Default templates to sourceType:module.

packages/babel-helpers/src/helpers.js

@@ -6,7 +6,7 @@ const helpers = {};
 export default helpers;
 
 function defineHelper(str) {
-  return template(str, { sourceType: "module" });
+  return template(str);
 }
 
 helpers.typeof = defineHelper(`

packages/babel-helpers/test/helpers/define-helper.js

@@ -17,7 +17,7 @@ export default function defineHelper(
     throw new Error(`The ${id} helper is already defined.`);
   }
   Object.defineProperty(helpers, id, {
-    value: template(code, { sourceType: "module" }),
+    value: template(code),
   });
   return id;
 }

packages/babel-template/src/index.js

@@ -129,6 +129,7 @@ function factory(code: string, opts?: Object): Function {
       allowReturnOutsideFunction: true,
       allowSuperOutsideMethod: true,
       preserveComments: false,
+      sourceType: "module",
     },
     opts,
   );

packages/babel-template/test/index.js

@@ -5,18 +5,18 @@ import chai from "chai";
 const comments = "// Sum two numbers\nconst add = (a, b) => a + b;";
 
 describe("templating", function() {
-  it("import statement will cause parser to throw by default", function() {
+  it("import statements are allowed by default", function() {
     chai
       .expect(function() {
         template("import foo from 'foo'")({});
       })
-      .to.throw();
+      .not.to.throw();
   });
 
-  it("import statements are allowed with sourceType: module", function() {
+  it("with statements are allowed with sourceType: script", function() {
     chai
       .expect(function() {
-        template("import foo from 'foo'", { sourceType: "module" })({});
+        template("with({}){}", { sourceType: "script" })({});
       })
       .not.to.throw();
   });