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# Motivation

We do not currently support the whole of the AppSync `@aws-appsync/utils` package available on AWS. We would like some input on what functions are the most used by our community.

# Instructions

Please add a comment to this PR indicating which functions you use when using AppSync, specifically in JavaScript resolvers from the `@aws-appsync/utils` package. If a comment already exists with your suggestion then please leave a :+1: on the comment, and we will use this to prioritise the functions that are most requested.

Currently implemented functions

Assuming the following import:

```javascript
import { util } from '@aws-appsync/utils'
```

* `util.autoId`
* `util.appendError` _(partial, the function exists but errors are not yet captured)_
* `util.time.nowFormatted`
* `util.transform.toDynamoDBFilterExpression`
* `util.transform.toDynamoDBConditionExpression`
* `util.dynamodb.toDynamoDB`
* `util.dynamodb.toString`
* `util.dynamodb.toStringSet`
* `util.dynamodb.toNumber`
* `util.dynamodb.toNumberSet`
* `util.dynamodb.toBinary`
* `util.dynamodb.toBinarySet`
* `util.dynamodb.toBoolean`
* `util.dynamodb.toNull`
* `util.dynamodb.toList`
* `util.dynamodb.toMap`
* `util.dynamodb.toMapValues`
* `util.dynamodb.toS3Object`
* `util.dynamodb.fromS3ObjectJson`

Assuming the following import:

```javascript
import * as rds from '@aws-appsync/utils/rds'
```

* `rds.createMySQLStatement`
* `rds.createPgStatement`
* `rds.insert`
* `rds.remove`
* `rds.select`
* `rds.toJsonObject`
* `rds.typeHint.DECIMAL`
* `rds.typeHint.JSON`
* `rds.typeHint.TIME`
* `rds.typeHint.DATE`
* `rds.typeHint.UUID`
* `rds.typeHint.TIMESTAMP`
* `rds.update`

Assuming the following import:

```javascript
import * as dynamodb from '@aws-appsync/utils/dynamodb'
```

* `dynamodb.get`
* `dynamodb.operations.add`
* `dynamodb.operations.append`
* `dynamodb.operations.decrement`
* `dynamodb.operations.increment`
* `dynamodb.operations.prepend`
* `dynamodb.operations.replace`
* `dynamodb.put`
* `dynamodb.remove`
* `dynamodb.scan`
* `dynamodb.update`

未指定源文件或测试。请查看列出的 @aws-appsync/utils、rds 和 dynamodb 函数，然后评论你使用的 JavaScript resolver 函数，或对现有的匹配建议作出反应；当使用建议或反应发布后，所请求的社区意见征集即告完成。

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