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# `Expires` \[Generate relative expiration timestamps]

Utility functions for generating ISO 8601 datetime strings relative to the current time.

## Usage

```ts twoslash
import { Expires } from 'mppx'

// Expire in 30 seconds
const in30Seconds = Expires.seconds(30)

// Expire in 5 minutes
const in5Minutes = Expires.minutes(5)

// Expire in 2 hours
const in2Hours = Expires.hours(2)

// Expire in 7 days
const in7Days = Expires.days(7)

// Expire in 2 weeks
const in2Weeks = Expires.weeks(2)

// Expire in 3 months
const in3Months = Expires.months(3)

// Expire in 1 year
const in1Year = Expires.years(1)
```

## Functions

### seconds

Returns an ISO 8601 datetime string `n` seconds from now.

```ts
function seconds(n: number): string
```

### minutes

Returns an ISO 8601 datetime string `n` minutes from now.

```ts
function minutes(n: number): string
```

### hours

Returns an ISO 8601 datetime string `n` hours from now.

```ts
function hours(n: number): string
```

### days

Returns an ISO 8601 datetime string `n` days from now.

```ts
function days(n: number): string
```

### weeks

Returns an ISO 8601 datetime string `n` weeks from now.

```ts
function weeks(n: number): string
```

### months

Returns an ISO 8601 datetime string `n` months (30 days) from now.

```ts
function months(n: number): string
```

### years

Returns an ISO 8601 datetime string `n` years (365 days) from now.

```ts
function years(n: number): string
```

## Return type

All functions return:

```ts
type ReturnType = string
```

An ISO 8601 datetime string (for example, `"2025-01-15T12:30:00.000Z"`).

## Parameters

### n

* **Type:** `number`

The number of time units from now.