criticizer/src/util/selectorValidator.ts

Linting for Angular applications, following angular.io/styleguide.

export const SelectorValidator = {

  attribute(selector: string): boolean {
    return selector.length !== 0;
  },

  element(selector: string): boolean {
    return selector !== null;
  },

  kebabCase(selector: string): boolean {
    return /^[a-z0-9\-]+\-[a-z0-9\-]+$/.test(selector);
  },

  camelCase(selector: string): boolean {
    return /^[a-zA-Z0-9\[\]]+$/.test(selector);
  },

  prefix(prefix: string, selectorType: string): Function {
    const regex = new RegExp(`^\\[?(${prefix})`);
    return (selector: string) => {
      if (!prefix) {
        return true;
      }
      if (!regex.test(selector)) {
        return false;
      } else {
        const suffix = selector.replace(regex, '');
        if (selectorType === 'camelCase') {
          return !suffix || suffix[0] === suffix[0].toUpperCase();
        } else if (selectorType === 'kebab-case') {
          return !suffix || suffix[0] === '-';
        } else {
          throw new Error('Invalid selector type');
        }
      }
    };
  }
};