visitClassDeclaration()

in tools/tslint-rules/noHostDecoratorInConcreteRule.ts [11:36]

• 22 lines of code
• 5 McCabe index (conditional complexity)

  visitClassDeclaration(node: ts.ClassDeclaration) {
    if (!node.modifiers || !this.getOptions().length) { return; }

    // Do not check the class if its abstract.
    if (!!node.modifiers.find(modifier => modifier.kind === ts.SyntaxKind.AbstractKeyword)) {
      return;
    }

    node.members
      .filter(el => el.decorators)
      .map(el => el.decorators!)
      .forEach(decorators => {
        decorators.forEach(decorator => {
          const decoratorText: string = decorator.getChildAt(1).getText();
          const matchedDecorator: string = this.getOptions().find(
            (item: string) => decoratorText.startsWith(item));
          if (!!matchedDecorator) {
            this.addFailureFromStartToEnd(decorator.getChildAt(1).pos - 1, decorator.end,
              `The @${matchedDecorator} decorator may only be used in abstract classes. In ` +
              `concrete classes use \`host\` in the component definition instead.`);
          }
        });
      });

    super.visitClassDeclaration(node);
  }