从JS迁移函数到打字稿

Question

I am implementing a working JS function to typescript, but I'm getting an error on parameters: "error, success"

[tslint] Parentheses are required around the parameters of an arrow function definition (arrow-parens)

function chapa() {
  console.log('altered');
  TouchID.isSupported()
  .then(authenticate)
  .catch(error => {
    AlertIOS.alert('TouchID not supported');
  });
}

so the "error" is underlined with error, with this message:

[tslint] Parentheses are required around the parameters of an arrow function definition (arrow-parens)

how should I pass then the "error" parameter?, cheers

Answer 1

就像它说的那样，在参数周围加上括号：

.catch((error: any) => {

Answer 2

If you'd rather not add parentheses around the parameter (it's not strictly required by Typescript), add the following to the rules object in your tslint.json file.

"arrow-parens": [true, "ban-single-arg-parens"]

Check out https://palantir.github.io/tslint/usage/configuration/ and https://palantir.github.io/tslint/rules/arrow-parens/ for more details.