Repository: discordjs/discord.js
File: src/structures/ThreadChannel.js (JavaScript)

Code before:
  /**
   * Whether the thread is editable by the client user (name, archived, autoArchiveDuration)
   * @type {boolean}
   * @readonly
   */
  get editable() {
    return (
      (this.ownerId === this.client.user.id && (this.type !== 'GUILD_PRIVATE_THREAD' || this.joined)) || this.manageable
    );
  }

  /**
   * Whether the thread is joinable by the client user
   * @type {boolean}
   * @readonly
   */
  get joinable() {
    const permissions = this.permissionsFor(this.client.user);
    if (!permissions) return false;
    // This flag allows joining even if timed out
    if (permissions.has(Permissions.FLAGS.ADMINISTRATOR, false)) return true;

    return (
      !this.archived &&
      !this.joined &&
      this.permissionsFor(this.client.user).has(
        this.type === 'GUILD_PRIVATE_THREAD' ? Permissions.FLAGS.MANAGE_THREADS : Permissions.FLAGS.VIEW_CHANNEL,
        false,
      ) &&
      this.guild.me.communicationDisabledUntilTimestamp < Date.now()
    );
  }

  /**
   * Whether the thread is manageable by the client user, for deleting or editing rateLimitPerUser or locked.
   * @type {boolean}
   * @readonly
   */
  get manageable() {
    const permissions = this.permissionsFor(this.client.user);
    if (!permissions) return false;
    // This flag allows managing even if timed out
    if (permissions.has(Permissions.FLAGS.ADMINISTRATOR, false)) return true;
    if (!permissions.has(Permissions.FLAGS.MANAGE_THREADS, false)) return false;
    return this.guild.me.communicationDisabledUntilTimestamp < Date.now();
  }

  /**
   * Whether the thread is viewable by the client user
   * @type {boolean}
   * @readonly

Review comment (security):
It's already retrieved from above, we don't need to run it twice.
```suggestion
      permissions.has(
```

Code after:
  /**
   * Whether the thread is editable by the client user (name, archived, autoArchiveDuration)
   * @type {boolean}
   * @readonly
   */
  get editable() {
    return (
      (this.ownerId === this.client.user.id && (this.type !== 'GUILD_PRIVATE_THREAD' || this.joined)) || this.manageable
    );
  }

  /**
   * Whether the thread is joinable by the client user
   * @type {boolean}
   * @readonly
   */
  get joinable() {
    return (
      !this.archived &&
      !this.joined &&
      this.permissionsFor(this.client.user)?.has(
        this.type === 'GUILD_PRIVATE_THREAD' ? Permissions.FLAGS.MANAGE_THREADS : Permissions.FLAGS.VIEW_CHANNEL,
        false,
      )
    );
  }

  /**
   * Whether the thread is manageable by the client user, for deleting or editing rateLimitPerUser or locked.
   * @type {boolean}
   * @readonly
   */
  get manageable() {
    const permissions = this.permissionsFor(this.client.user);
    if (!permissions) return false;
    // This flag allows managing even if timed out
    if (permissions.has(Permissions.FLAGS.ADMINISTRATOR, false)) return true;

    return (
      this.guild.me.communicationDisabledUntilTimestamp < Date.now() &&
      permissions.has(Permissions.FLAGS.MANAGE_THREADS, false)
    );
  }

  /**
   * Whether the thread is viewable by the client user
   * @type {boolean}
   * @readonly
   */
  get viewable() {
    if (this.client.user.id === this.guild.ownerId) return true;