PutBucketLifecycleConfiguration: "Filter" is always required and should be a non-empty object ?

[SanjalKatiyar]

Hi,
I am trying to create a bucket lifecycle rule (S3 SDK version: "@aws-sdk/client-s3": "3.667.0") which applies to all the objects of the bucket. I tried specifying "Filter": {} (please check the snippet below).

this.send(new PutBucketLifecycleConfigurationCommand({
   Bucket: bucketName,
   LifecycleConfiguration: {
     Rules: {
       "Expiration": {
           "Days": 5
         },
         "ID": "testrule",
         "Filter": {},
         "Status": "Enabled"
     },
   },
});

But, above syntax threw a TypeError:

TypeError: Cannot read properties of undefined (reading '0')
    at LifecycleRuleFilter.visit (models_0.js:363:40)
    at se_LifecycleRuleFilter (Aws_restXml.js:4611:71)
    at se_LifecycleRule (Aws_restXml.js:4582:14)
    at eval (Aws_restXml.js:4650:19)
    at Array.map (<anonymous>)
    at se_LifecycleRules (Aws_restXml.js:4649:10)
    at eval (Aws_restXml.js:4150:40)
    at XmlNode.l (XmlNode.js:63:27)
    at se_BucketLifecycleConfiguration (Aws_restXml.js:4150:8)
    at se_PutBucketLifecycleConfigurationCommand (Aws_restXml.js:1542:20)

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I thought of omitting the "Filter" entirely (as it is supposed to be optional as per the docs), but that resulted in error as well. Found a similar issue for this aws/aws-sdk-js#2530.

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Only workaround that did work for me is to use following: Filter: { Prefix: '' } and SDK was happy with this syntax.

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Is this an expected behaviour or a bug on SDK or documentation side ?