Add Robot_JoyIt driver

node_modules/stream-chain/defs.js

@@ -0,0 +1,22 @@
+'use strict';
+
+const none = Symbol.for('object-stream.none');
+const finalSymbol = Symbol.for('object-stream.final');
+const manySymbol = Symbol.for('object-stream.many');
+
+const final = value => ({[finalSymbol]: value});
+const many = values => ({[manySymbol]: values});
+
+const isFinal = o => o && typeof o == 'object' && finalSymbol in o;
+const isMany = o => o && typeof o == 'object' && manySymbol in o;
+
+const getFinalValue = o => o[finalSymbol];
+const getManyValues = o => o[manySymbol];
+
+module.exports.none = none;
+module.exports.final = final;
+module.exports.isFinal = isFinal;
+module.exports.getFinalValue = getFinalValue;
+module.exports.many = many;
+module.exports.isMany = isMany;
+module.exports.getManyValues = getManyValues;