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📜  TypeScript和Flow之间的区别

📅  最后修改于: 2021-01-11 13:00:39             🧑  作者: Mango

TypeScript和Flow之间的区别

流

Facebook开发了Flow，这是一个JavaScript静态类型检查器，位于我们现有的JS代码之上。它是基于流的键入工具，而不是编程语言。为了提高我们的生产力，它做了很多工作。它使我们的程序更快，更智能，更自信，并且规模更大。

Flow使用静态类型注释检查代码是否存在错误。类型注释使我们能够告诉Flow我们希望代码如何工作，并且Flow将确保它以相同的方式工作。该流程是逐步可接受的。可以轻松地从我们的代码库中添加和删除它，而不会破坏任何内容。当我们只想对项目的一部分启用类型检查时，这很有用。

打字稿

TypeScript是一种开源的纯面向对象编程语言。它是JavaScript的强类型超集，可编译为纯JavaScript。 TypeScript由Microsoft根据Apache 2许可开发和维护。它不是直接在浏览器上运行。它需要编译器才能在JavaScript文件中进行编译和生成。 TypeScript源文件的扩展名为“ .ts”。

Anders Hejlsberg开发了TypeScript。它于2012年10月1日首次向公众推出。经过Microsoft两年的内部开发，TypeScript 0.9的新版本于2013年发布。 TypeScript的当前版本是TypeScript 3.4.5 ，该版本于2019年4月24日发布。

TypeScript与流

从下表我们可以了解TypeScript和Flow之间的主要区别。

TypeScript Flow
Introduction It is a typed superset of the JavaScript language. It is open-source and free programming language introduced by Microsoft. It is a flow-based typing tool, not a programming language. It is a JavaScript static type checker that lives on top of our existing JS code. Flow is built to enable fast and precise code analysis.
Design Goal It is used to identify errors in programs through a balance between correctness and productivity. It is used to enforce the type soundness/safety.
Use Case (popular frameworks integration) It becomes a better choice when we are working on Angular 2 or higher versions. If we are working on React, Flow becomes a better choice as it is easily integrated with babel and the already present infrastructure.
Benefits The key benefits are:
  • It uses static typing as a key benefit.
  • It provides useful tools such as code refactoring, auto-completion, navigation.
  • It has excellent IDE support.
  • It can easily integrate with VSCode, which made the editor so popular.
 The key benefits are:
  • It uses static typing as a key benefit.
  • It provides a strong procedural analysis.
  • It can easily understand the code.
  • It strongly analyses and controls the program.
Features The main features of Typescript are:
  • Compile-time type checking
  • Type annotations
  • Type erasure
  • Type inference
  • Enumerated type
  • Interfaces
  • Namespaces
  • Generic
  • Tuples
 The main features of Flow are:
  • Precision
  • Reliability
  • Speed
  • High throughput
  • Path sensitivity
  • Low latency
  • Type inference
  • Real-time feedback
  • Easy to integrate
  • Easily understandable JavaScript patterns
Services Along with the provision of static typing, it provides us with great language services and appropriate tooling that includes code refactoring, navigation, and auto-completion. Along with the provision of static typing, Flow provides us a wide range of inter-procedural analysis and develops an in-depth understanding of our code.
Advantages The advantages of TypeScript are:
  • Popular frameworks support (Vue, React, Angular)
  • Strong community
  • Strong IDE support
  • Compatibility with JavaScript
  • Declaration files
 The advantages of Flow are:
  • Support for any JS file
  • Easy to integrate
  • Strong understanding of the JS patterns
  • Real-time feedback
  • Typecasting
  • Easy readability
  • Easier modification
Disadvantages The disadvantages of TypeScript are:
  • Another programming language
  • Harder to integrate with the existing JS projects
 The disadvantages of Flow are:
  • Smaller community
  • Not so focused on the types
  • Smaller IDE support.
Utility size 42.4 MB 68.4 MB