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[GH-ISSUE #207] When using "mutations" with a subscription it's throwing a warning #98

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opened 2026-05-23 08:30:27 -06:00 by gitea-mirror · 5 comments

gitea-mirror commented

2026-05-23 08:30:27 -06:00

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Originally created by @diogomartino on GitHub (Mar 11, 2023).
Original GitHub issue: https://github.com/appy-one/acebase/issues/207

Originally assigned to: @appy-one on GitHub.

Hi! First of all, thanks for your work, this lib is awesome. I'm using NodeJS v18.7.0 with AceBase 1.27.0.

I'm trying to execute something when some specific props of an object change, and I'm trying to use subscriptions for this. But, while using code from the documentation, it's throwing a warning in the console:

  db.ref(`messages/${message.id}`).on('mutations', (snapshots) => {
    snapshots.forEach((snapshot) => {
      console.log('snapshot', snapshot.val());
    });
  });

It's throwing:
Unless you know what you are doing, it is best not to use the value of a mutations snapshot directly. Use child methods and forEach to iterate the mutations instead

What am I doing wrong? The lack of examples when using the "mutations" is making me quite confused, if that part could be improved it would be great.

Thanks!

Originally created by @diogomartino on GitHub (Mar 11, 2023). Original GitHub issue: https://github.com/appy-one/acebase/issues/207 Originally assigned to: @appy-one on GitHub. Hi! First of all, thanks for your work, this lib is awesome. I'm using NodeJS `v18.7.0` with AceBase `1.27.0`. I'm trying to execute something when some specific props of an object change, and I'm trying to use subscriptions for this. But, while using code from the documentation, it's throwing a warning in the console: ```javascript db.ref(`messages/${message.id}`).on('mutations', (snapshots) => { snapshots.forEach((snapshot) => { console.log('snapshot', snapshot.val()); }); }); ``` It's throwing: `Unless you know what you are doing, it is best not to use the value of a mutations snapshot directly. Use child methods and forEach to iterate the mutations instead` What am I doing wrong? The lack of examples when using the "mutations" is making me quite confused, if that part could be improved it would be great. Thanks!

gitea-mirror

2026-05-23 08:30:27 -06:00

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gitea-mirror commented

2026-05-23 08:30:34 -06:00

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@appy-one commented on GitHub (Mar 13, 2023):

Hi @diogomartino, thanks for reporting this. Kindly note that it is NOT throwing anything, it only logs a warning message to the console. In your case, it should not do this (you are using forEach so that should be good). I checked the code and think I found the issue, I'll fix it asap!

@appy-one commented on GitHub (Mar 13, 2023): Hi @diogomartino, thanks for reporting this. Kindly note that it is NOT throwing anything, it only logs a warning message to the console. In your case, it should not do this (you are using `forEach` so that should be good). I checked the code and think I found the issue, I'll fix it asap!

gitea-mirror commented

2026-05-23 08:30:35 -06:00

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@diogomartino commented on GitHub (Mar 13, 2023):

Oh yes, I meant throwing as like a logging term, not like throwing an exception, you are correct. Thanks for seeing this 👍

@diogomartino commented on GitHub (Mar 13, 2023): Oh yes, I meant throwing as like a logging term, not like throwing an exception, you are correct. Thanks for seeing this 👍

gitea-mirror commented

2026-05-23 08:30:35 -06:00

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@appy-one commented on GitHub (Apr 11, 2023):

@diogomartino I fixed this in acebase-core v1.26.1, I'll publish a new acebase package shortly

@appy-one commented on GitHub (Apr 11, 2023): @diogomartino I fixed this in `acebase-core` v1.26.1, I'll publish a new `acebase` package shortly

gitea-mirror commented

2026-05-23 08:30:37 -06:00

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@appy-one commented on GitHub (Apr 11, 2023):

@diogomartino Fix has been published in https://github.com/appy-one/acebase/releases/tag/v1.28.0

@appy-one commented on GitHub (Apr 11, 2023): @diogomartino Fix has been published in https://github.com/appy-one/acebase/releases/tag/v1.28.0 [![Sponsor AceBase](https://user-images.githubusercontent.com/26569719/168233053-8e56b243-4140-40ab-9a30-4cb3cc149bfe.svg)](https://github.com/sponsors/appy-one) [![Spread the word](https://user-images.githubusercontent.com/26569719/169265089-3d593555-e1ad-4390-986b-877ac2c38a47.svg)](https://twitter.com/intent/tweet?button=&url=https://github.com/appy-one/acebase&text=I'm+using+@AcebaseRealtime+in+my+project+to+make+my+life+easier!&button=) [![contribute](https://user-images.githubusercontent.com/26569719/169265318-30c4c6a5-7c89-46a0-a7a2-ef433a8192f4.svg)](https://github.com/appy-one/acebase#contributing)

gitea-mirror commented

2026-05-23 08:30:39 -06:00

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@diogomartino commented on GitHub (Apr 15, 2023):

Thank you🙏

@diogomartino commented on GitHub (Apr 15, 2023): Thank you🙏