no-new-symbol
Disallow new operators with the Symbol object
This rule was deprecated in ESLint v9.0.0 and replaced by the no-new-native-nonconstructor rule.
Symbol is not intended to be used with the new operator, but to be called as a function.
var foo = new Symbol("foo");
This throws a TypeError exception.
Rule Details
This rule is aimed at preventing the accidental calling of Symbol with the new operator.
Examples
Examples of incorrect code for this rule:
Open in Playground
/*eslint no-new-symbol: "error"*/
var foo = new ('foo');
Examples of correct code for this rule:
Open in Playground
/*eslint no-new-symbol: "error"*/
var foo = Symbol('foo');
// Ignores shadowed Symbol.
function bar(Symbol) {
const baz = new Symbol("baz");
}
When Not To Use It
This rule should not be used in ES3/5 environments.
Handled by TypeScript
It is safe to disable this rule when using TypeScript because TypeScript's compiler enforces this check.
Version
This rule was introduced in ESLint v2.0.0-beta.1.