[BUGFIX release] Compile input type sexprs

- Allow {{input}} with a SubExpression type
  (e.g., {{input type=(if true 'password' 'text')}})
  to be compiled.

packages/ember-template-compiler/lib/plugins/transform-input-type-syntax.js

@@ -62,6 +62,8 @@ function insertTypeHelperParameter(node, builders) {
     }
   }
   if (pair && pair.value.type !== 'StringLiteral') {
-    node.params.unshift(builders.sexpr('-input-type', [builders.path(pair.value.original, pair.loc)], null, pair.loc));
+    let path = pair.value.path ? pair.value.path.original : pair.value.original;
+
+    node.params.unshift(builders.sexpr('-input-type', [builders.path(path, pair.loc)], null, pair.loc));
   }
 }

packages/ember-template-compiler/tests/plugins/transform-input-type-syntax-test.js

@@ -0,0 +1,21 @@
+import { compile } from '../../index';
+
+QUnit.module('ember-template-compiler: input type syntax');
+
+QUnit.test('Can compile an {{input}} helper that has a sub-expression value as its type', function() {
+  expect(0);
+
+  compile(`{{input type=(if true 'password' 'text')}}`);
+});
+
+QUnit.test('Can compile an {{input}} helper with a string literal type', function() {
+  expect(0);
+
+  compile(`{{input type='text'}}`);
+});
+
+QUnit.test('Can compile an {{input}} helper with a type stored in a var', function() {
+  expect(0);
+
+  compile(`{{input type=_type}}`);
+});