flow like the river

VISUALIZACION/node_modules/falafel/test/es6.js

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+var falafel = require('../');
+var test = require('tape');
+var semver = require('semver');
+
+// it runs the generator so needs node 4+
+test('generators', { skip: semver.satisfies(process.version, '< 4.0.0') }, function (t) {
+    t.plan(1);
+    
+    var src = 'console.log((function * () { yield 3 })().next().value)';
+    var output = falafel(src, { ecmaVersion: 6 }, function (node) {
+        if (node.type === 'Literal') {
+            node.update('555');
+        }
+    });
+    Function(['console'],output)({log:log});
+    function log (n) { t.equal(n, 555) }
+});