Merge pull request #23 from toshiwo/support_a_compatibility_with_interpolation_format_for_rails

support a compatibility with interpolation format for rails and i18n-js

Author: kazupon

src/format.js

@@ -4,7 +4,7 @@
  *    https://github.com/Matt-Esch/string-template/index.js
  */
 
-const RE_NARGS = /\{([0-9a-zA-Z]+)\}/g
+const RE_NARGS = /(%|)\{([0-9a-zA-Z]+)\}/g
 
 
 /**
@@ -24,7 +24,7 @@ export default function (string, ...args) {
     args = {}
   }
 
-  return string.replace(RE_NARGS, (match, i, index) => {
+  return string.replace(RE_NARGS, (match, prefix, i, index) => {
     let result
 
     if (string[index - 1] === '{' &&

test/specs/format.js

@@ -11,6 +11,13 @@ describe('format', () => {
           name: 'kazupon', email: 'foo@domain.com'
         }), 'name: kazupon, email: foo@domain.com')
       })
+
+      it('should be replace with object value', () => {
+        let template = 'name: %{name}, email: %{email}'
+        assert(format(template, {
+          name: 'kazupon', email: 'foo@domain.com'
+        }), 'name: kazupon, email: foo@domain.com')
+      })
     })
 
     context('Array', () => {