no-bitwise
Disallow bitwise operators
The use of bitwise operators in JavaScript is very rare and often &
or |
is simply a mistyped &&
or ||
, which will lead to unexpected behavior.
var x = y | z;
Rule Details
This rule disallows bitwise operators.
Examples of incorrect code for this rule:
Open in Playground
/*eslint no-bitwise: "error"*/
var x = ;
var x = ;
var x = ;
var x = ;
var x = ;
var x = ;
var x = ;
;
;
;
;
;
;
Examples of correct code for this rule:
Open in Playground
/*eslint no-bitwise: "error"*/
var x = y || z;
var x = y && z;
var x = y > z;
var x = y < z;
x += y;
Options
This rule has an object option:
"allow"
: Allows a list of bitwise operators to be used as exceptions."int32Hint"
: Allows the use of bitwise OR in|0
pattern for type casting.
allow
Examples of correct code for this rule with the { "allow": ["~"] }
option:
Open in Playground
/*eslint no-bitwise: ["error", { "allow": ["~"] }] */
~[1,2,3].indexOf(1) === -1;
int32Hint
Examples of correct code for this rule with the { "int32Hint": true }
option:
Open in Playground
/*eslint no-bitwise: ["error", { "int32Hint": true }] */
var b = a|0;
Version
This rule was introduced in ESLint v0.0.2.