webchat-front/node_modules/js-yaml/doc/gotchas.md

Gotchas and Kludges

Expose class properties into instance

Example:

function BaseConstructor() {
  // ...
  this.yamlConstructors = BaseConstructor.yamlConstructors;
  // ...
}

BaseConstructor.yamlConstructors = {};

Some of instance methods needs access to "class properties". Normally we would use:

Foo.prototype.bar = function bar(key) {
  return this.constructor.yamlConstructors[key];
}

And this will work, if you will work ONLY with Foo or its childs. But we glue modules (like SafeConstructor, Resolver, Composer, etc.) together via Loader. So we call BaseResolver#resolve via Resolver from within Loader instance. So this.constructor in the exampe above will be Loader() and not Resolver as we might expect it.