性能架构
本指南介绍 v2.0.0 中引入的 性能架构 特性。
概述
性能架构模块提供了类型级性能提示和优化工具,为最大化编译性能而重写。它包含编译优化标记、性能监控和延迟求值等核心能力。
性能原语
FastV2、CachedV2、LazyV2、MemoizedV2
typescript
import type { FastV2, CachedV2, LazyV2, MemoizedV2 } from 'uni-types'
type F = FastV2<{ a: string; b: number }> // 优化表示
type C = CachedV2<number> // 缓存计算结果
type L = LazyV2<string> // () => string(延迟求值)
type M = MemoizedV2<string> // { _memoized: string }(记忆化)优化标记
typescript
import type { OptimizedV2, NoInferV2, InlineHintV2, PreserveV2 } from 'uni-types'
type O = OptimizedV2<string> // string & { __optimized__: true }
type N = NoInferV2<string> // 阻止类型推断
type I = InlineHintV2<string> // string & { __inline__: true }
type P = PreserveV2<string> // 保持原始类型不做简化编译优化
ReduceComplexity
简化嵌套类型结构,降低编译复杂度:
typescript
import type { ReduceComplexity } from 'uni-types'
type Simplified = ReduceComplexity<{
a: { b: { c: { d: string } } }
}>SimplifyForCompiler
创建编译器友好的类型表示:
typescript
import type { SimplifyForCompiler } from 'uni-types'
type CompilerFriendly = SimplifyForCompiler<ComplexNestedType>预计算与延迟求值
typescript
import type { PrecomputeV2, DeferredEvaluationV2, IncrementalTypeV2 } from 'uni-types'
type Pre = PrecomputeV2<{ a: string; b: number }> // 声明时预计算
type Deferred = DeferredEvaluationV2<HeavyComputation> // 延迟求值
type Inc = IncrementalTypeV2<{ step: 1 }> // 增量类型轻量化与紧凑表示
typescript
import type { LightWeightV2, MinimalV2, CompactRepresentationV2, SharedStructureV2 } from 'uni-types'
type Light = LightWeightV2<string> // string & { __lightweight__: true }
type Min = MinimalV2<string> // string & { __minimal__: true }
type Compact = CompactRepresentationV2<T> // 紧凑类型表示
type Shared = SharedStructureV2<T> // 共享结构优化性能监控
类型复杂度
typescript
import type { TypeComplexityV2 } from 'uni-types'
type C1 = TypeComplexityV2<string> // 1(快速)
type C2 = TypeComplexityV2<string[]> // 2(中等)
type C3 = TypeComplexityV2<Record<string, unknown>> // 3(较慢)编译时间
typescript
import type { CompilationTimeV2 } from 'uni-types'
type T1 = CompilationTimeV2<string> // 'fast'
type T2 = CompilationTimeV2<string[]> // 'moderate'类型大小
typescript
import type { TypeSizeV2 } from 'uni-types'
type S1 = TypeSizeV2<string> // 'small'
type S2 = TypeSizeV2<string[]> // 'medium'编译器提示
typescript
import type { CompilerHint, HintKind, TypeHint, PerformanceHint as PerformanceHintV2 } from 'uni-types'
type Hint = CompilerHint<'optimize'>
type Kind = HintKind // 'performance' | 'readability' | 'compatibility'
type THint = TypeHint<{ optimize: true }>
type PHint = PerformanceHintV2<'cache'>API 参考
参阅 性能架构 API 参考 获取完整文档。