diff --git a/libraries/stdlib/js/src/kotlin/NumbersJs.kt b/libraries/stdlib/js/src/kotlin/NumbersJs.kt
index 0e0c2397453..77679dd482d 100644
--- a/libraries/stdlib/js/src/kotlin/NumbersJs.kt
+++ b/libraries/stdlib/js/src/kotlin/NumbersJs.kt
@@ -38,6 +38,63 @@ public actual fun Double.isFinite(): Boolean = !isInfinite() && !isNaN()
 public actual fun Float.isFinite(): Boolean = !isInfinite() && !isNaN()
 
 
+/**
+ * Returns a bit representation of the specified floating-point value as [Long]
+ * according to the IEEE 754 floating-point "double format" bit layout.
+ */
+@SinceKotlin("1.2")
+public actual fun Double.toBits(): Long =
+    doubleToRawBits(if (this.isNaN()) Double.NaN else this)
+
+/**
+ * Returns a bit representation of the specified floating-point value as [Long]
+ * according to the IEEE 754 floating-point "double format" bit layout,
+ * preserving `NaN` values exact layout.
+ */
+@SinceKotlin("1.2")
+public actual fun Double.toRawBits(): Long =
+    doubleToRawBits(this)
+
+/**
+ * Returns the [Double] value corresponding to a given bit representation.
+ */
+@SinceKotlin("1.2")
+@kotlin.internal.InlineOnly
+public actual inline fun Double.Companion.fromBits(bits: Long): Double =
+    doubleFromBits(bits)
+
+/**
+ * Returns a bit representation of the specified floating-point value as [Int]
+ * according to the IEEE 754 floating-point "single format" bit layout.
+ *
+ * Note that in Kotlin/JS [Float] range is wider than "single format" bit layout can represent,
+ * so some [Float] values may overflow, underflow or loose their accuracy after conversion to bits and back.
+ */
+@SinceKotlin("1.2")
+public actual fun Float.toBits(): Int =
+    floatToRawBits(if (this.isNaN()) Float.NaN else this)
+
+/**
+ * Returns a bit representation of the specified floating-point value as [Int]
+ * according to the IEEE 754 floating-point "single format" bit layout,
+ * preserving `NaN` values exact layout.
+ *
+ * Note that in Kotlin/JS [Float] range is wider than "single format" bit layout can represent,
+ * so some [Float] values may overflow, underflow or loose their accuracy after conversion to bits and back.
+ */
+@SinceKotlin("1.2")
+public actual fun Float.toRawBits(): Int =
+    floatToRawBits(this)
+
+/**
+ * Returns the [Float] value corresponding to a given bit representation.
+ */
+@SinceKotlin("1.2")
+@kotlin.internal.InlineOnly
+public actual inline fun Float.Companion.fromBits(bits: Int): Float =
+    floatFromBits(bits)
+
+
 /**
  * Counts the number of set bits in the binary representation of this [Int] number.
  */
diff --git a/libraries/stdlib/js/src/kotlin/math.kt b/libraries/stdlib/js/src/kotlin/math.kt
index 5bfcf44ac2a..96067b5f025 100644
--- a/libraries/stdlib/js/src/kotlin/math.kt
+++ b/libraries/stdlib/js/src/kotlin/math.kt
@@ -448,6 +448,18 @@ public actual inline val Double.absoluteValue: Double get() = nativeMath.abs(thi
 @InlineOnly
 public actual inline val Double.sign: Double get() = nativeSign(this)
 
