isFileSync method
- String path
Synchronously checks if type(path) returns
io.FileSystemEntityType.FILE.
Implementation
bool isFileSync(String path) =>
    typeSync(path) == io.FileSystemEntityType.file;Synchronously checks if type(path) returns
io.FileSystemEntityType.FILE.
bool isFileSync(String path) =>
    typeSync(path) == io.FileSystemEntityType.file;