[英]Can't get babel to compile string literal type with interpolation on typescript
I have a react application using typescript and I need to create types using literal string types with interpolation:我有一个使用 typescript 的反应应用程序,我需要使用带插值的文字字符串类型创建类型:
class ExampleClass {
product_id!: number;
product_name!: string;
}
export type HeaderClassNames<N extends string> = `theader_${Lowercase<N>}`;
type HeaderClasses = HeaderClassNames<keyof ExampleClass>;
"HeaderClasses" produces: “HeaderClasses”产生:
type HeaderClasses = "theader_product_id" | "theader_product_name"
This works fine by the tsc, but when babel transpiles, it doesn't recognize the template: tsc 可以正常工作,但是当 babel 转译时,它无法识别模板:
Unexpected token (8:72)
6 |
7 | export type TableHeaderConfig<Keys extends string> = Record<Keys, TableHeaderColumn>;
> 8 | export type HeaderClassNames<N extends string> = `theader_${Lowercase<N>}`;
| ^
9 | export type ColumnClassNames<N extends string> = `column_${Lowercase<N>}`;
10 |
Babel said it started supporting this feature, but I install and reinstall babel/core and even tried babel/parser manually (where the commit was made) but nothing changes. Babel说它开始支持这个功能,但是我安装并重新安装了 babel/core,甚至手动尝试了 babel/parser(提交的地方),但没有任何改变。
Appreciate your help.感谢你的帮助。
After a lot of digging, I found out that the babel version being used was the one at the react-app-rewired and react-scripts packages.经过大量挖掘,我发现正在使用的 babel 版本是 react-app-rewired 和 react-scripts 包中的那个。 After some hours your head just doesn't work anymore.
几个小时后,你的头就不再工作了。
I updated them and everything worked.我更新了它们,一切正常。
Thanks to everyone that spend a minute trying to help.感谢所有花一分钟时间提供帮助的人。
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