+/**
+ * Returns this value with the sign bit same as of the [sign] value.
+ *
+ * If [sign] is `NaN` the sign of the result is undefined.
+ */
+@SinceKotlin("1.2")
+public actual fun Double.withSign(sign: Double): Double {
+    val thisSignBit = doubleSignBit(this)
+    val newSignBit = doubleSignBit(sign)
+    return if (thisSignBit == newSignBit) this else -this
+}
+
 /**
  * Returns this value with the sign bit same as of the [sign] value.
  */
diff --git a/libraries/stdlib/js/src/kotlin/math_js-ir.kt b/libraries/stdlib/js/src/kotlin/math_js-ir.kt
deleted file mode 100644
index 69456f6b51d..00000000000
--- a/libraries/stdlib/js/src/kotlin/math_js-ir.kt
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-package kotlin.math
-
-/**
- * Returns this value with the sign bit same as of the [sign] value.
- *
- * If [sign] is `NaN` the sign of the result is undefined.
- */
-@SinceKotlin("1.2")
-public actual fun Double.withSign(sign: Double): Double {
-    val thisSignBit = doubleSignBit(this)
-    val newSignBit = doubleSignBit(sign)
-    return if (thisSignBit == newSignBit) this else -this
-}
\ No newline at end of file
diff --git a/libraries/stdlib/js/src/kotlin/numbers_js-ir.kt b/libraries/stdlib/js/src/kotlin/numbers_js-ir.kt
deleted file mode 100644
index 771a4b9585f..00000000000
--- a/libraries/stdlib/js/src/kotlin/numbers_js-ir.kt
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package kotlin
-
-/**
- * Returns a bit representation of the specified floating-point value as [Long]
- * according to the IEEE 754 floating-point "double format" bit layout.
- */
-@SinceKotlin("1.2")
-public actual fun Double.toBits(): Long =
-    doubleToRawBits(if (this.isNaN()) Double.NaN else this)
-
-/**
- * Returns a bit representation of the specified floating-point value as [Long]
- * according to the IEEE 754 floating-point "double format" bit layout,
- * preserving `NaN` values exact layout.
- */
-@SinceKotlin("1.2")
-public actual fun Double.toRawBits(): Long =
-    doubleToRawBits(this)
-
-/**
- * Returns the [Double] value corresponding to a given bit representation.
- */
-@SinceKotlin("1.2")
-@kotlin.internal.InlineOnly
-public actual inline fun Double.Companion.fromBits(bits: Long): Double =
-    doubleFromBits(bits)
-
-/**
- * Returns a bit representation of the specified floating-point value as [Int]
- * according to the IEEE 754 floating-point "single format" bit layout.
- *
- * Note that in Kotlin/JS [Float] range is wider than "single format" bit layout can represent,
- * so some [Float] values may overflow, underflow or loose their accuracy after conversion to bits and back.
- */
-@SinceKotlin("1.2")
-public actual fun Float.toBits(): Int =
-    floatToRawBits(if (this.isNaN()) Float.NaN else this)
-
-/**
- * Returns a bit representation of the specified floating-point value as [Int]
- * according to the IEEE 754 floating-point "single format" bit layout,
- * preserving `NaN` values exact layout.
- *
- * Note that in Kotlin/JS [Float] range is wider than "single format" bit layout can represent,
- * so some [Float] values may overflow, underflow or loose their accuracy after conversion to bits and back.
- */
-@SinceKotlin("1.2")
-public actual fun Float.toRawBits(): Int =
-    floatToRawBits(this)
-
-/**
- * Returns the [Float] value corresponding to a given bit representation.
- */
-@SinceKotlin("1.2")
-@kotlin.internal.InlineOnly
-public actual inline fun Float.Companion.fromBits(bits: Int): Float =
-    floatFromBits(bits)
\ No newline at end of file
diff --git a/libraries/stdlib/js/src/kotlin/text/numberConversions.kt b/libraries/stdlib/js/src/kotlin/text/numberConversions.kt
index 157cf1fe941..28714521963 100644
--- a/libraries/stdlib/js/src/kotlin/text/numberConversions.kt
+++ b/libraries/stdlib/js/src/kotlin/text/numberConversions.kt
@@ -124,6 +124,15 @@ public actual inline fun Short.toString(radix: Int): String = this.toInt().toStr
 @SinceKotlin("1.2")
 public actual fun Int.toString(radix: Int): String = asDynamic().toString(checkRadix(radix))
 
+/**
+ * Returns a string representation of this [Long] value in the specified [radix].
+ *
+ * @throws IllegalArgumentException when [radix] is not a valid radix for number to string conversion.
+ */
+@SinceKotlin("1.2")
+public actual fun Long.toString(radix: Int): String =
+    this.toStringImpl(checkRadix(radix))
+
 private fun String.isNaN(): Boolean = when (this.lowercase()) {
     "nan", "+nan", "-nan" -> true
     else -> false
diff --git a/libraries/stdlib/js/src/kotlin/text/numberConversions_js-ir.kt b/libraries/stdlib/js/src/kotlin/text/numberConversions_js-ir.kt
deleted file mode 100644
index 5a17b444518..00000000000
--- a/libraries/stdlib/js/src/kotlin/text/numberConversions_js-ir.kt
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package kotlin.text
-
-/**
- * Returns a string representation of this [Long] value in the specified [radix].
- *
- * @throws IllegalArgumentException when [radix] is not a valid radix for number to string conversion.
- */
-@SinceKotlin("1.2")
-public actual fun Long.toString(radix: Int): String =
-    this.toStringImpl(checkRadix(radix))
\ No newline at end of file