epaew/eslint-plugin-filenames-simple

import { getRule } from './preset-rules';

type RecommendationBuilder = (name: string) => string;

export class CaseValidator {
  readonly #expression: RegExp;
  readonly #ignorePatterns: RegExp[];
  readonly #recommendationBuilder: RecommendationBuilder;

  constructor(
    expression: RegExp,
    ignorePatterns: RegExp[],
    recommendationBuilder: RecommendationBuilder = () => {
      throw new Error('Not implemented');
    }
  ) {
    this.#expression = expression;
    this.#ignorePatterns = ignorePatterns;
    this.#recommendationBuilder = recommendationBuilder;
  }

  getRecommendedName(name: string): string {
    const recommendedName = this.#recommendationBuilder(name);
    if (this.#expression.test(recommendedName)) return recommendedName;

    throw new Error('Failed to build recommendation.');
  }

  validate(name: string): boolean {
    if (this.#ignorePatterns.some(re => re.test(name))) return true;

    return this.#expression.test(name);
  }
}

export const getCaseValidator = (ruleName: string, ignorePattern: string[] = []): CaseValidator => {
  const { expression, recommendationBuilder } = getRule(ruleName);
  return new CaseValidator(
    expression,
    ignorePattern.map(pattern => new RegExp(`^${pattern}$`)),
    recommendationBuilder
  );
};