MZC/KnowMathBot/frontend/node_modules/property-information/lib/util/defined-info.js

/**
 * @import {Space} from 'property-information'
 */

import {Info} from './info.js'
import * as types from './types.js'

const checks = /** @type {ReadonlyArray<keyof typeof types>} */ (
  Object.keys(types)
)

export class DefinedInfo extends Info {
  /**
   * @constructor
   * @param {string} property
   *   Property.
   * @param {string} attribute
   *   Attribute.
   * @param {number | null | undefined} [mask]
   *   Mask.
   * @param {Space | undefined} [space]
   *   Space.
   * @returns
   *   Info.
   */
  constructor(property, attribute, mask, space) {
    let index = -1

    super(property, attribute)

    mark(this, 'space', space)

    if (typeof mask === 'number') {
      while (++index < checks.length) {
        const check = checks[index]
        mark(this, checks[index], (mask & types[check]) === types[check])
      }
    }
  }
}

DefinedInfo.prototype.defined = true

/**
 * @template {keyof DefinedInfo} Key
 *   Key type.
 * @param {DefinedInfo} values
 *   Info.
 * @param {Key} key
 *   Key.
 * @param {DefinedInfo[Key]} value
 *   Value.
 * @returns {undefined}
 *   Nothing.
 */
function mark(values, key, value) {
  if (value) {
    values[key] = value
  }
}