feat: finish migrating to react renderer

.gitignore

@@ -2,3 +2,4 @@
 node_modules
 output
 test/temp
+__transpiled

helper/index.js

@@ -0,0 +1,44 @@
+const _ = require('lodash');
+const sanitizeFilename = require('sanitize-filename');
+
+function camelCase(string) {
+  return _.camelCase(string);
+}
+
+function pascalCase(string) {
+  string = _.camelCase(string);
+  return string.charAt(0).toUpperCase() + string.slice(1);
+}
+
+function kebabCase(string) {
+  return _.kebabCase(string);
+}
+
+function capitalize(string) {
+  return _.capitalize(string);
+}
+
+function oneLine(string) {
+  return string.replace(/\n/g, ' ').trim();
+}
+
+function convertToFilename(string, options = { replacement: '-', maxLength: 255 }) {
+  let sanitizedString = sanitizeFilename(string);
+
+  sanitizedString = sanitizedString.replace(/[\s]+/g, options.replacement);
+
+  if (sanitizedString.length > options.maxLength) {
+    sanitizedString = sanitizedString.slice(0, options.maxLength);
+  }
+
+  return sanitizedString;
+}
+
+module.exports = {
+  camelCase,
+  pascalCase,
+  kebabCase,
+  capitalize,
+  oneLine,
+  convertToFilename
+};