diff --git a/lib/meta.js b/lib/meta.js
index a08ee57..65b83e9 100644
--- a/lib/meta.js
+++ b/lib/meta.js
@@ -1,3 +1,3 @@
 module.exports = function (str) {
-  // TODO
+  return /\.$/.test(str)
 }
\ No newline at end of file
diff --git a/lib/quantifier.js b/lib/quantifier.js
index a08ee57..152d5a0 100644
--- a/lib/quantifier.js
+++ b/lib/quantifier.js
@@ -1,3 +1,3 @@
 module.exports = function (str) {
-  // TODO
+  return /\d+\.jp(eg|g)$/.test(str)
 }
\ No newline at end of file
diff --git a/lib/split.js b/lib/split.js
index a08ee57..9588c04 100644
--- a/lib/split.js
+++ b/lib/split.js
@@ -1,3 +1,3 @@
 module.exports = function (str) {
-  // TODO
+  return str.split(/\s*,\s*/)
 }
\ No newline at end of file