constructor(
    opts: $ReadOnly<{
      importSpecifier: string,
      reason: string,
    }>,
  ) {
    super(
      `The path for ${opts.importSpecifier} could not be resolved.\nReason: ` +
        opts.reason,
    );
    this.importSpecifier = opts.importSpecifier;
    this.reason = opts.reason;
  }
The description of the error cause.