E0158: unexpected '=>'; expected parameter for arrow function, but got a literal instead
An arrow function has a parameter list followed by =>
followed by a body. It
is a syntax error to write an arrow function with a literal instead of a
parameter list:
let fs = require("fs");
let path = process.argv[2];
fs.readFile(path, "utf-8" => {
});
const queryUser = userID, groupID = 0 => {
/* ... */
};
To fix this error, write a parameter list before =>
:
let fs = require("fs");
let path = process.argv[2];
fs.readFile(path, "utf-8", (err, data) => {
});
Alternatively, write (
)
around the parameter list:
const queryUser = (userID, groupID = 0) => {
/* ... */
};
Introduced in quick-lint-js version 0.3.0.