It might be required for you to import the package if you encounter any issues (like casting an Array), so better be safe than sorry and add the import at the very top of the file.

ZenScript
 Copy
import crafttweaker.api.world.damage.DamageType;

DamageType extends Record. That means all methods available in Record are also available in DamageType

Creates a new DamageType using the provided values

ZenScript
 Copy
new DamageType(msgId as string, exhaustion as float) as DamageType
new DamageType(inIce, 0.1);

Parameter	Type	Description
Parameter msgId	Type string	Description The unlocalized name of this type
Parameter exhaustion	Type float	Description How much exhaustion does this type cause

Creates a new DamageType using the provided values

ZenScript
 Copy
new DamageType(msgId as string, scaling as DamageScaling, exhaustion as float) as DamageType
new DamageType(inIce, <constant:minecraft:damage/damage_scaling:always>, 0.1);

Parameter	Type	Description
Parameter msgId	Type string	Description The unlocalized name of this type
Parameter scaling	Type DamageScaling	Description The damage scaling used by this type
Parameter exhaustion	Type float	Description How much exhaustion does this type cause

Creates a new DamageType using the provided values

ZenScript
 Copy
new DamageType(msgId as string, scaling as DamageScaling, exhaustion as float, effects as DamageEffects) as DamageType
new DamageType(inIce, <constant:minecraft:damage/damage_scaling:always>, 0.1, <constant:minecraft:damage/damage_effects:freezing>);

Parameter	Type	Description
Parameter msgId	Type string	Description The unlocalized name of this type
Parameter scaling	Type DamageScaling	Description The damage scaling used by this type
Parameter exhaustion	Type float	Description How much exhaustion does this type cause
Parameter effects	Type DamageEffects	Description The effect of this type

Creates a new DamageType using the provided values

ZenScript
 Copy
new DamageType(msgId as string, scaling as DamageScaling, exhaustion as float, effects as DamageEffects, deathMessageType as DeathMessageType) as DamageType
new DamageType(inIce, <constant:minecraft:damage/damage_scaling:always>, 0.1, <constant:minecraft:damage/damage_effects:freezing>, <constant:minecraft:damage/death_message_type:default>);

Parameter	Type	Description
Parameter msgId	Type string	Description The unlocalized name of this type
Parameter scaling	Type DamageScaling	Description The damage scaling used by this type
Parameter exhaustion	Type float	Description How much exhaustion does this type cause
Parameter effects	Type DamageEffects	Description The effect of this type
Parameter deathMessageType	Type DeathMessageType	Description The type of death message to send

Name	Type	Has Getter	Has Setter
Name deathMessageType	Type DeathMessageType	Has Getter true	Has Setter false
Name effects	Type DamageEffects	Has Getter true	Has Setter false
Name exhaustion	Type float	Has Getter true	Has Setter false
Name msgId	Type string	Has Getter true	Has Setter false
Name scaling	Type DamageScaling	Has Getter true	Has Setter false