Description

There are many irregular variable declarations in some Boolean variable declarations.

For example

const showingModal = false

This value is obviously a Boolean value, but it cannot be seen from the variable.

A better variable name can improve code readability

Boolean variables should start with 'is', 'was', 'has', 'can', 'should', etc.

Fail

const showingModal = false

const greatThen = a > b

const completed = progress === 100

const setProperty = key in object

const stringType = typeof input === 'string'

// ...

Pass

const isShowingModal = false

const isGreatThen = a > b

const isCompleted = progress === 100

const hasSetProperty = key in object

const isStringType = typeof input === 'string'

Proposed rule name

better-boolean-var-declaration

Additional Info

This rule has been implemented in my company project, it can't autofix, but it can provide suggestions. I think it is useful

If this is acceptable, I'd be happy to PR