First build

node_modules/boolean/lib/boolean.ts

@@ -0,0 +1,17 @@
+const boolean = function (value: any): boolean {
+  switch (Object.prototype.toString.call(value)) {
+    case '[object String]':
+      return [ 'true', 't', 'yes', 'y', 'on', '1' ].includes(value.trim().toLowerCase());
+
+    case '[object Number]':
+      return value.valueOf() === 1;
+
+    case '[object Boolean]':
+      return value.valueOf();
+
+    default:
+      return false;
+  }
+};
+
+export { boolean };