The IFacing Interface allows you to get an IBlockPos's possible directions.

It might be required for you to import the package if you encounter any issues, so better be safe than sorry and add the import.
import crafttweaker.world.IFacing;

The Facing interface has 6 static methods that return the said direction.
It also has one more that takes the direction as String input (e.g. "NORTH")

ZenScript
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crafttweaker.world.IFacing.north()
crafttweaker.world.IFacing.east()
crafttweaker.world.IFacing.south()
crafttweaker.world.IFacing.west()
crafttweaker.world.IFacing.down()
crafttweaker.world.IFacing.up()


crafttweaker.world.IFacing.fromString(String name);

ZenGetter	ZenMethod	반환 타입
ZenGetter name	ZenMethod getName()	반환 타입 string
ZenGetter rotateY	ZenMethod rotateY()	반환 타입 IFacing
ZenGetter opposite	ZenMethod opposite()	반환 타입 IFacing

You can compare two facings using the standart comparing Operators == != < > <= >= Alternatively, you can use the function, though the function returns an int that is 0 if they are equal.

ZenScript
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//Returns true or false
facingOne == facingTwo;

//Returns 0 if they are equal
facingOne.compare(facingTwo);

IFacing.getDirectionFromEntityLiving(IBlockPos pos, IEntityLivingBase placer);

The static method returns an IFacing from IEntityLivingBase. The method is often used to determine the facing of some blocks when placed by players, like piston, observer, command block, etc. Unlike the horizontalFacing getter of IEntity, the method can return UP and DOWN. And it always returns the opposite value of the getter.