Move template literal logic into its extractor.

No need to separate logic here. It makes the code less readable.

Author: beefancohen

src/util/buildTemplateLiteral.js

@@ -1,5 +1,30 @@
-import buildTemplateLiteral from '../../buildTemplateLiteral';
+/**
+ * Returns the string value of a template literal object.
+ * Tries to build it as best as it can based on the passed
+ * prop. For instance `This is a ${prop}` will return 'This is a {prop}'.
+ *
+ * If the template literal builds to undefined (`${undefined}`), then
+ * this should return "".
+ */
+const extract = value => {
+  const {
+    quasis,
+    expressions
+  } = value;
+  const partitions = quasis.concat(expressions);
 
-const extract = value => buildTemplateLiteral(value);
+  return partitions.sort((a, b) => a.start - b.start).reduce((raw, part) => {
+    const {
+      type
+    } = part;
+    if (type === 'TemplateElement') {
+      return raw + part.value.raw;
+    } else if (type === 'Identifier') {
+      return part.name === 'undefined' ? raw : `${raw}{${part.name}}`;
+    }
+
+    return raw;
+  }, '');
+};
 
 export default extract;