1 files changed, 29 insertions, 0 deletions
diff --git a/src/ljstype.js b/src/ljstype.js
new file mode 100644
index 0000000..a92c8d0
--- /dev/null
+++ b/src/ljstype.js
@@ -0,0 +1,29 @@
+"use strict";
+
+const assert = require('assert');
+
+const lisdigit = function(c) {
+    return /^\d$/.test(c.charAt(0));
+};
+
+const lisxdigit = function(c) {
+    return /^[0-9a-fA-F]$/.test(c.charAt(0));
+};
+
+const lisspace = function(c) {
+    return /^\s$/.test(c.charAt(0));
+};
+
+const lislalpha = function(c) {
+    return /^[_a-zA-z]$/.test(c.charAt(0));
+};
+
+const lislalnum = function(c) {
+    return /^[_a-zA-z0-9]$/.test(c.charAt(0));
+};
+
+module.exports.lisdigit   = lisdigit;
+module.exports.lislalnum  = lislalnum;
+module.exports.lislalpha  = lislalpha;
+module.exports.lisspace   = lisspace;
+module.exports.lisxdigit  = lisxdigit;
+\ No newline at end of file