Use an integer to track direction, boolean is not an sqlite3 datatype.

lib/db/index.js

@@ -14,7 +14,7 @@ class DB {
 	createTable () {
 		const query = `CREATE TABLE
 		IF NOT EXISTS ${this._table} (
-			dir BOOLEAN,
+			dir INTEGER,
 			exposure INTEGER,
 			start INTEGER,
 			stop INTEGER,

lib/intval/index.js

@@ -197,7 +197,7 @@ intval._stop = function () {
 	entry.start = intval._state.frame.start
 	entry.stop = now
 	entry.len = len
-	entry.dir = intval._state.frame.current.dir
+	entry.dir = intval._state.frame.current.dir ? 1 : 0
 	entry.exposure = intval._state.frame.current.exposure
 	entry.counter = intval._state.counter