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Jason Woltje f5792c40be 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>

2026-02-16 16:27:42 -06:00

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title, impact, impactDescription, type, tags

title

impact

impactDescription

type

Use immediate Option Instead of Duplicate Initial Call

Impact: LOW - Calling a function manually at setup and also in a watcher leads to duplicate code. The immediate: true option runs the watcher callback immediately with the current value, combining both behaviors.

Task Checklist

Use { immediate: true } instead of calling handler in onMounted/created
Consider watchEffect as an alternative (always runs immediately)
Remember immediate callback receives undefined as oldValue on first run

Incorrect:

<script setup>
import { ref, watch, onMounted } from 'vue'

const userId = ref(1)
const userData = ref(null)

// BAD: Duplicate calls - once in onMounted, once in watch
async function loadUser(id) {
  const response = await fetch(`/api/users/${id}`)
  userData.value = await response.json()
}

onMounted(() => {
  loadUser(userId.value)  // Initial call
})

watch(userId, (newId) => {
  loadUser(newId)  // On change
})
</script>

// Options API - BAD: Duplicate in created and watch
export default {
  data() {
    return { userId: 1, userData: null }
  },
  created() {
    this.loadUser()  // Initial call
  },
  watch: {
    userId() {
      this.loadUser()  // On change - duplicate!
    }
  },
  methods: {
    async loadUser() {
      const response = await fetch(`/api/users/${this.userId}`)
      this.userData = await response.json()
    }
  }
}

Correct:

<script setup>
import { ref, watch } from 'vue'

const userId = ref(1)
const userData = ref(null)

// GOOD: Single watch with immediate runs on mount and on change
watch(
  userId,
  async (newId) => {
    const response = await fetch(`/api/users/${newId}`)
    userData.value = await response.json()
  },
  { immediate: true }
)
</script>

// Options API - GOOD: Using immediate option
export default {
  data() {
    return { userId: 1, userData: null }
  },
  watch: {
    userId: {
      async handler(newId) {
        const response = await fetch(`/api/users/${newId}`)
        this.userData = await response.json()
      },
      immediate: true
    }
  }
}

Alternative: watchEffect

<script setup>
import { ref, watchEffect } from 'vue'

const userId = ref(1)
const userData = ref(null)

// watchEffect always runs immediately - no option needed
watchEffect(async () => {
  const response = await fetch(`/api/users/${userId.value}`)
  userData.value = await response.json()
})
</script>

Handling oldValue on Initial Run

<script setup>
import { ref, watch } from 'vue'

const count = ref(0)

watch(
  count,
  (newVal, oldVal) => {
    // On first run with immediate: true
    // oldVal is undefined
    if (oldVal === undefined) {
      console.log('Initial run, count is:', newVal)
    } else {
      console.log(`Count changed from ${oldVal} to ${newVal}`)
    }
  },
  { immediate: true }
)
</script>

One-Time Watch with once Option

<script setup>
import { ref, watch } from 'vue'

const data = ref(null)

// Run only once when data becomes available
watch(
  data,
  (value) => {
    if (value) {
      initializeWithData(value)
      // Watcher automatically stops after this
    }
  },
  { once: true }
)
</script>

Reference

Vue.js Watchers - Eager Watchers

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