ESP32 devkitC spi problem with microsd card reader

Hi,
i got this problem with microsd card reader ... when putting this simple code:

SPI1.setup({mosi:D23, miso:D19, sck:D18});  
E.connectSDCard(SPI1, D5); 
console.log(require("fs").readdirSync());

i get:

Uncaught Error: Unimplemented on Linux
 at line 1 col 25
E.connectSDCard(SPI1, D5);
                        ^
Uncaught Error: Unable to mount media : NO_FILESYSTEM
 at line 1 col 39
console.log(require("fs").readdirSync());
                                      
=undefined

i followed this schema:
https://farm4.staticflickr.com/3954/33675026246_a5bb2ce4c6_o.jpg

then i followed this schema:
http://www.espruino.com/File+IO

i tried with fat32 filesystem, i tried with ext3

i tried changing pins to free pins ... with software spi
nothing... at all
always same error

please someone help me

The default firmware for the ESP32 is setup to use an FAT files system on the last 1 Mb of the flash memory. To use and SPI SD card, you would need to do a custom build of the firmware, and turn of the FlashFS option. You can use SPI for other devices with the stock firmware

https://github.com/espruino/Espruino/blob/master/boards/ESP32.py#L35

      'FILESYSTEM',
     'FLASHFS'     
   ],

Would need to be changed to:

     'FILESYSTEM',
#     'FLASHFS'     
   ],

and the firmware rebuilt. Then an external SD card could be used.

So now i'm using 1mb and formatted it... but what i get now is that doesn't find any library from modules folder in project directory and even other libraries that should be present already in the firmware... the error i get is:

var nfc = require("PN532").connect(I2C1);
WARNING: Module "PN532" not found
Uncaught Error: Unable to mount media : NO_FILESYSTEM
 at line 1 col 26
var nfc = require("PN532").connect(I2C1);

then i format with:

E.flashFatFS({format:true});

and what i get is:

WARNING: Module "PN532" not found
Uncaught Error: Could not open file : NO_PATH
 at line 1 col 30
var mqtt = require("PN532").create(server, {

what is it happening??

Ok... i just realized that i can't require on the left side of the espruino IDE... that was the problem...
but i still get an error sometimes and sometimes not on trying to make this rfid work:

ERROR: jshI2CRead:, slave doesn't ACK the transfer.
NFC error undefined