support module live bindings in arbitary positions not in Program statement position - fixes #1760

test/core/fixtures/transformation/es6.modules-common/loose-collision/actual.js

@@ -0,0 +1,5 @@
+if (true) {
+  import foo from "foo";
+} else {
+  import bar from "foo";
+}

test/core/fixtures/transformation/es6.modules-common/loose-collision/options.json

@@ -0,0 +1,4 @@
+{
+  "throws": "Duplicate module declarations with the same source but in different scopes",
+  "loose": "es6.modules"
+}

test/core/fixtures/transformation/es6.modules-common/loose/actual.js

@@ -1 +1,7 @@
 export var foo = 5;
+
+if (true) {
+  import bar from "bar";
+}
+
+bar;

test/core/fixtures/transformation/es6.modules-common/loose/expected.js

@@ -2,4 +2,12 @@
 
 exports.__esModule = true;
 var foo = 5;
-exports.foo = foo;
+
+exports.foo = foo;
+if (true) {
+  var _bar = require("bar");
+
+  var _bar2 = babelHelpers.interopRequireDefault(_bar);
+}
+
+bar;