voraa,
console.log("\n\t \n\t\t Журнал".replace(/^\s*?(?=\t+\s?\S)/mig, '').replace(/\t/mig, 'T'))
console.log(" \t \t\tЖурнал".replace(/^\s*?(?=\t+\s?\S)/mig, '').replace(/\t/mig, 'T'))
console.log("\t\tЖурнал".replace(/^\s*?(?=\t+\s?\S)/mig, '').replace(/\t/mig, 'T'))
const r = /^\s*?(?=\t+\s?\S)/mig
console.log([...'\n\t \n\t\t Журнал'.replace(r, '')])
console.log([...' \t \t\tЖурнал'.replace(r, '')])