Initial commit

lib/core/toSlug.js

@@ -0,0 +1,48 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+module.exports = string => {
+  //  var accents = "àáäâèéëêìíïîòóöôùúüûñç";
+  const accents = '\u00e0\u00e1\u00e4\u00e2\u00e8'
+    + '\u00e9\u00eb\u00ea\u00ec\u00ed\u00ef'
+    + '\u00ee\u00f2\u00f3\u00f6\u00f4\u00f9'
+    + '\u00fa\u00fc\u00fb\u00f1\u00e7';
+
+  const without = 'aaaaeeeeiiiioooouuuunc';
+
+  let slug = string
+    .toString()
+
+    // Handle uppercase characters
+    .toLowerCase()
+
+    // Handle accentuated characters
+    .replace(
+      new RegExp('[' + accents + ']', 'g'),
+      c => { return without.charAt(accents.indexOf(c)); })
+
+    // Replace `.`, `(` and `?` with blank string like Github does
+    .replace(/\.|\(|\?/g, '')
+
+    // Dash special characters
+    .replace(/[^a-z0-9]/g, '-')
+
+    // Compress multiple dash
+    .replace(/-+/g, '-')
+
+    // Trim dashes
+    .replace(/^-|-$/g, '');
+
+  // Add trailing `-` if string contains ` ...` in the end like Github does
+  if (/\s[.]{1,}/.test(string)) {
+    slug += '-';
+  }
+
+  return slug;
+};