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Quick reference for Option type. Use when user needs to handle nullable values, optional data, or wants to avoid null checks.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/ranbot-ai/awesome-skills --skill fp-option-ref命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
基于 SOC 职业分类
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| name | fp-option-ref |
| description | Quick reference for Option type. Use when user needs to handle nullable values, optional data, or wants to avoid null checks. |
| category | AI & Agents |
| source | antigravity |
| tags | ["typescript","ai"] |
| url | https://github.com/sickn33/antigravity-awesome-skills/tree/main/skills/fp-option-ref |
Option = value that might not exist. Some(value) or None.
Option.import * as O from
O.()
O.
O.(x)
O.(x > )(x)
O.map(fn) // Transform inner value
O.flatMap(fn) // Chain Options (fn returns Option)
O.filter(predicate) // None if predicate false
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
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')
)
// ❌ 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.