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noInvalidNewBuiltin (since v1.3.0)

Diagnostic Category: lint/correctness/noInvalidNewBuiltin

Sources:

Disallow new operators with global non-constructor functions.

Some global functions cannot be called using the new operator and will throw a TypeError if you attempt to do so. These functions are:

Examples

Section titled Examples

Invalid

Section titled Invalid
let foo = new Symbol('foo');
correctness/noInvalidNewBuiltin.js:1:11 lint/correctness/noInvalidNewBuiltin  FIXABLE  ━━━━━━━━━━━━━

  ✖ Symbol cannot be called as a constructor.
  
  > 1 │ let foo = new Symbol('foo');
      │           ^^^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ Calling Symbol with the new operator throws a TypeError.
  
  ℹ Unsafe fix: Remove new.
  
    1 │ let·foo·=·new·Symbol('foo');
      │           ----              

let bar = new BigInt(9007199254740991);
correctness/noInvalidNewBuiltin.js:1:11 lint/correctness/noInvalidNewBuiltin  FIXABLE  ━━━━━━━━━━━━━

  ✖ BigInt cannot be called as a constructor.
  
  > 1 │ let bar = new BigInt(9007199254740991);
      │           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ Calling BigInt with the new operator throws a TypeError.
  
  ℹ Unsafe fix: Remove new.
  
    1 │ let·bar·=·new·BigInt(9007199254740991);
      │           ----

Valid

Section titled Valid
let foo = Symbol('foo');


function baz(Symbol) {
    const qux = new Symbol("baz");
}
let bar = BigInt(9007199254740991);


function quux(BigInt) {
    const corge = new BigInt(9007199254740991);
}
Section titled Related links