fix(caret): right-arrow on last non-default block (#1416)

* fix(caret): last non-default block navigation won't craete a new block untill reaching the end

* reuse variable

docs/CHANGELOG.md

@@ -6,7 +6,7 @@
 - `Fix` - add getter keyword to `block.mergeable` method [#1415](https://github.com/codex-team/editor.js/issues/1415).
 - `Fix` — Fix problem with entering to Editor.js by Tab key [#1393](https://github.com/codex-team/editor.js/issues/1393)
 - `Fix` - Sanitize pasted block data [#1396](https://github.com/codex-team/editor.js/issues/1396).
-
+- `Fix` - Unnecessary block creation after arrow navigation at last non-default block[#1414](https://github.com/codex-team/editor.js/issues/1414)
 
 ### 2.19
 

src/components/modules/caret.ts

@@ -396,14 +396,22 @@ export default class Caret extends Module {
     const { BlockManager, Tools } = this.Editor;
     const { currentBlock, nextContentfulBlock } = BlockManager;
     const { nextInput } = currentBlock;
+    const isAtEnd = this.isAtEnd;
 
     let nextBlock = nextContentfulBlock;
 
     if (!nextBlock && !nextInput) {
       /**
-       * If there is no nextBlock and currentBlock is default, do not navigate
+       * This code allows to exit from the last non-initial tool:
+       * https://github.com/codex-team/editor.js/issues/1103
        */
-      if (Tools.isDefault(currentBlock.tool)) {
+
+      /**
+       * 1. If there is a last block and it is default, do nothing
+       * 2. If there is a last block and it is non-default --> and caret not at the end <--, do nothing
+       *    (https://github.com/codex-team/editor.js/issues/1414)
+       */
+      if (Tools.isDefault(currentBlock.tool) || !isAtEnd) {
         return false;
       }
 
@@ -414,7 +422,7 @@ export default class Caret extends Module {
       nextBlock = BlockManager.insertAtEnd();
     }
 
-    if (force || this.isAtEnd) {
+    if (force || isAtEnd) {
       /** If next Tool`s input exists, focus on it. Otherwise set caret to the next Block */
       if (!nextInput) {
         this.setToBlock(nextBlock, this.positions.START);