first commit

node_modules/lottie-web/tasks/watch.js

@@ -0,0 +1,34 @@
+var childProcess = require('child_process');
+var watch = require('watch')
+
+function runScript(scriptPath, processArguments, callback) {
+
+    // keep track of whether callback has been invoked to prevent multiple invocations
+    var invoked = false;
+
+    var process = childProcess.fork(scriptPath, processArguments);
+
+    // listen for errors as they may prevent the exit event from firing
+    process.on('error', function (err) {
+        if (invoked) return;
+        invoked = true;
+        callback(err);
+    });
+
+    // execute the callback once the process has finished running
+    process.on('exit', function (code) {
+        if (invoked) return;
+        invoked = true;
+        var err = code === 0 ? null : new Error('exit code ' + code);
+        callback(err);
+    });
+
+}
+
+
+  watch.watchTree(`${__dirname}\\..\\player\\js\\`, function (f, curr, prev) {
+    runScript(`${__dirname}\\build.js`, ["reduced"], function (err) {
+        if (err) throw err;
+        console.log('finished running some-script.js');
+    });
+  })