3-paths-for-replacing-text-regex.js

const heroes = `NickName: Chapolin, Power: Hammer
Nick: Batman, Power: Money
`
const exp = /(NickName|Nick):\s(?<nickname>\w+),\sPower:\s(?<power>\w.*)/gm

const matchAll = [...heroes.matchAll(exp)].map(({
    groups: {
        nickname,
        power
    }
}) => `${nickname} ${power}`).join('\n')
console.log(`1o\n${matchAll}`)
// 1o
// Chapolin Hammer
// Batman Money

const finalString = heroes.replace(exp, (s, _, nickname, power) => `${nickname} ${power}`)
console.log(`2o\n${finalString}`)
// 2o
// Chapolin Hammer
// Batman Money

const resultSingleLine = heroes.replace(exp, '$<nickname> $<power>')
console.log(`3o\n${resultSingleLine}`)
// 3o
// Chapolin Hammer
// Batman Money