feat: add polyfills insertion for ES Next used features

js/js.translator/testData/box/polyfills/atanh/atanhWithExistedIntrinsic.kt

@@ -0,0 +1,26 @@
+// WITH_STDLIB
+// TARGET_BACKEND: JS_IR
+// FILE: main.js
+Math.atanh = function atanh(x) {
+    atanh.called = true;
+    switch (x) {
+        case -1: return -Infinity
+        case 0: return 0.0
+        case 0.5: return 0.5493061443340548
+        case 1: return Infinity
+    }
+}
+
+// FILE: main.kt
+import kotlin.math.atanh
+
+fun box(): String {
+    assertEquals(atanh(-1.0), Double.NEGATIVE_INFINITY)
+    assertEquals(atanh(0.0), 0.0)
+    assertEquals(atanh(0.5), 0.5493061443340548)
+    assertEquals(atanh(1.0), Double.POSITIVE_INFINITY)
+
+    assertEquals(js("Math.atanh.called"), true)
+
+    return "OK"
+}

js/js.translator/testData/box/polyfills/atanh/atanhWithoutExistedIntrinsic.kt

@@ -0,0 +1,18 @@
+// WITH_STDLIB
+// TARGET_BACKEND: JS_IR
+// FILE: main.js
+Math.atanh = undefined;
+
+// FILE: main.kt
+import kotlin.math.atanh
+
+fun box(): String {
+    assertEquals(atanh(-1.0), Double.NEGATIVE_INFINITY)
+    assertEquals(atanh(0.0), 0.0)
+    assertEquals(atanh(0.5), 0.5493061443340548)
+    assertEquals(atanh(1.0), Double.POSITIVE_INFINITY)
+
+    assertEquals(js("Math.atanh.called"), js("undefined"))
+
+    return "OK"
+}