cloudfunctions/SegmentPortraitPic/node_modules/bson/src/objectid.ts

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import { Buffer } from 'buffer';
import { ensureBuffer } from './ensure_buffer';
import { BSONTypeError } from './error';
import { deprecate, isUint8Array, randomBytes } from './parser/utils';

// Regular expression that checks for hex value
const checkForHexRegExp = new RegExp('^[0-9a-fA-F]{24}$');

// Unique sequence for the current process (initialized on first use)
let PROCESS_UNIQUE: Uint8Array | null = null;

/** @public */
export interface ObjectIdLike {
  id: string | Buffer;
  __id?: string;
  toHexString(): string;
}

/** @public */
export interface ObjectIdExtended {
  $oid: string;
}

const kId = Symbol('id');

/**
 * A class representation of the BSON ObjectId type.
 * @public
 */
export class ObjectId {
  _bsontype!: 'ObjectId';

  /** @internal */
  static index = Math.floor(Math.random() * 0xffffff);

  static cacheHexString: boolean;

  /** ObjectId Bytes @internal */
  private [kId]: Buffer;
  /** ObjectId hexString cache @internal */
  private __id?: string;

  /**
   * Create an ObjectId type
   *
   * @param inputId - Can be a 24 character hex string, 12 byte binary Buffer, or a number.
   */
  constructor(inputId?: string | number | ObjectId | ObjectIdLike | Buffer | Uint8Array) {
    if (!(this instanceof ObjectId)) return new ObjectId(inputId);

    // workingId is set based on type of input and whether valid id exists for the input
    let workingId;
    if (typeof inputId === 'object' && inputId && 'id' in inputId) {
      if (typeof inputId.id !== 'string' && !ArrayBuffer.isView(inputId.id)) {
        throw new BSONTypeError(
          'Argument passed in must have an id that is of type string or Buffer'
        );
      }
      if ('toHexString' in inputId && typeof inputId.toHexString === 'function') {
        workingId = Buffer.from(inputId.toHexString(), 'hex');