Refactor template.js

Added:
- Function `resolve()` to process any template tags (in a string) in objects and arrays.

Changed:
- Renamed function `template()` to `resolveValue()`.
- Replaced default export `resolveValue()` with new function `resolve()`.

build/utils/template.js

@@ -14,17 +14,53 @@ const templateData = flatten({
  * If replacement pairs contain a mix of substrings, regular expressions,
  * and functions, regular expressions are executed last.
  *
- * @param  {string} input - The string being searched and replaced on.
- * @param  {object} data  - An object in the form `{ 'from': 'to', … }`.
+ * @param  {*}      input  - The value being searched and replaced on.
+ *     If input is, or contains, a string, tags will be resolved.
+ *     If input is, or contains, an object, it is mutated directly.
+ *     If input is, or contains, an array, a shallow copy is returned.
+ *     Otherwise, the value is left intact.
+ * @param  {object} [data] - An object in the form `{ 'from': 'to', … }`.
+ * @return {*} Returns the transformed value.
+ */
+export default function resolve(input, data = templateData) {
+    switch (typeof input) {
+        case 'string': {
+            return resolveValue(input, data);
+        }
+
+        case 'object': {
+            if (input == null) {
+                break;
+            }
+
+            if (Array.isArray(input)) {
+                return input.map((value) => resolve(value, data));
+            } else {
+                for (const key in input) {
+                    input[key] = resolve(input[key], data);
+                }
+            }
+        }
+    }
+
+    return input;
+}
+
+/**
+ * Replaces all template tags in a string from a map of keys and values.
+ *
+ * If replacement pairs contain a mix of substrings, regular expressions,
+ * and functions, regular expressions are executed last.
+ *
+ * @param  {string} input  - The string being searched and replaced on.
+ * @param  {object} [data] - An object in the form `{ 'from': 'to', … }`.
  * @return {string} Returns the translated string.
  */
-export default function template(input, data) {
+export function resolveValue(input, data = templateData) {
     const tags = [];
 
-    if (data) {
+    if (data !== templateData) {
         data = flatten(data);
-    } else {
-        data = templateData;
     }
 
     for (let tag in data) {
@@ -55,7 +91,7 @@ export default function template(input, data) {
 
         return '';
     });
-};
+}
 
 /**
  * Creates a new object with all nested object properties