feat(guide): Import guide in to the client app

client/utils/titleify.js

@@ -0,0 +1,72 @@
+const { preFormatted, stopWords } = require('./formatting');
+
+const prototypeRE = /prototype/i;
+const prototypesRE = /prototypes/i;
+
+const removeProto = x => x !== 'prototype';
+
+function titleCase(word) {
+  return word[0].toUpperCase() + word.slice(1);
+}
+
+function prototyper(str) {
+  const formatted = str
+    .replace(/javascript/i, '')
+    .split('-')
+    .map(str => {
+      if (prototypeRE.test(str)) {
+        if (str.length > 9) {
+          return prototyper(
+            str.trim().split('prototype').join('-prototype-')
+          );
+        }
+        return str;
+      }
+      return titleify(str);
+    })
+    .join(' ')
+    .split(' ');
+  const noProto = formatted
+    .filter(removeProto)
+    .filter(x => !!x);
+  if (noProto.length === 2) {
+    const [ first, second ] = noProto;
+    const secondLC = second.toLowerCase();
+    const finalSecond = preFormatted[secondLC] ?
+      preFormatted[secondLC] :
+      secondLC;
+    return `${titleify(first)}.prototype.${finalSecond}`;
+  }
+  if (noProto.length === 1) {
+    return prototyper(
+      noProto[0]
+        .toLowerCase()
+        .split('.')
+        .join('-')
+      );
+  }
+  return titleify(str, true);
+}
+
+function titleify(str, triedPrototyper) {
+  if (str.match(prototypeRE) && !triedPrototyper && !prototypesRE.test(str)) {
+    return prototyper(str);
+  }
+  return str
+    .toLowerCase()
+    .split('-')
+    .map((word, i) => {
+      if (!word) {
+        return '';
+      }
+      if (stopWords.some(x => x === word) && i !== 0) {
+        return word;
+      }
+      return preFormatted[word] ?
+        preFormatted[word] :
+        titleCase(word);
+    })
+    .join(' ');
+}
+
+module.exports = titleify;