Javascript Regular Expression:Check char repeated & consecutive

How to check in given string atleast one character is repeated and

they are consecutive?

Code:

function hasSameConsecutiveChars(str){

let pattern = /([A-Za-z0-9])\1/gmi

return pattern.test(str);

}

console.log('does string "bheem" has same consecutive characters:',hasSameConsecutiveChars('bheem'))

console.log('does string "raja" has same consecutive characters:',hasSameConsecutiveChars('raja'))

console.log('does number "888786" has same consecutive characters:',hasSameConsecutiveChars('888'))

console.log('does string "india2022" has same consecutive characters:',hasSameConsecutiveChars('india2022'))

console.log('does string "bosS" has same consecutive characters:',hasSameConsecutiveChars('bosS'))

Output:

does string "bheem" has same consecutive characters: true

does string "raja" has same consecutive characters: false

does number "888786" has same consecutive characters: true

does string "india2022" has same consecutive characters: true

does string "bosS" has same consecutive characters: true