Acme.BookStore.HttpApi.Host/node_modules/luxon/src/impl/invalid.js

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export default class Invalid {
  constructor(reason, explanation) {
    this.reason = reason;
    this.explanation = explanation;
  }

  toMessage() {
    if (this.explanation) {
      return `${this.reason}: ${this.explanation}`;
    } else {
      return this.reason;
    }
  }
}