In the end, Jalen Brunson wouldn’t allow it.

Not tonight.

Not at the Garden.

Not in front of his fans in what is now his city.

The Knicks’ season may not last much longer, but the curtain wasn’t going to come down on it Wednesday night at MSG.

Brunson made sure of that, producing one of the more memorable performances in the franchise’s rich history when facing elimination.

He jump-started his sleeping team after a shoddy start.

He made huge shots when it looked like the Heat was going to climb all the way back from a 19-point deficit.

He ensured there is at least one more game left in his first season as a Knick, carrying his team to a hard-fought, 112-103 Game 5 win that extended this series to Friday night in Miami.

Fittingly, he dribbled out the clock to this gutsy win.

Brunson scored 38 points, added nine rebounds, seven assists and committed just one turnover in a heroic 48-minute masterpiece.

RJ Barrett followed with 26 points and seven rebounds and Julius Randle had 24 points and five assists.

Like Brunson, Quentin Grimes didn’t sit at all, and notched eight points, five assists, four rebounds, two steals and two blocks.

He appeared to hurt his left knee late in the fourth quarter, and not only did he not come out, but stayed in the game and stripped Jimmy Butler on the same play.

The Heat got as close as two with 2:37 left, but Isaiah Hartenstein’s follow slam and two Barrett free throws cut off their momentum.

Butler led Miami with 19 points and Bam Adebayo had 18.