如何从 TypeScript 的目录中导入所有模块？
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How to import all modules from a directory in TypeScript?
提问by Landeeyo
In TypeScript handbookfew techniques for importing modules are described:
在 TypeScript手册中，介绍了一些导入模块的技术：
- Import a single export from a module:
import { ZipCodeValidator } from "./ZipCodeValidator"; - Import a single export from a module and rename it:
import { ZipCodeValidator as ZCV } from "./ZipCodeValidator"; - Import entire module:
import * as validator from "./ZipCodeValidator";
- 从模块导入单个导出：
import { ZipCodeValidator } from "./ZipCodeValidator"; - 从模块导入单个导出并重命名：
import { ZipCodeValidator as ZCV } from "./ZipCodeValidator"; - 导入整个模块：
import * as validator from "./ZipCodeValidator";
I expect there's one more option but nowhere I can find it. Is it possible to import all modules from a given directory?
我希望还有一种选择，但我无处可寻。是否可以从给定目录导入所有模块？
I guess the syntax should be more or less like this: import * from "./Converters".
我想语法应该或多或少是这样的：import * from "./Converters".
回答by marvinhagemeister
No this is not possible. What most people do is create an index.jsfile which re-exports all files in the same directory.
不，这是不可能的。大多数人所做的是创建一个index.js文件，该文件将同一目录中的所有文件重新导出。
Example:
例子：
my-module/
a.ts
b.ts
index.ts
a.ts
a.ts
export default function hello() {
console.log("hello");
}
b.ts
b.ts
export default function world() {
console.log("world");
}
index.ts
索引.ts
export { default as A } from "./a";
export { default as B } from "./b";
The index name can be dropped (same as in javascript):
可以删除索引名称（与在 javascript 中相同）：
import * as whatever from "./my-module";
console.log(whatever);
// Logs: { A: [Function: hello], B: [Function: world] }
