# Errors

Rules which relate to productions which are almost always erroneous or cause unexpected behavior.

# Rules

Name	Description
for-direction	Disallow for loops which update their counter in the wrong direction.
getter-return	Disallow getter properties which do not always return a value.
no-async-promise-executor	Disallow async functions as promise executors.
no-await-in-loop	Disallow await inside of loops.
no-compare-neg-zero	Disallow comparison against -0 which yields unexpected behavior.
no-cond-assign	Forbid the use of assignment expressions in conditions which may yield unwanted behavior.
no-confusing-arrow	Disallow arrow functions where they could be confused with comparisons.
no-constant-condition	Disallow constant conditions which always yield one result.
no-debugger	Disallow the use of debugger statements.
no-dupe-keys	Disallow duplicate keys in object literals.
no-duplicate-cases	Disallow duplicate test cases in switch statements.
no-empty	Disallow empty block statements.
no-extra-boolean-cast	Disallow unnecessary boolean casts.
no-extra-semi	Disallow unneeded semicolons.
no-inner-declarations	Disallow variable and function declarations in nested blocks.
no-irregular-whitespace	Disallow weird/irregular whitespace.
no-new-symbol	Disallow constructing Symbol using new.
no-prototype-builtins	Disallow direct use of Object.prototype builtins directly.
no-setter-return	Disallow setters to return values.
no-sparse-arrays	Disallow sparse arrays.
no-unexpected-multiline	Disallow confusing newlines in expressions.
no-unsafe-finally	Forbid the use of unsafe control flow statements in try and catch blocks.
no-unsafe-negation	Deny the use of ! on the left hand side of an instanceof or in expression where it is ambiguous.
use-isnan	Disallow incorrect comparisons against NaN.
valid-typeof	Enforce the use of valid string literals in a typeof comparison.

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