diff --git a/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/Codegen.kt b/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/estree.kt
similarity index 92%
rename from kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/Codegen.kt
rename to kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/estree.kt
index f5727fb16..5036e96c0 100644
--- a/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/Codegen.kt
+++ b/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/estree.kt
@@ -2,7 +2,7 @@ package kscience.kmath.estree
 
 import kscience.kmath.ast.MST
 import kscience.kmath.ast.MstExpression
-import kscience.kmath.estree.internal.JSBuilder
+import kscience.kmath.estree.internal.ESTreeBuilder
 import kscience.kmath.estree.internal.estree.BaseExpression
 import kscience.kmath.expressions.Expression
 import kscience.kmath.operations.Algebra
@@ -11,7 +11,7 @@ import kscience.kmath.operations.RealField
 
 @PublishedApi
 internal fun <T> MST.compileWith(algebra: Algebra<T>): Expression<T> {
-    fun JSBuilder<T>.visit(node: MST): BaseExpression = when (node) {
+    fun ESTreeBuilder<T>.visit(node: MST): BaseExpression = when (node) {
         is MST.Symbolic -> {
             val symbol = try {
                 algebra.symbol(node.value)
@@ -57,7 +57,7 @@ internal fun <T> MST.compileWith(algebra: Algebra<T>): Expression<T> {
         }
     }
 
-    return JSBuilder<T> { visit(this@compileWith) }.instance
+    return ESTreeBuilder<T> { visit(this@compileWith) }.instance
 }
 
 
diff --git a/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/internal/JSBuilder.kt b/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/internal/ESTreeBuilder.kt
similarity index 96%
rename from kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/internal/JSBuilder.kt
rename to kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/internal/ESTreeBuilder.kt
index 6845437b3..e58ad54b3 100644
--- a/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/internal/JSBuilder.kt
+++ b/kmath-ast/src/jsMain/kotlin/kscience/kmath/estree/internal/ESTreeBuilder.kt
@@ -5,7 +5,7 @@ import kscience.kmath.estree.internal.estree.*
 import kscience.kmath.expressions.Expression
 import kscience.kmath.expressions.Symbol
 
-internal class JSBuilder<T>(val bodyCallback: JSBuilder<T>.() -> BaseExpression) {
+internal class ESTreeBuilder<T>(val bodyCallback: ESTreeBuilder<T>.() -> BaseExpression) {
     private class GeneratedExpression<T>(val executable: dynamic, val constants: Array<dynamic>) : Expression<T> {
         @Suppress("UNUSED_VARIABLE")
         override fun invoke(arguments: Map<Symbol, T>): T {