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import { BaseOperator } from "./base.ts";import pick from "https://deno.land/x/lodash@4.17.15-es/pick.js";
export class PrimitiveOperator<Op> extends BaseOperator<Op> {  constructor(data: Op) {    super(data);
    if (Array.isArray(data)) {      throw new Error(        "[casualdb] PrimitiveOperator; initialized with a value that is an array.",      );    }  }
  update<T = Op>(    updateMethod: (currentValue: Op) => T,  ): PrimitiveOperator<ReturnType<typeof updateMethod>> {    return new PrimitiveOperator<ReturnType<typeof updateMethod>>(      updateMethod(this.data),    );  }
  pick<U extends keyof Op>(paths: Array<U>) {    const picked = pick(this.data, ...paths) as { [P in U]: Op[P] };    return new PrimitiveOperator<{ [P in U]: Op[P] }>(picked);  }}