feat: Complete fleet — 94 skills across 10+ domains

Pulled ALL skills from 15 source repositories:
- anthropics/skills: 16 (docs, design, MCP, testing)
- obra/superpowers: 14 (TDD, debugging, agents, planning)
- coreyhaines31/marketingskills: 25 (marketing, CRO, SEO, growth)
- better-auth/skills: 5 (auth patterns)
- vercel-labs/agent-skills: 5 (React, design, Vercel)
- antfu/skills: 16 (Vue, Vite, Vitest, pnpm, Turborepo)
- Plus 13 individual skills from various repos

Mosaic Stack is not limited to coding — the Orchestrator and
subagents serve coding, business, design, marketing, writing,
logistics, analysis, and more.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Jason Woltje
2026-02-16 16:27:42 -06:00
parent 861b28b965
commit f5792c40be
1262 changed files with 212048 additions and 61 deletions

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---
category: Time
---
# useDateFormat
Get the formatted date according to the string of tokens passed in, inspired
by [dayjs](https://github.com/iamkun/dayjs).
**List of all available formats (HH:mm:ss by default):**
| Format | Output | Description |
| ------ | ------------------------ | --------------------------------------- |
| `Yo` | 2018th | Ordinal formatted year |
| `YY` | 18 | Two-digit year |
| `YYYY` | 2018 | Four-digit year |
| `M` | 1-12 | The month, beginning at 1 |
| `Mo` | 1st, 2nd, ..., 12th | The month, ordinal formatted |
| `MM` | 01-12 | The month, 2-digits |
| `MMM` | Jan-Dec | The abbreviated month name |
| `MMMM` | January-December | The full month name |
| `D` | 1-31 | The day of the month |
| `Do` | 1st, 2nd, ..., 31st | The day of the month, ordinal formatted |
| `DD` | 01-31 | The day of the month, 2-digits |
| `H` | 0-23 | The hour |
| `Ho` | 0th, 1st, 2nd, ..., 23rd | The hour, ordinal formatted |
| `HH` | 00-23 | The hour, 2-digits |
| `h` | 1-12 | The hour, 12-hour clock |
| `ho` | 1st, 2nd, ..., 12th | The hour, 12-hour clock, sorted |
| `hh` | 01-12 | The hour, 12-hour clock, 2-digits |
| `m` | 0-59 | The minute |
| `mo` | 0th, 1st, ..., 59th | The minute, ordinal formatted |
| `mm` | 00-59 | The minute, 2-digits |
| `s` | 0-59 | The second |
| `so` | 0th, 1st, ..., 59th | The second, ordinal formatted |
| `ss` | 00-59 | The second, 2-digits |
| `SSS` | 000-999 | The millisecond, 3-digits |
| `A` | AM PM | The meridiem |
| `AA` | A.M. P.M. | The meridiem, periods |
| `a` | am pm | The meridiem, lowercase |
| `aa` | a.m. p.m. | The meridiem, lowercase and periods |
| `d` | 0-6 | The day of the week, with Sunday as 0 |
| `dd` | S-S | The min name of the day of the week |
| `ddd` | Sun-Sat | The short name of the day of the week |
| `dddd` | Sunday-Saturday | The name of the day of the week |
| `z` | GMT, GMT+1 | The timezone with offset |
| `zz` | GMT, GMT+1 | The timezone with offset |
| `zzz` | GMT, GMT+1 | The timezone with offset |
| `zzzz` | GMT, GMT+01:00 | The long timezone with offset |
- Meridiem is customizable by defining `customMeridiem` in `options`.
## Usage
### Basic
```vue
<script setup lang="ts">
import { useDateFormat, useNow } from '@vueuse/core'
const formatted = useDateFormat(useNow(), 'YYYY-MM-DD HH:mm:ss')
</script>
<template>
<div>{{ formatted }}</div>
</template>
```
### Use with locales
```vue
<script setup lang="ts">
import { useDateFormat, useNow } from '@vueuse/core'
const formatted = useDateFormat(useNow(), 'YYYY-MM-DD (ddd)', { locales: 'en-US' })
</script>
<template>
<div>{{ formatted }}</div>
</template>
```
### Use with custom meridiem
```vue
<script setup lang="ts">
import { useDateFormat } from '@vueuse/core'
function customMeridiem(hours: number, minutes: number, isLowercase?: boolean, hasPeriod?: boolean) {
const m = hours > 11 ? (isLowercase ? 'μμ' : 'ΜΜ') : (isLowercase ? 'πμ' : 'ΠΜ')
return hasPeriod ? m.split('').reduce((acc, current) => acc += `${current}.`, '') : m
}
const am = useDateFormat('2022-01-01 05:05:05', 'hh:mm:ss A', { customMeridiem })
// am.value = '05:05:05 ΠΜ'
const pm = useDateFormat('2022-01-01 17:05:05', 'hh:mm:ss AA', { customMeridiem })
// pm.value = '05:05:05 Μ.Μ.'
</script>
```
## Type Declarations
```ts
export type DateLike = Date | number | string | undefined
export interface UseDateFormatOptions {
/**
* The locale(s) to used for dd/ddd/dddd/MMM/MMMM format
*
* [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl#locales_argument).
*/
locales?: MaybeRefOrGetter<Intl.LocalesArgument>
/**
* A custom function to re-modify the way to display meridiem
*
*/
customMeridiem?: (
hours: number,
minutes: number,
isLowercase?: boolean,
hasPeriod?: boolean,
) => string
}
export declare function formatDate(
date: Date,
formatStr: string,
options?: UseDateFormatOptions,
): string
export declare function normalizeDate(date: DateLike): Date
export type UseDateFormatReturn = ComputedRef<string>
/**
* Get the formatted date according to the string of tokens passed in.
*
* @see https://vueuse.org/useDateFormat
* @param date - The date to format, can either be a `Date` object, a timestamp, or a string
* @param formatStr - The combination of tokens to format the date
* @param options - UseDateFormatOptions
*
* @__NO_SIDE_EFFECTS__
*/
export declare function useDateFormat(
date: MaybeRefOrGetter<DateLike>,
formatStr?: MaybeRefOrGetter<string>,
options?: UseDateFormatOptions,
): UseDateFormatReturn
```