Computation writes variables available/computed to the creature document

app/imports/api/creature/computation/writeCreatureVariables.js

@@ -0,0 +1,33 @@
+import { pick, forOwn } from 'lodash';
+import Creatures from '/imports/api/creature/Creatures.js';
+
+export default function writeCreatureVariables(memo, creatureId) {
+  const fields = [
+    'name',
+    'attributeType',
+    'baseValue',
+    'damage',
+    'decimal',
+    'reset',
+    'resetMultiplier',
+    'value',
+    'mod',
+    'ability',
+    'skillType',
+    'baseProficiency',
+    'abilityMod',
+    'advantage',
+    'passiveBonus',
+    'proficiency',
+    'conditionalBenefits',
+    'rollBonuses',
+    'fail',
+  ];
+
+  memo.creatureVariables = {};
+  forOwn(memo.statsByVariableName, (stat, variableName) => {
+    let condensedStat = pick(stat, fields);
+    memo.creatureVariables[variableName] = condensedStat;
+  });
+  Creatures.update(creatureId, {$set: {variables: memo.creatureVariables}});
+}