Eslint shared rules

[klebba]

There are a few new violations here:

~/demo/fail/index.js
  4:19  error  Unexpected constant binary expression. Compares constantly with the left-hand side of the `===`  no-constant-binary-expression

~/x-test.js
    48:6   warning  Unexpected use of '^'                                                                             no-bitwise
    48:11  warning  Unexpected use of '&'                                                                             no-bitwise
    48:59  warning  Unexpected use of '>>'                                                                            no-bitwise
   463:83  warning  Array.prototype.findLastIndex() expects a value to be returned at the end of arrow function       array-callback-return
   469:82  warning  Array.prototype.findLastIndex() expects a value to be returned at the end of arrow function       array-callback-return
   475:73  warning  Array.prototype.findIndex() expects a value to be returned at the end of arrow function           array-callback-return
   481:73  warning  Array.prototype.findLastIndex() expects a value to be returned at the end of arrow function       array-callback-return
   527:69  warning  Array.prototype.findLastIndex() expects a value to be returned at the end of arrow function       array-callback-return
   550:69  warning  Array.prototype.findLastIndex() expects a value to be returned at the end of arrow function       array-callback-return
   567:69  warning  Array.prototype.findLastIndex() expects a value to be returned at the end of arrow function       array-callback-return
   589:69  warning  Array.prototype.findLastIndex() expects a value to be returned at the end of arrow function       array-callback-return
  1176:14  warning  Function declared in a loop contains unsafe references to variable(s) 'lineNumber', 'lineNumber'  no-loop-func