piotrwitek/utility-types
Utility Types
这是一个 TypeScript 实用类型库，为复杂的对象和联合类型转换提供高级类型别名和映射类型。它实现了用于创建品牌化（branded）标称类型、提取类型元数据以及对联合类型执行集合操作的专用工具。
该项目通过一个用于递归对象转换的工具包脱颖而出，允许在深度嵌套的结构中应用只读或可选状态等属性约束。它还提供了一个用于计算联合类型之间的交集、差集和补集的系统，以模拟数学集合逻辑。
该库涵盖了广泛的类型系统功能，包括对象属性过滤、形状比较以及类构造函数和 Promise 解析类型的提取。它还包括用于值验证的实用程序，例如检测假值或空值以及识别原始类型。
Features
- Recursive Mapped Types - Provides a toolkit for recursively applying property constraints across deeply nested object structures.
- Recursive Property Transformations - Enables recursive modification of properties in deep object structures to change mutability or requirement status.
- Object Type Transformations - Recursively applies property constraints like read-only or required status to nested object structures.
- Recursive Object Type Transformers - Provides a toolkit for applying property constraints like read-only or optional status to deeply nested object structures.
- Conditional Types - Provides type-level decision systems to select types based on evaluated conditions.
- Static Type Metadata Extractors - Retrieves constructor, return, and promise resolution types from classes and functions.
- Union Type Transformations - Provides utilities for manipulating, filtering, and aggregating properties across union types.
- Union Member Filtering - Includes utilities for filtering and transforming individual members of union types.
- Union Set Operations - Computes mathematical set-like operations such as differences and intersections between union types.
- TypeScript Advanced Type Features - Implements advanced TypeScript features including generics, conditional types, and mapped types for strong type safety.
- Mapped Type Transformations - Implements mapped type transformations for iterating over keys to reconstruct type structures.
- Type Intersection and Merging - Provides capabilities for combining multiple type definitions into a single composite structure.
- Branded Types - Implements branded types to distinguish between identical object structures using unique labels.
- Type-Level - Changes properties or nested structures to be either read-only or mutable via utility types.
- Asynchronous Type Extraction - Extracts the resolution type of a Promise at the type level.
- Constructor Extraction - Retrieves the constructor type of a class by analyzing the type of its instances.
- Object Key Extractors - Retrieves a union of object keys based on criteria like value type or mutability.
- Object Property Transformers - Provides utilities for filtering specific properties from objects at the type level.
- Shape Comparisons - Computes intersections and differences between two object types to identify shared or unique properties.
- Template Literal Types - Uses template literal types to generate and transform property keys at the type level.
- Union to Intersection Converters - Transforms a union type into an intersection type composed of all its constituent members.
- Element Type Extraction - Derives a union of all value types contained within an object, tuple, or array.
- Type Utilities - Collection of utility types for common development patterns.
