meteor/v3/mongo-db-async-methods
No description available
This codemod updates synchronous MongoDB operations in a Meteor project to use their asynchronous counterparts, making the code compatible with modern JavaScript best practices (using `async/await`). It transforms methods such as `find`, `findOne`, `insert`, `update`, `remove`, and `upsert` to their asynchronous equivalents by appending `Async` to method names and introducing `await`.
### Example
This codemod converts synchronous MongoDB queries and updates into asynchronous methods for better code readability, performance, and error handling.
### Before
```ts
const docs = MyCollection.find({ _id: "123" }).fetch();
const doc = MyCollection.findOne({ _id: "123" });
```
### After
```ts
const docs = await MyCollection.find({ _id: "123" }).fetchAsync();
const doc = await MyCollection.findOneAsync({ _id: "123" });
```
### Transformations
This codemod handles various MongoDB operations and converts them into asynchronous functions.
#### Example 1: Fetching documents
**Before:**
```ts
const docs = MyCollection.find({ _id: "123" }).fetch();
```
**After:**
```ts
const docs = await MyCollection.find({ _id: "123" }).fetchAsync();
```
#### Example 2: Fetching a single document
**Before:**
```ts
const doc = MyCollection.findOne({ _id: "123" });
```
**After:**
```ts
const doc = await MyCollection.findOneAsync({ _id: "123" });
```
#### Example 3: Updating documents
**Before:**
```ts
MyCollection.update({ _id: "123" }, { $set: { name: "John" } });
const updatedDocument = MyCollection.findOne({ _id: "123" });
```
**After:**
```ts
await MyCollection.updateAsync({ _id: "123" }, { $set: { name: "John" } });
const updatedDocument = await MyCollection.findOneAsync({ _id: "123" });
```
#### Example 4: Inserting, updating, removing, and upserting documents
**Before:**
```ts
MyCollection.insert({ name: "Jane", age: 30 });
MyCollection.update({ _id: "123" }, { $set: { name: "John" } });
MyCollection.remove({ _id: "123" });
MyCollection.upsert({ _id: "123" }, { $set: { name: "John" } });
```
**After:**
```ts
await MyCollection.insertAsync({ name: "Jane", age: 30 });
await MyCollection.updateAsync({ _id: "123" }, { $set: { name: "John" } });
await MyCollection.removeAsync({ _id: "123" });
await MyCollection.upsertAsync({ _id: "123" }, { $set: { name: "John" } });
```
---
This codemod simplifies migration from synchronous MongoDB methods to their asynchronous versions, improving performance and allowing better control over the code execution flow.