feat:node-modules

node_modules/mathjs/lib/esm/utils/emitter.js

@@ -0,0 +1,18 @@
+import Emitter from 'tiny-emitter';
+
+/**
+ * Extend given object with emitter functions `on`, `off`, `once`, `emit`
+ * @param {Object} obj
+ * @return {Object} obj
+ */
+export function mixin(obj) {
+  // create event emitter
+  var emitter = new Emitter();
+
+  // bind methods to obj (we don't want to expose the emitter.e Array...)
+  obj.on = emitter.on.bind(emitter);
+  obj.off = emitter.off.bind(emitter);
+  obj.once = emitter.once.bind(emitter);
+  obj.emit = emitter.emit.bind(emitter);
+  return obj;
+}