Function constantCase

constantCase(str: string): string
Converts a string to constant case

将字符串转换为常量命名法
Parameters
- str: string
  The string to convert. 要转换的字符串
Returns string
The string in constant case. 常量命名法格式的字符串
Example
```
constantCase('foo bar') // => FOO_BAR
constantCase('foo-bar') // => FOO_BAR
```
- Defined in src/string/constant-case.ts:19