This is a DIM specific script that is run from the Chrome developer tools console in an active DIM tab

DIM Weapon Export.js

// This is a DIM specific script that can be run in the Developer Console in Chrome on a DIM tab.
// it writes out a csv string with name and perks for weapons.

// FUNCTIONS
function isWeapon(myItem) {
	return myItem.type === "Primary" ||
    		myItem.type === "Special" ||
    		myItem.type === "Heavy" &&
           myItem.name.indexOf("Engram") == -1; // Filtering out various Engrams
};

function isRealPerk(myItem) { // Omitting "perks" I don't really care about
	return myItem !== "Infuse" && 
           myItem !== "Ascend" &&
           myItem !== "Kinetic Damage" && 
	       myItem !== "Solar Damage" && 
	       myItem !== "Arc Damage" &&
	       myItem !== "Void Damage" && 
	       myItem !== "Upgrade Damage" &&
           myItem !== "Red Chroma" &&
           myItem !== "Blue Chroma" &&
           myItem !== "Yellow Chroma" &&
           myItem !== "White Chroma" &&
           myItem !== "Deactivate Chroma";
};

function getItemString(item) {
	var descriptionString = item.id + ',' +
                            ',' + // Placeholder for my Keep/Trash column
                            item.locked + ',' +
                            item.classTypeName + ',' + 
			                item.tier + ',' + 
                            item.year + ',' + 
			                item.sort + ',' + 
			                item.type + ',' + 
                            item.weaponClassName + ',' + 
			                item.name;
	//item.dmg + ',';
	
	switch (item.name) {
		case "Murmur":
			descriptionString = descriptionString + ',' + "solar/arc"
			break;
		default :
			if (item.dmg === null) { // Handles some Exotic primaries
				descriptionString = descriptionString + ',' + "kinetic"
			} else {
				descriptionString = descriptionString + ',' + item.dmg
			};
	};
	
	if (item.primStat == undefined) { // Handles the few pieces of armor that have no light value (e.g. SRL Legs)
		descriptionString = descriptionString + ',' + '0';
	} else {
		descriptionString = descriptionString + ',' + item.primStat.value;
	};
	
	return descriptionString;
};

function getPerkList(testObject) {
	
	if (!!testObject.talentGrid) { // Handles the items of armor that have no perks (e.g. Year 1 class items)
		
		var perkList = [];
		var color = "None";
		
		for (j = 0; j < testObject.talentGrid.nodes.length; j++) {
			if (testObject.talentGrid.nodes[j].hidden == false) { // Ignore hidden perks
				perkList.push(testObject.talentGrid.nodes[j].name);
			};
		};
		
		color = getColor(perkList);
		
		perkList = perkList.filter(isRealPerk);
		perkList.unshift(color); // Add color to the front of the perkList
		return perkList;
    
	} else {
		return "None,None";
	};
};

function getColor(perks) {
	
	var chromaColor = "None";
	
	for (k = 0; k < perks.length; k++) {
		
		switch (perks[k]) {
			case "Red Chroma":
				chromaColor = "Red";
				break;
			case "Blue Chroma":
				chromaColor = "Blue";
				break;
			case "Yellow Chroma":
				chromaColor = "Yellow";
				break;
			case "White Chroma":
				chromaColor = "White";
				break;
		};
	};
	return chromaColor;
};

/////////////////////////////////////////////////////////////////////

// MAIN CODE
var stuff = angular.element(document.body).injector().get('dimStoreService').getStores();
var guardian1_Items = (stuff.length >= 2) ? stuff[0].items : [];
var guardian2_Items = (stuff.length >= 3) ? stuff[1].items : [];
var guardian3_Items = (stuff.length >= 4) ? stuff[2].items : [];
var vaultItems = stuff[stuff.length - 1].items;
var allItems = guardian1_Items.concat(guardian2_Items, guardian3_Items, vaultItems);

var allFilteredItems = allItems.filter(isWeapon); // Filter for only weapons

var descString = "IndexID,Status,IsLocked,Class,Tier,Year,Weapon,Type,Subclass,Name,DamageType,Light,Color,Perks" + '\n';

for (i = 0; i < allFilteredItems.length; i++) {
	
	descString = descString + 
				 getItemString(allFilteredItems[i]) + ',' +
				 getPerkList(allFilteredItems[i]) + 
				 '\n';
};

descString;

I'm entering this is DIM and I'm getting an error.

VM228:185 Uncaught TypeError: Cannot read property 'vm' of undefined(…)(anonymous function) @ VM228:185

Any help would be appreciated. This is a great idea.