Add scripts and infra required to get Foundry intellisense working

.env.template

@@ -0,0 +1,2 @@
+# The absolute path to the Foundry installation to create symlinks to
+FOUNDRY_ROOT=""

.gitignore

@@ -17,6 +17,8 @@ lerna-debug.log*
 node_modules
 /*.dist
 *.local
+.env
+/foundry
 
 # Editor directories and files
 .vscode/*

augments.d.ts

@@ -0,0 +1,14 @@
+declare global {
+	class Hooks extends foundry.helpers.Hooks {};
+	const fromUuid = foundry.utils.fromUuid;
+}
+
+interface Actor {
+	/** The system-specific data */
+	system: any;
+};
+
+interface Item {
+	/** The system-specific data */
+	system: any;
+};

jsconfig.json

@@ -1,10 +1,22 @@
 {
 	"compilerOptions": {
 		"module": "ES2020",
-		"target": "ES2020"
+		"target": "ES2020",
+		"types": [
+			"./augments.d.ts"
+		],
+		"paths": {
+			"@client/*": ["./foundry/client/*"],
+			"@common/*": ["./foundry/common/*"],
+		}
 	},
 	"exclude": ["node_modules", "**/node_modules/*"],
-	"include": ["module/**/*"],
+	"include": [
+		"module/**/*",
+		"foundry/client/client.mjs",
+		"foundry/client/global.d.mts",
+		"foundry/common/primitives/global.d.mts"
+	],
 	"typeAcquisition": {
 		"include": ["joi"]
 	}

scripts/linkFoundry.mjs

@@ -0,0 +1,47 @@
+import { existsSync } from "fs";
+import { symlink, unlink } from "fs/promises";
+import { join } from "path";
+import { config } from "dotenv";
+
+config({ quiet: true });
+
+const root = process.env.FOUNDRY_ROOT;
+
+// Early exit
+if (!root) {
+	console.error(`Must provide a FOUNDRY_ROOT environment variable`);
+	process.exit(1);
+};
+
+// Assert Foundry exists
+if (!existsSync(root)) {
+	console.error(`Foundry root not found.`);
+	process.exit(1);
+};
+
+// Removing existing symlink
+if (existsSync(`foundry`)) {
+	console.log(`Attempting to unlink foundry instance`);
+	try {
+		await unlink(`foundry`);
+	} catch {
+		console.error(`Failed to unlink foundry folder.`);
+		process.exit(1);
+	};
+};
+
+// Account for if the root is pointing at an Electron install
+let targetRoot = root;
+if (existsSync(join(root, `resources`, `app`))) {
+	console.log(`Switching to use the "${root}/resources/app" directory`);
+	targetRoot = join(root, `resources`, `app`);
+};
+
+// Create symlink
+console.log(`Linking foundry source into folder`)
+try {
+	await symlink(targetRoot, `foundry`);
+} catch (e) {
+	console.error(e);
+	process.exit(1);
+};