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eb39fafa4f
includes a (minimal) working wrapper Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
87 lines
1.2 KiB
Markdown
87 lines
1.2 KiB
Markdown
# disallow bitwise operators (no-bitwise)
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The use of bitwise operators in JavaScript is very rare and often `&` or `|` is simply a mistyped `&&` or `||`, which will lead to unexpected behavior.
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```js
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var x = y | z;
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```
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## Rule Details
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This rule disallows bitwise operators.
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Examples of **incorrect** code for this rule:
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```js
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/*eslint no-bitwise: "error"*/
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var x = y | z;
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var x = y & z;
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var x = y ^ z;
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var x = ~ z;
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var x = y << z;
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var x = y >> z;
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var x = y >>> z;
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x |= y;
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x &= y;
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x ^= y;
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x <<= y;
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x >>= y;
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x >>>= y;
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```
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Examples of **correct** code for this rule:
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```js
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/*eslint no-bitwise: "error"*/
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var x = y || z;
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var x = y && z;
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var x = y > z;
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var x = y < z;
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x += y;
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```
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## Options
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This rule has an object option:
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* `"allow"`: Allows a list of bitwise operators to be used as exceptions.
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* `"int32Hint"`: Allows the use of bitwise OR in `|0` pattern for type casting.
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### allow
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Examples of **correct** code for this rule with the `{ "allow": ["~"] }` option:
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```js
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/*eslint no-bitwise: ["error", { "allow": ["~"] }] */
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~[1,2,3].indexOf(1) === -1;
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```
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### int32Hint
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Examples of **correct** code for this rule with the `{ "int32Hint": true }` option:
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```js
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/*eslint no-bitwise: ["error", { "int32Hint": true }] */
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var b = a|0;
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```
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