diff --git a/lib/publish.js b/lib/publish.js
index a2bd0bf..146f785 100644
--- a/lib/publish.js
+++ b/lib/publish.js
@@ -26,6 +26,7 @@ const await_to_js_1 = require("await-to-js");
 const crypto_1 = require("crypto");
 const promises_1 = __importDefault(require("fs/promises"));
 const path = __importStar(require("path"));
+const os = __importStar(require("os"));
 const xml2js_1 = require("xml2js");
 var PublishStep;
 (function (PublishStep) {
@@ -36,6 +37,12 @@ var PublishStep;
     PublishStep[PublishStep["Index"] = 4] = "Index";
     PublishStep[PublishStep["Registry"] = 5] = "Registry";
 })(PublishStep || (PublishStep = {}));
+//* Write a string to a file, creating the directory if it doesn't exist
+const writeFile = async (file, data) => {
+    const output = typeof data === "string" ? data : JSON.stringify(data, null, 2);
+    await promises_1.default.mkdir(path.dirname(file), { recursive: true });
+    await promises_1.default.writeFile(file, output + os.EOL, "utf8");
+};
 async function publish(src, dest) {
     let step = PublishStep.Init;
     try {
@@ -128,8 +135,7 @@ async function publish(src, dest) {
                 version.path = path.basename(version.path);
                 // Write typing file to out directory
                 const output = path.join(dest, path.basename(key));
-                await promises_1.default.mkdir(output, { recursive: true });
-                await promises_1.default.writeFile(path.join(output, version.path), data);
+                await writeFile(path.join(output, version.path), data);
             }
         }
         //* Generate an index.json for each module
@@ -137,8 +143,7 @@ async function publish(src, dest) {
         //* ------------------------------------------------------------
         for (const key of Object.keys(modules)) {
             const lib = modules[key];
-            await promises_1.default.mkdir(path.join(dest, path.basename(key)), { recursive: true });
-            await promises_1.default.writeFile(path.join(dest, path.basename(key), "index.json"), JSON.stringify(lib, null, 2));
+            await writeFile(path.join(dest, path.basename(key), "index.json"), lib);
         }
         //* Generate a package registry index.json for each module
         step = PublishStep.Registry;
@@ -151,7 +156,7 @@ async function publish(src, dest) {
                 url: lib.url,
             };
         }
-        await promises_1.default.writeFile(path.join(dest, "index.json"), JSON.stringify(registry, null, 2));
+        await writeFile(path.join(dest, "index.json"), registry);
     }
     catch (e) {
         console.error(`${PublishStep[step]}:`, e.message);
diff --git a/lib/publish.js.map b/lib/publish.js.map
index 92bd3e2..099df48 100644
--- a/lib/publish.js.map
+++ b/lib/publish.js.map
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/src/publish.ts b/src/publish.ts
index 2e40e50..1b782b3 100644
--- a/src/publish.ts
+++ b/src/publish.ts
@@ -2,6 +2,7 @@ import { to } from "await-to-js";
 import { createHash } from "crypto";
 import fs from "fs/promises";
 import * as path from "path";
+import * as os from "os";
 import { parseStringPromise } from "xml2js";
 
 export interface Library {
@@ -30,6 +31,13 @@ enum PublishStep {
   Registry,
 }
 
+//* Write a string to a file, creating the directory if it doesn't exist
+const writeFile = async (file: string, data: string|object) => {
+  const output = typeof data === "string" ? data : JSON.stringify(data, null, 2);
+  await fs.mkdir(path.dirname(file), { recursive: true });
+  await fs.writeFile(file, output + os.EOL, "utf8");
+}
+
 export default async function publish(src: string, dest: string) {
   let step = PublishStep.Init;
   try {
@@ -41,7 +49,7 @@ export default async function publish(src: string, dest: string) {
     for await (const d of await fs.opendir(src)) {
       if (d.isDirectory()) packages.push( path.join(src, d.name) );
     }
-    
+
     //* Collect library metadata
     step = PublishStep.Libraries;
     //* ------------------------------------------------------------
@@ -51,7 +59,7 @@ export default async function publish(src: string, dest: string) {
         //* Parse and verify library.json
         const [err, libFile] = await to(fs.readFile(path.join(m, "library.json")));
         if (err || !libFile) throw new Error('Missing library.json');
-        
+
         const lib = JSON.parse(libFile.toString()) as Library;
         if (!lib.name) throw new Error('Missing library name');
         if (!lib.url) throw new Error('Missing library url');
@@ -82,7 +90,7 @@ export default async function publish(src: string, dest: string) {
               if (library.$ && library.$["version"] && library.$["src"]) {
                 var shasum = createHash('sha1');
                 shasum.update(library.$["src"])
-  
+
                 modules[key].versions.push({
                   version: library.$["version"],
                   url: library.$["src"],
@@ -140,8 +148,7 @@ export default async function publish(src: string, dest: string) {
 
         // Write typing file to out directory
         const output = path.join(dest, path.basename(key));
-        await fs.mkdir(output, { recursive: true });
-        await fs.writeFile(path.join(output, version.path), data);
+        await writeFile(path.join(output, version.path), data);
       }
     }
 
@@ -150,8 +157,7 @@ export default async function publish(src: string, dest: string) {
     //* ------------------------------------------------------------
     for (const key of Object.keys(modules)) {
       const lib = modules[key];
-      await fs.mkdir(path.join(dest, path.basename(key)), { recursive: true });
-      await fs.writeFile(path.join(dest, path.basename(key), "index.json"), JSON.stringify(lib, null, 2));
+      await writeFile(path.join(dest, path.basename(key), "index.json"), lib);
     }
 
     //* Generate a package registry index.json for each module
@@ -165,10 +171,10 @@ export default async function publish(src: string, dest: string) {
         url: lib.url!,
       }
     }
-    await fs.writeFile(path.join(dest, "index.json"), JSON.stringify(registry, null, 2));
+    await writeFile(path.join(dest, "index.json"), registry);
 
   } catch (e) {
     console.error(`${PublishStep[step]}:`, (e as Error).message);
     process.exit(1);
   }
-}
\ No newline at end of file
+}