### Install close-with-grace

Source: https://github.com/mcollina/close-with-grace/blob/main/README.md

Install the library using npm.

```bash
npm i close-with-grace
```

--------------------------------

### Example with Fastify

Source: https://github.com/mcollina/close-with-grace/blob/main/README.md

Integrate closeWithGrace with a Fastify application for graceful server shutdown. Logs server closing events using Fastify's logger.

```javascript
import fastify from 'fastify'
import closeWithGrace from 'close-with-grace'

const app = fastify()

closeWithGrace(async function ({ signal, err, manual }) {
  if (err) {
    app.log.error({ err }, 'server closing with error')
  } else {
    app.log.info(`${signal} received, server closing`)
  }
  await app.close()
})

await app.listen()
```

--------------------------------

### Basic Usage with Delay

Source: https://github.com/mcollina/close-with-grace/blob/main/README.md

Use closeWithGrace with a specified delay for graceful shutdown. The default delay is 10000ms.

```javascript
const closeWithGrace = require('close-with-grace')

// delay is the number of milliseconds for the graceful close to
// finish.
closeWithGrace({ delay: 500 }, async function ({ signal, err, manual }) {
  if (err) {
    console.error(err)
  }
  await closeYourServer()
})
```

--------------------------------

### Usage with Custom Logger

Source: https://github.com/mcollina/close-with-grace/blob/main/README.md

Configure closeWithGrace to use a custom logger for error messages. The default logger is console.

```javascript
const closeWithGrace = require('close-with-grace')

// delay is the number of milliseconds for the graceful close to
// finish.
closeWithGrace(
  {
    delay: 500,
    logger: { error: (m) => console.error(`[close-with-grace] ${m}`) }
  },
  async function ({ signal, err, manual }) {
  if (err) {
    console.error(err)
  }
  await closeYourServer()
})
```

--------------------------------

### Skipping Specific Events

Source: https://github.com/mcollina/close-with-grace/blob/main/README.md

Prevent specific events like 'unhandledRejection' or 'uncaughtException' from triggering the graceful close. You must handle these skipped events manually.

```javascript
import closeWithGrace from 'close-with-grace'

// Handle errors separately
process.on('unhandledRejection', (err) => {
  // Your custom error handling
})

closeWithGrace(
  { skip: ['unhandledRejection', 'uncaughtException'] },
  async function ({ signal, err, manual }) {
    await cleanupResources()
  }
)
```

--------------------------------

### Disable Logger

Source: https://github.com/mcollina/close-with-grace/blob/main/README.md

Disable logging entirely by passing a falsy value to the logger option.

```javascript
// default logger is console
// to disable logging at all, pass falsy value to logger option.
closeWithGrace({ logger: false }, () => await somethingUseful())
```

--------------------------------

### Disable Delay

Source: https://github.com/mcollina/close-with-grace/blob/main/README.md

Disable the delay feature by passing a falsy value to the delay option.

```javascript
// default delay is 10000
// to disable delay feature at all, pass falsy value to delay option.
closeWithGrace({ delay: false }, () => await somethingUseful())
```

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