replaceWith = ReplaceWith("this.hasClass(cssClass)", "kotlinx.dom.hasClass")
 )
 @DeprecatedSinceKotlin(warningSince = "1.4", errorSince = "1.6")
-inline fun Element.hasClass(cssClass: String): Boolean = this.newHasClass(cssClass)
+public inline fun Element.hasClass(cssClass: String): Boolean = this.newHasClass(cssClass)
 
 /**
  * Adds CSS class to element. Has no effect if all specified classes are already in class attribute of the element
@@ -31,7 +31,7 @@ inline fun Element.hasClass(cssClass: String): Boolean = this.newHasClass(cssCla
     replaceWith = ReplaceWith("this.addClass(cssClasses)", "kotlinx.dom.addClass")
 )
 @DeprecatedSinceKotlin(warningSince = "1.4", errorSince = "1.6")
-inline fun Element.addClass(vararg cssClasses: String): Boolean = this.newAddClass(*cssClasses)
+public inline fun Element.addClass(vararg cssClasses: String): Boolean = this.newAddClass(*cssClasses)
 
 /**
  * Removes all [cssClasses] from element. Has no effect if all specified classes are missing in class attribute of the element
@@ -44,4 +44,4 @@ inline fun Element.addClass(vararg cssClasses: String): Boolean = this.newAddCla
     replaceWith = ReplaceWith("this.removeClass(cssClasses)", "kotlinx.dom.removeClass")
 )
 @DeprecatedSinceKotlin(warningSince = "1.4", errorSince = "1.6")
-inline fun Element.removeClass(vararg cssClasses: String): Boolean = this.newRemoveClass(*cssClasses)
\ No newline at end of file
+public inline fun Element.removeClass(vararg cssClasses: String): Boolean = this.newRemoveClass(*cssClasses)
\ No newline at end of file
diff --git a/libraries/stdlib/js/src/kotlin/dom/Mutations.kt b/libraries/stdlib/js/src/kotlin/dom/Mutations.kt
index 1c142f07add..4fd3ffb4141 100644
--- a/libraries/stdlib/js/src/kotlin/dom/Mutations.kt
+++ b/libraries/stdlib/js/src/kotlin/dom/Mutations.kt
@@ -18,7 +18,7 @@ import kotlinx.dom.clear as newClear
     replaceWith = ReplaceWith("this.clear()", "kotlinx.dom.clear")
 )
 @DeprecatedSinceKotlin(warningSince = "1.4", errorSince = "1.6")
-public inline fun Node.clear() = this.newClear()
+public inline fun Node.clear(): Unit = this.newClear()
 
 /**
  * Creates text node and append it to the element.
@@ -31,4 +31,4 @@ public inline fun Node.clear() = this.newClear()
     replaceWith = ReplaceWith("this.appendText(text)", "kotlinx.dom.appendText")
 )
 @DeprecatedSinceKotlin(warningSince = "1.4", errorSince = "1.6")
-inline fun Element.appendText(text: String): Element = this.newAppendText(text)
+public inline fun Element.appendText(text: String): Element = this.newAppendText(text)
diff --git a/libraries/stdlib/js/src/kotlinx/dom/Classes.kt b/libraries/stdlib/js/src/kotlinx/dom/Classes.kt
index 13eb8e90133..eda5bce74cc 100644
--- a/libraries/stdlib/js/src/kotlinx/dom/Classes.kt
+++ b/libraries/stdlib/js/src/kotlinx/dom/Classes.kt
@@ -9,7 +9,7 @@ import org.w3c.dom.*
 
 /** Returns true if the element has the given CSS class style in its 'class' attribute */
 @SinceKotlin("1.4")
-fun Element.hasClass(cssClass: String): Boolean = className.matches("""(^|.*\s+)$cssClass($|\s+.*)""".toRegex())
+public fun Element.hasClass(cssClass: String): Boolean = className.matches("""(^|.*\s+)$cssClass($|\s+.*)""".toRegex())
 
 /**
  * Adds CSS class to element. Has no effect if all specified classes are already in class attribute of the element
@@ -17,7 +17,7 @@ fun Element.hasClass(cssClass: String): Boolean = className.matches("""(^|.*\s+)
  * @return true if at least one class has been added
  */
 @SinceKotlin("1.4")
-fun Element.addClass(vararg cssClasses: String): Boolean {
+public fun Element.addClass(vararg cssClasses: String): Boolean {
     val missingClasses = cssClasses.filterNot { hasClass(it) }
     if (missingClasses.isNotEmpty()) {
         val presentClasses = className.trim()
@@ -40,7 +40,7 @@ fun Element.addClass(vararg cssClasses: String): Boolean {
  * @return true if at least one class has been removed
  */
 @SinceKotlin("1.4")
-fun Element.removeClass(vararg cssClasses: String): Boolean {
+public fun Element.removeClass(vararg cssClasses: String): Boolean {
     if (cssClasses.any { hasClass(it) }) {
         val toBeRemoved = cssClasses.toSet()
         className = className.trim().split("\\s+".toRegex()).filter { it !in toBeRemoved }.joinToString(" ")
diff --git a/libraries/stdlib/js/src/kotlinx/dom/Mutations.kt b/libraries/stdlib/js/src/kotlinx/dom/Mutations.kt
index 1f942cf7399..6b85c2013b4 100644
--- a/libraries/stdlib/js/src/kotlinx/dom/Mutations.kt
+++ b/libraries/stdlib/js/src/kotlinx/dom/Mutations.kt
@@ -21,7 +21,7 @@ public fun Node.clear() {
  * @return this element
  */
 @SinceKotlin("1.4")
-fun Element.appendText(text: String): Element {
+public fun Element.appendText(text: String): Element {
     appendChild(ownerDocument!!.createTextNode(text))
     return this
 }
diff --git a/libraries/stdlib/js/src/org.w3c/deprecated.kt b/libraries/stdlib/js/src/org.w3c/deprecated.kt
index aba6b12e917..7b01c6f4b87 100644
--- a/libraries/stdlib/js/src/org.w3c/deprecated.kt
+++ b/libraries/stdlib/js/src/org.w3c/deprecated.kt
@@ -6,17 +6,17 @@
 package org.w3c.dom
 
