adding grouping of text, this fixed issue #4 tested.

Author: mientjan

bin/astTester.js

@@ -162,6 +162,13 @@ With a reference later in the document defining the URL location:
 
 [id]: https://octodex.github.com/images/dojocat.jpg  "The Dojocat"
 `;
+
+const markdownText2 = ` # Syntax Support
+
+__Advertisement :)__
+
+This is a text. Click [here](https://google.com) to open a link. Let's add some more text to see how this behaves.`;
+
 /**
  * i'm overriding the default h1 render function.
  */

example/App.js

@@ -1,10 +1,10 @@
 {
   "name": "example",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "private": true,
   "devDependencies": {
-    "react-native-scripts": "0.0.50",
     "jest-expo": "~18.0.0",
+    "react-native-scripts": "0.0.50",
     "react-test-renderer": "16.0.0-alpha.12"
   },
   "main": "./node_modules/react-native-scripts/build/bin/crna-entry.js",
@@ -22,6 +22,6 @@
     "expo": "^18.0.3",
     "react": "16.0.0-alpha.12",
     "react-native": "^0.45.1",
-    "react-native-markdown-renderer": "^1.3.3"
+    "react-native-markdown-renderer": "git+https://github.com/mientjan/react-native-markdown-renderer.git#feature/grouping-of-text-nodes"
   }
 }

example/package.json

@@ -5,15 +5,15 @@ const textTypes = [
 	'a',
 	's',
 	'em',
-	'h1',
-	'h2',
-	'h3',
-	'h4',
-	'h5',
-	'h6',
-	'h7',
-	'h8',
-	'h9',
+	// 'h1',
+	// 'h2',
+	// 'h3',
+	// 'h4',
+	// 'h5',
+	// 'h6',
+	// 'h7',
+	// 'h8',
+	// 'h9',
 	'br',
 ];
 
@@ -22,6 +22,6 @@ const textTypes = [
  * @param node
  * @return {boolean}
  */
-function getIsTextType(type) {
+export default function getIsTextType(type) {
 	return textTypes.indexOf(type) > -1;
 }

lib/util/createToken.js

@@ -1,5 +1,5 @@
 import getIsTextType from './getIsTextType';
-import Token from "./Token";
+import Token from './Token';
 
 class Stack {
   constructor() {
@@ -16,45 +16,20 @@ class Stack {
 export default function groupTextTokens(tokens) {
   const result = [];
 
-  if (!tokens) {
-    return result;
-  }
-
-  let currentStack = new Stack();
-  const stacks = [];
-
-  for (var i = 0; i < tokens.length; i++) {
-    const token = tokens[i];
-
-    if (getIsTextType(token.tag || token.type)) {
-      if (token.nesting === 1) {
-        currentStack.add(token);
-        stacks.push(currentStack);
-        currentStack = new Stack();
-      } else if (token.nesting === -1) {
-        currentStack.add(token);
-        currentStack = stacks.pop();
-      } else if (token.nesting === 0) {
-        currentStack.add(token);
-      }
-    } else {
-      if (currentStack.count > 1) {
-        result.push(new Token('textgroup', 1));
-
-        while (currentStack.data.length) {
-          result.push(currentStack.data.shift());
-        }
-
-        result.push(new Token('textgroup', -1));
-      } else if (currentStack.count === 1) {
-        while (currentStack.data.length) {
-          result.push(currentStack.data.shift());
-        }
-      }
+  let hasGroup = false;
+  tokens.forEach(token => {
+    if (getIsTextType(token.tag || token.type) && !hasGroup) {
+      hasGroup = true;
+      result.push(new Token('textgroup', 1));
+    }
 
-      result.push(token);
+    if (!getIsTextType(token.tag || token.type) && hasGroup) {
+      hasGroup = false;
+      result.push(new Token('textgroup', -1));
     }
-  }
+
+    result.push(token);
+  });
 
   return result;
 }