ZWSP=Zero-width space

U+200B ZERO WIDTH SPACE (HEX=200B,DEC=8203)

(pax=>"pax.key1='test-string';​console.log(pax.key1+':first');​console.log(pax.key1+':second');​console.log(pax.key1+':third');"["split"]("​")["forEach"](jsc=>Function("pax",jsc)(pax)))({})