firefrost-gaming/antigravity-skills-reference

Files

Al-Garadi ef285b5c97 fix: sync upstream main with Windows validation and skill guidance cleanup (#457 )

* fix: stabilize validation and tests on Windows

* test: add Windows smoke coverage for skill activation

* refactor: make setup_web script CommonJS

* fix: repair aegisops-ai frontmatter

* docs: add when-to-use guidance to core skills

* docs: add when-to-use guidance to Apify skills

* docs: add when-to-use guidance to Google and Expo skills

* docs: add when-to-use guidance to Makepad skills

* docs: add when-to-use guidance to git workflow skills

* docs: add when-to-use guidance to fp-ts skills

* docs: add when-to-use guidance to Three.js skills

* docs: add when-to-use guidance to n8n skills

* docs: add when-to-use guidance to health analysis skills

* docs: add when-to-use guidance to writing and review skills

* meta: sync generated catalog metadata

* docs: add when-to-use guidance to Robius skills

* docs: add when-to-use guidance to review and workflow skills

* docs: add when-to-use guidance to science and data skills

* docs: add when-to-use guidance to tooling and automation skills

* docs: add when-to-use guidance to remaining skills

* fix: gate bundle helper execution in Windows activation

* chore: drop generated artifacts from contributor PR

* docs(maintenance): Record PR 457 sweep

Document the open issue triage, PR supersedence decision, local verification, and source-only cleanup that prepared PR #457 for re-running CI.

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Co-authored-by: sickn33 <sickn33@users.noreply.github.com>

2026-04-05 21:04:39 +02:00

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Option Quick Reference

Option = value that might not exist. Some(value) or None.

When to Use

You need a quick fp-ts reference for nullable or optional values.
The task involves eliminating null checks, safe property access, or optional chaining with Option.
You want a short reference card rather than a full migration guide.

Create

import * as O from 'fp-ts/Option'

O.some(5)              // Some(5)
O.none                 // None
O.fromNullable(x)      // null/undefined → None, else Some(x)
O.fromPredicate(x > 0)(x) // false → None, true → Some(x)

Transform

O.map(fn)              // Transform inner value
O.flatMap(fn)          // Chain Options (fn returns Option)
O.filter(predicate)    // None if predicate false

Extract

O.getOrElse(() => default)  // Get value or default
O.toNullable(opt)           // Back to T | null
O.toUndefined(opt)          // Back to T | undefined
O.match(onNone, onSome)     // Pattern match

Common Patterns

import { pipe } from 'fp-ts/function'
import * as O from 'fp-ts/Option'

// Safe property access
pipe(
  O.fromNullable(user),
  O.map(u => u.profile),
  O.flatMap(p => O.fromNullable(p.avatar)),
  O.getOrElse(() => '/default-avatar.png')
)

// Array first element
import * as A from 'fp-ts/Array'
pipe(
  users,
  A.head,  // Option<User>
  O.map(u => u.name),
  O.getOrElse(() => 'No users')
)

vs Nullable

// ❌ Nullable - easy to forget checks
const name = user?.profile?.name ?? 'Guest'

// ✅ Option - explicit, composable
pipe(
  O.fromNullable(user),
  O.flatMap(u => O.fromNullable(u.profile)),
  O.map(p => p.name),
  O.getOrElse(() => 'Guest')
)

Use Option when you need to chain operations on optional values.

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