Disallow the use of variables before they are defined (no-use-before-define)
PLEASE READ THIS ISSUE BEFORE USING THIS RULE #1856
Rule Details
This rule extends the base eslint/no-use-before-define
rule. It adds support for type
, interface
and enum
declarations.
How to use
Options
See eslint/no-use-before-define
options. This rule adds the following options:
enums
enums
The flag which shows whether or not this rule checks enum declarations of upper scopes. If this is true
, this rule warns every reference to a enum before the enum declaration. Otherwise, ignores those references.
Examples of incorrect code for the { "enums": true }
option:
Examples of correct code for the { "enums": false }
option:
typedefs
typedefs
The flag which shows whether or not this rule checks type declarations. If this is true
, this rule warns every reference to a type before the type declaration. Otherwise, ignores those references. Type declarations are hoisted, so it's safe.
Examples of correct code for the { "typedefs": false }
option:
Copied from the original ESLint rule docs
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