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Make arraysEqual avoid mutating the input arrays #3506

merged 1 commit into from Oct 4, 2019


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commented Oct 1, 2019

Please describe the changes this PR makes and why it should be merged:

Targetting 11.5-dev

This method causes bugs where it is used because it mutates the array.

  1. Comparing guilds with Guild#equals may mutate the guild features array causing it to be inaccurate. (fixed for master in #2544)
  2. Comparing GuildMember._roles with each other may mutate the underlying roles array which causes the oldMember parameter for the guildMemberUpdate event to have inaccurate roles.


  • Code changes have been tested against the Discord API, or there are no code changes
  • I know how to update typings and have done so, or typings don't need updating

Semantic versioning classification:

  • This PR changes the library's interface (methods or parameters added)
    • This PR includes breaking changes (methods removed or renamed, parameters moved or removed)
  • This PR only includes non-code changes, like changes to documentation, README, etc.
@SpaceEEC SpaceEEC merged commit 8ddd061 into discordjs:11.5-dev Oct 4, 2019
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