tnet sting problem

gistfile1.txt

Working: 

Clojurescript code: 
(.send socket (str "T" (tnet/dumps
                                     {
                                      "id" id
                                      "code" 200
                                      "headers" [["Content-type" "application/json"]]
                                      "body"   (.stringify (js* "JSON") "a")}))))
Generates this tnet string:
T125:2:id,36:4fe07c05-19f1-402f-aabd-2331ec06b0e5,4:code,3:200#7:headers,40:36:12:Content-type,16:application/json,]]4:body,3:"a",}

hexdump -C 
00000000  54 31 32 35 3a 32 3a 69  64 2c 33 36 3a 34 66 65  |T125:2:id,36:4fe|
00000010  30 37 63 30 35 2d 31 39  66 31 2d 34 30 32 66 2d  |07c05-19f1-402f-|
00000020  61 61 62 64 2d 32 33 33  31 65 63 30 36 62 30 65  |aabd-2331ec06b0e|
00000030  35 2c 34 3a 63 6f 64 65  2c 33 3a 32 30 30 23 37  |5,4:code,3:200#7|
00000040  3a 68 65 61 64 65 72 73  2c 34 30 3a 33 36 3a 31  |:headers,40:36:1|
00000050  32 3a 43 6f 6e 74 65 6e  74 2d 74 79 70 65 2c 31  |2:Content-type,1|
00000060  36 3a 61 70 70 6c 69 63  61 74 69 6f 6e 2f 6a 73  |6:application/js|
00000070  6f 6e 2c 5d 5d 34 3a 62  6f 64 79 2c 33 3a 22 61  |on,]]4:body,3:"a|
00000080  22 2c 7d 0a                                       |",}.|
00000084

Not working: 

Clojurescript code: 
(.send socket (str "T" (tnet/dumps
                                     {
                                      "id" id
                                      "code" 200
                                      "headers" [["Content-type" "application/json"]]
                                      "body"   (.stringify (js* "JSON") "ø")}))))

Generates tnet string: 
T125:2:id,36:4fe07c05-19f1-402f-aabd-2331ec06b0e5,4:code,3:200#7:headers,40:36:12:Content-type,16:application/json,]]4:body,3:"ø",}

hexdump -C
00000000  54 31 32 35 3a 32 3a 69  64 2c 33 36 3a 34 66 65  |T125:2:id,36:4fe|
00000010  30 37 63 30 35 2d 31 39  66 31 2d 34 30 32 66 2d  |07c05-19f1-402f-|
00000020  61 61 62 64 2d 32 33 33  31 65 63 30 36 62 30 65  |aabd-2331ec06b0e|
00000030  35 2c 34 3a 63 6f 64 65  2c 33 3a 32 30 30 23 37  |5,4:code,3:200#7|
00000040  3a 68 65 61 64 65 72 73  2c 34 30 3a 33 36 3a 31  |:headers,40:36:1|
00000050  32 3a 43 6f 6e 74 65 6e  74 2d 74 79 70 65 2c 31  |2:Content-type,1|
00000060  36 3a 61 70 70 6c 69 63  61 74 69 6f 6e 2f 6a 73  |6:application/js|
00000070  6f 6e 2c 5d 5d 34 3a 62  6f 64 79 2c 33 3a 22 c3  |on,]]4:body,3:".|
00000080  b8 22 2c 7d 0a                                    |.",}.|
00000085