 @Deprecated("Use UnionMessagePortOrWindowProxy instead.", ReplaceWith("UnionMessagePortOrWindowProxy"))
-typealias UnionMessagePortOrWindow = UnionMessagePortOrWindowProxy
+public typealias UnionMessagePortOrWindow = UnionMessagePortOrWindowProxy
 
 @Deprecated("Use `as` instead.", ReplaceWith("`as`"))
-var HTMLLinkElement.as_
+public var HTMLLinkElement.as_: org.w3c.fetch.RequestDestination
     get() = `as`
     set(value) {
         `as` = value
     }
 
 @Deprecated("Use `is` instead.", ReplaceWith("`is`"))
-var ElementCreationOptions.is_
+public var ElementCreationOptions.is_: String?
     get() = `is`
     set(value) {
         `is` = value
diff --git a/libraries/stdlib/wasm/js/src/kotlinx/dom/Classes.kt b/libraries/stdlib/wasm/js/src/kotlinx/dom/Classes.kt
index 13eb8e90133..eda5bce74cc 100644
--- a/libraries/stdlib/wasm/js/src/kotlinx/dom/Classes.kt
+++ b/libraries/stdlib/wasm/js/src/kotlinx/dom/Classes.kt
@@ -9,7 +9,7 @@ import org.w3c.dom.*
 
 /** Returns true if the element has the given CSS class style in its 'class' attribute */
 @SinceKotlin("1.4")
-fun Element.hasClass(cssClass: String): Boolean = className.matches("""(^|.*\s+)$cssClass($|\s+.*)""".toRegex())
+public fun Element.hasClass(cssClass: String): Boolean = className.matches("""(^|.*\s+)$cssClass($|\s+.*)""".toRegex())
 
 /**
  * Adds CSS class to element. Has no effect if all specified classes are already in class attribute of the element
@@ -17,7 +17,7 @@ fun Element.hasClass(cssClass: String): Boolean = className.matches("""(^|.*\s+)
  * @return true if at least one class has been added
  */
 @SinceKotlin("1.4")
-fun Element.addClass(vararg cssClasses: String): Boolean {
+public fun Element.addClass(vararg cssClasses: String): Boolean {
     val missingClasses = cssClasses.filterNot { hasClass(it) }
     if (missingClasses.isNotEmpty()) {
         val presentClasses = className.trim()
@@ -40,7 +40,7 @@ fun Element.addClass(vararg cssClasses: String): Boolean {
  * @return true if at least one class has been removed
  */
 @SinceKotlin("1.4")
-fun Element.removeClass(vararg cssClasses: String): Boolean {
+public fun Element.removeClass(vararg cssClasses: String): Boolean {
     if (cssClasses.any { hasClass(it) }) {
         val toBeRemoved = cssClasses.toSet()
         className = className.trim().split("\\s+".toRegex()).filter { it !in toBeRemoved }.joinToString(" ")
diff --git a/libraries/stdlib/wasm/js/src/kotlinx/dom/ItemArrayLike.kt b/libraries/stdlib/wasm/js/src/kotlinx/dom/ItemArrayLike.kt
index 165dca7044b..0fe0da70d76 100644
--- a/libraries/stdlib/wasm/js/src/kotlinx/dom/ItemArrayLike.kt
+++ b/libraries/stdlib/wasm/js/src/kotlinx/dom/ItemArrayLike.kt
@@ -6,8 +6,8 @@
 package org.w3c.dom
 
 public external interface ItemArrayLike<out T : JsAny?> : JsAny {
-    val length: Int
-    fun item(index: Int): T?
+    public val length: Int
+    public fun item(index: Int): T?
 }
 
 public fun <T : JsAny?> ItemArrayLike<T>.asList(): List<T> = object : AbstractList<T>() {
diff --git a/libraries/stdlib/wasm/js/src/kotlinx/dom/Mutations.kt b/libraries/stdlib/wasm/js/src/kotlinx/dom/Mutations.kt
index 1f942cf7399..6b85c2013b4 100644
--- a/libraries/stdlib/wasm/js/src/kotlinx/dom/Mutations.kt
+++ b/libraries/stdlib/wasm/js/src/kotlinx/dom/Mutations.kt
@@ -21,7 +21,7 @@ public fun Node.clear() {
  * @return this element
  */
 @SinceKotlin("1.4")
-fun Element.appendText(text: String): Element {
+public fun Element.appendText(text: String): Element {
     appendChild(ownerDocument!!.createTextNode(text))
     return this
 }