Typescript：解决javascript内置的类型定义错误(Typescript: Work around type definition error for javascript builtin)

我想在打字稿中使用FormData 。 不幸的是， 生成的打字稿定义文件不支持带有表单元素的FormData构造函数，详见Typescript Issue＃1074 。

我有以下代码：

var formEl = <HTMLFormElement> document.getElementById("myForm"); var formData = new FormData(formEl);

该代码给出了以下错误，因为生成的定义是错误的：

错误TS2346：提供的参数与呼叫目标的任何签名不匹配。

我想要使​​用下面的声明：

declare var FormData: { prototype: FormData; new (form?: HTMLFormElement): FormData; }

但是，如果我包含该类型定义，则会出现此错误：

错误TS2403：随后的变量声明必须具有相同的类型。 变量'FormData'必须是'{new（）：FormData; 原型：FormData; }'，但这里有'{new（form ?: HTMLFormElement）：FormData; 原型：FormData; }”。

我该如何解决这个问题？

I want to use FormData in typescript. Unfortunately, the generated typescript definition files doesn't support a FormData constructor with a Form Element as detailed in Typescript Issue #1074.

I have the following code:

var formEl = <HTMLFormElement> document.getElementById("myForm"); var formData = new FormData(formEl);

The code gives the following error because the generated definition is wrong:

error TS2346: Supplied parameters do not match any signature of call target.

I want to use the following declaration:

declare var FormData: { prototype: FormData; new (form?: HTMLFormElement): FormData; }

But, if I include that type definition, I get this error:

error TS2403: Subsequent variable declarations must have the same type. Variable 'FormData' must be of type '{ new (): FormData; prototype: FormData; }', but here has type '{ new (form?: HTMLFormElement): FormData; prototype: FormData; }'.

How can I work around this issue?

最满意答案

我该如何解决这个问题？

潜力1：

发送公关。

潜力2：

更新已发布的lib.d.ts ：

declare var FormData: { prototype: FormData; new (form?: HTMLFormElement): FormData; }

潜力3：

复制并自定义lib.d.ts并使用--noLib编译并手动引用您的自定义lib.d.ts

潜力4：

绕过类型检查器

var formEl = <HTMLFormElement> document.getElementById("myForm"); var formData = new window['FormData'](formEl);

How can I work around this issue?

Potential 1:

Send a PR.

Potential 2:

Update the shipped lib.d.ts in place:

declare var FormData: { prototype: FormData; new (form?: HTMLFormElement): FormData; }

Potential 3:

Copy and customize lib.d.ts and compile with --noLib and manually reference your custom lib.d.ts.

Potential 4:

Bypass the type-checker

var formEl = <HTMLFormElement> document.getElementById("myForm"); var formData = new window['FormData'](formEl);