1 files changed, 16 insertions, 0 deletions
diff --git a/llparse-frontend/src/trie/single.ts b/llparse-frontend/src/trie/single.ts
new file mode 100644
index 0000000..c984af0
--- /dev/null
+++ b/llparse-frontend/src/trie/single.ts
@@ -0,0 +1,16 @@
+import { node as api } from 'llparse-builder';
+import { TrieEmpty } from './empty';
+import { TrieNode } from './node';
+
+export interface ITrieSingleChild {
+  readonly key: number;
+  readonly noAdvance: boolean;
+  readonly node: TrieNode;
+}
+
+export class TrieSingle extends TrieNode {
+  constructor(public readonly children: ReadonlyArray<ITrieSingleChild>,
+              public readonly otherwise: TrieEmpty | undefined) {
+    super();
+  }
+}