SyntaxError: 'arguments'/'eval' can't be defined or assigned to in strict mode code

Message

SyntaxError: Unexpected eval or arguments in strict mode (V8-based)
SyntaxError: 'arguments' can't be defined or assigned to in strict mode code (Firefox)
SyntaxError: Cannot modify 'arguments' in strict mode. (Safari)
SyntaxError: Cannot destructure to a parameter name 'arguments' in strict mode. (Safari)
SyntaxError: Cannot declare a variable named arguments in strict mode. (Safari)
SyntaxError: Cannot declare a catch variable named 'arguments' in strict mode. (Safari)
SyntaxError: 'arguments' is not a valid function name in strict mode. (Safari)

Error type

What went wrong?

In strict mode, the names arguments and eval behave as if they are reserved words: you cannot make they refer to anything other than the arguments object in functions or the global eval function.

Examples

Invalid cases

"use strict";

const arguments = [1, 2, 3];
console.log(Math.max(...arguments));

function foo(...arguments) {
  console.log(arguments);
}

Valid cases

"use strict";

const args = [1, 2, 3];
console.log(Math.max(...args));

function foo(...args) {
  console.log(args);
}

See also

• Strict mode
• arguments
• eval()