feat: add polyfills insertion for ES Next used features

js/js.translator/testData/box/polyfills/expm1/expm1WithExistedIntrinsic.kt

@@ -0,0 +1,26 @@
+// WITH_STDLIB
+// TARGET_BACKEND: JS_IR
+// FILE: main.js
+Math.expm1 = function expm1(x) {
+    expm1.called = true;
+    switch (x) {
+        case -1: return -0.6321205588285577
+        case 0: return 0.0
+        case 1: return 1.718281828459045
+        case 2: return 6.38905609893065
+    }
+}
+
+// FILE: main.kt
+import kotlin.math.expm1
+
+fun box(): String {
+    assertEquals(expm1(-1.0), -0.6321205588285577)
+    assertEquals(expm1(0.0), 0.0)
+    assertEquals(expm1(1.0), 1.718281828459045)
+    assertEquals(expm1(2.0), 6.38905609893065)
+
+    assertEquals(js("Math.expm1.called"), true)
+
+    return "OK"
+}

js/js.translator/testData/box/polyfills/expm1/expm1WithoutExistedIntrinsic.kt

@@ -0,0 +1,18 @@
+// WITH_STDLIB
+// TARGET_BACKEND: JS_IR
+// FILE: main.js
+Math.expm1 = undefined;
+
+// FILE: main.kt
+import kotlin.math.expm1
+
+fun box(): String {
+    assertEquals(expm1(-1.0), -0.6321205588285577)
+    assertEquals(expm1(0.0), 0.0)
+    assertEquals(expm1(1.0), 1.718281828459045)
+    assertEquals(expm1(2.0), 6.38905609893065)
+
+    assertEquals(js("Math.expm1.called"), js("undefined"))
+
+    return "OK"
+}