Merge pull request #11 from webKrafters/arr-to-iter

protected method - addition

Author: steveswork

docs.md

@@ -126,7 +126,9 @@ isEmpty: boolean
 ```tsx
 size: number
 ```
-## Methods
+
+## Methods (Scope: Public)
+
 ### add
 <p>Accepts a sequence of items to merge into this instance.</p>
 
@@ -288,6 +290,15 @@ Accepts sequences of items to remove from the trie. Will record the outcome of t
 removeMany(data : Array<Iterable<T>>): Array<OpStatus>
 ```
 
+## Methods (Scope: Protected)
+
+### _getNodeAtPrefixEnd
+<p>Produces the underlying node containing the final value in <code>prefix</code> items.</p>
+<p>Will produce the root node for the empty <code>prefix</code> items.</p>
+
+```tsx
+_getNodeAtPrefixEnd( prefix: Iterable<T> ): Node<T>
+```
 ## Static
 
 ### makeTrieable

package.json

@@ -59,5 +59,5 @@
     "test:watch": "jest --updateSnapshot --watchAll"
   },
   "types": "dist/index.d.ts",
-  "version": "0.5.1"
+  "version": "0.5.2"
 }

src/index.ts

@@ -1,11 +1,11 @@
 export type {
     EqualityFn, 
     KeyType,
+    Node,
     Options,
     OpStatus,
     Status,
     TrieableNode,
     TrieableNodeKeyMapping
 } from './main';
-
 export { default as default } from './main';

src/main.ts

@@ -335,9 +335,15 @@ export default class Trie<T = unknown> {
         }
         return results;
     }
+    protected _getNodeAtPrefixEnd( prefix : Iterable<T> ) {
+        const pSequence = toArray( prefix );
+        return pSequence.length
+            ? this.root.getChildPrefixEnd( pSequence )
+            : this.root;
+    }
     private _getAllStartingWith( prefix : Array<T>, completeSequencesOnly ) {
-        const suffixStartNode = this.root.getChildPrefixEnd( prefix );
-        if( !suffixStartNode ) { return [] }
+        const suffixStartNode = this._getNodeAtPrefixEnd( prefix );
+        if( !suffixStartNode || this.root === suffixStartNode ) { return [] }
         const sequences = suffixStartNode.asArray( completeSequencesOnly );
         for( let s = sequences.length; s--; ) {
             sequences[ s ] = prefix.concat( sequences[ s ] );