class_ex.ts

export class Class {
  // ...
  private baseNode(skipDeprecatedProperties: boolean, context: Context):
      TypeNode {
    // ...
    const parentNode = /* ... */;
    const isRoot = parentNode === null;

    const propLiteral = createTypeLiteralNode([
      // Add an '@id' property for the root.
      ...(isRoot ? [IdPropertyNode()] : []),
      // ... then everything else.
      ...this.properties()
         .filter(property => !property.deprecated || !skipDeprecatedProperties)
         .map(prop => prop.toNode(context))
    ]);

    if (parentNode && propLiteral.members.length > 0) {
      return createIntersectionTypeNode([parentNode, propLiteral]);
    } else if (parentNode) {
      return parentNode;
    } else if (propLiteral.members.length > 0) {
      return propLiteral;
    } else {
      return createTypeLiteralNode([]);
    }
  }
}