diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/InvalidationTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/InvalidationTestGenerated.java
index f7f97552ca4..9492a222e31 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/InvalidationTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/InvalidationTestGenerated.java
@@ -30,6 +30,16 @@ public class InvalidationTestGenerated extends AbstractInvalidationTest {
         KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("js/js.translator/testData/incremental/invalidation"), Pattern.compile("^([^_](.+))$"), null, TargetBackend.JS_IR, false);
     }
 
+    @TestMetadata("fastPath1")
+    public void testFastPath1() throws Exception {
+        runTest("js/js.translator/testData/incremental/invalidation/fastPath1/");
+    }
+
+    @TestMetadata("fastPath2")
+    public void testFastPath2() throws Exception {
+        runTest("js/js.translator/testData/incremental/invalidation/fastPath2/");
+    }
+
     @TestMetadata("simple")
     public void testSimple() throws Exception {
         runTest("js/js.translator/testData/incremental/invalidation/simple/");
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath1/lib1/l1.kt b/js/js.translator/testData/incremental/invalidation/fastPath1/lib1/l1.kt
new file mode 100644
index 00000000000..859b384ad7f
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath1/lib1/l1.kt
@@ -0,0 +1 @@
+fun foo() = 42
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath1/lib1/module.info b/js/js.translator/testData/incremental/invalidation/fastPath1/lib1/module.info
new file mode 100644
index 00000000000..aadb891979d
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath1/lib1/module.info
@@ -0,0 +1,7 @@
+STEP 0:
+    dependencies: stdlib
+    dirty: l1.kt
+STEP 1:
+    dependencies: stdlib
+    dirty:
+    flags: FP
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath1/lib2/l2.kt b/js/js.translator/testData/incremental/invalidation/fastPath1/lib2/l2.kt
new file mode 100644
index 00000000000..baeaa737440
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath1/lib2/l2.kt
@@ -0,0 +1,2 @@
+
+fun qux() = foo()
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath1/lib2/l2.kt.1 b/js/js.translator/testData/incremental/invalidation/fastPath1/lib2/l2.kt.1
new file mode 100644
index 00000000000..3aee91a2674
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath1/lib2/l2.kt.1
@@ -0,0 +1 @@
+fun qux() = foo() + 2
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath1/lib2/module.info b/js/js.translator/testData/incremental/invalidation/fastPath1/lib2/module.info
new file mode 100644
index 00000000000..64726957d38
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath1/lib2/module.info
@@ -0,0 +1,9 @@
+STEP 0:
+    dependencies: stdlib, lib1
+    dirty: l2.kt
+
+STEP 1:
+    dependencies: stdlib, lib1
+    modifications:
+        U : l2.kt.1 -> l2.kt
+    dirty: l2.kt
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath1/main/m.kt b/js/js.translator/testData/incremental/invalidation/fastPath1/main/m.kt
new file mode 100644
index 00000000000..3ed427f027a
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath1/main/m.kt
@@ -0,0 +1,2 @@
+
+fun box() = qux()
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath1/main/module.info b/js/js.translator/testData/incremental/invalidation/fastPath1/main/module.info
new file mode 100644
index 00000000000..d2047496476
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath1/main/module.info
@@ -0,0 +1,6 @@
+STEP 0:
+    dependencies: stdlib, lib1, lib2
+    dirty: m.kt
+
+STEP 1:
+    dependencies: stdlib, lib1, lib2
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath1/project.info b/js/js.translator/testData/incremental/invalidation/fastPath1/project.info
new file mode 100644
index 00000000000..710e8567360
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath1/project.info
@@ -0,0 +1,7 @@
+MODULES: lib1, lib2, main
+
+STEP 0:
+    libs: lib1, lib2, main
+
+STEP 1:
+    libs: lib1, lib2, main
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath2/lib1/l1.kt b/js/js.translator/testData/incremental/invalidation/fastPath2/lib1/l1.kt
new file mode 100644
index 00000000000..859b384ad7f
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath2/lib1/l1.kt
@@ -0,0 +1 @@
+fun foo() = 42
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath2/lib1/module.info b/js/js.translator/testData/incremental/invalidation/fastPath2/lib1/module.info
new file mode 100644
index 00000000000..aadb891979d
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath2/lib1/module.info
@@ -0,0 +1,7 @@
+STEP 0:
+    dependencies: stdlib
+    dirty: l1.kt
+STEP 1:
+    dependencies: stdlib
+    dirty:
+    flags: FP
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath2/lib2/l2.kt b/js/js.translator/testData/incremental/invalidation/fastPath2/lib2/l2.kt
new file mode 100644
index 00000000000..baeaa737440
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath2/lib2/l2.kt
@@ -0,0 +1,2 @@
+
+fun qux() = foo()
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath2/lib2/module.info b/js/js.translator/testData/incremental/invalidation/fastPath2/lib2/module.info
new file mode 100644
index 00000000000..1b6a559ca71
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath2/lib2/module.info
@@ -0,0 +1,7 @@
+STEP 0:
+    dependencies: stdlib, lib1
+    dirty: l2.kt
+
+STEP 1:
+    dependencies: stdlib, lib1
+    flags: FP
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath2/main/m.kt b/js/js.translator/testData/incremental/invalidation/fastPath2/main/m.kt
new file mode 100644
index 00000000000..3ed427f027a
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath2/main/m.kt
@@ -0,0 +1,2 @@
+
+fun box() = qux()
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath2/main/module.info b/js/js.translator/testData/incremental/invalidation/fastPath2/main/module.info
new file mode 100644
index 00000000000..2791be3075a
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath2/main/module.info
@@ -0,0 +1,7 @@
+STEP 0:
+    dependencies: stdlib, lib1, lib2
+    dirty: m.kt
+
+STEP 1:
+    dependencies: stdlib, lib1, lib2
+    flags: FP
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/fastPath2/project.info b/js/js.translator/testData/incremental/invalidation/fastPath2/project.info
new file mode 100644
index 00000000000..710e8567360
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fastPath2/project.info
@@ -0,0 +1,7 @@
+MODULES: lib1, lib2, main
+
+STEP 0:
+    libs: lib1, lib2, main
+
+STEP 1:
+    libs: lib1, lib2, main
\ No newline at end of file