diff --git a/resources/build-deno.js b/resources/build-deno.js
index b416e35c3b..f0479a858a 100644
--- a/resources/build-deno.js
+++ b/resources/build-deno.js
@@ -4,13 +4,12 @@ const fs = require('fs');
 const path = require('path');
 
 const babel = require('@babel/core');
-const prettier = require('prettier');
 
-const { readdirRecursive, showDirStats } = require('./utils.js');
-
-const prettierConfig = JSON.parse(
-  fs.readFileSync(require.resolve('../.prettierrc'), 'utf-8'),
-);
+const {
+  writeGeneratedFile,
+  readdirRecursive,
+  showDirStats,
+} = require('./utils.js');
 
 if (require.main === module) {
   fs.rmSync('./denoDist', { recursive: true, force: true });
@@ -34,8 +33,3 @@ if (require.main === module) {
 
   showDirStats('./denoDist');
 }
-
-function writeGeneratedFile(filepath, body) {
-  const formatted = prettier.format(body, { filepath, ...prettierConfig });
-  fs.writeFileSync(filepath, formatted);
-}
diff --git a/resources/build-npm.js b/resources/build-npm.js
index fe5e372f5e..7ff0cf079c 100644
--- a/resources/build-npm.js
+++ b/resources/build-npm.js
@@ -6,13 +6,12 @@ const assert = require('assert');
 
 const ts = require('typescript');
 const babel = require('@babel/core');
-const prettier = require('prettier');
 
-const { readdirRecursive, showDirStats } = require('./utils.js');
-
-const prettierConfig = JSON.parse(
-  fs.readFileSync(require.resolve('../.prettierrc'), 'utf-8'),
-);
+const {
+  writeGeneratedFile,
+  readdirRecursive,
+  showDirStats,
+} = require('./utils.js');
 
 if (require.main === module) {
   fs.rmSync('./npmDist', { recursive: true, force: true });
@@ -90,11 +89,6 @@ if (require.main === module) {
   showDirStats('./npmDist');
 }
 
-function writeGeneratedFile(filepath, body) {
-  const formatted = prettier.format(body, { filepath, ...prettierConfig });
-  fs.writeFileSync(filepath, formatted);
-}
-
 function babelBuild(srcPath, options) {
   const { code } = babel.transformFileSync(srcPath, {
     babelrc: false,
diff --git a/resources/gen-version.js b/resources/gen-version.js
index 944b51401d..b73621bce7 100644
--- a/resources/gen-version.js
+++ b/resources/gen-version.js
@@ -1,9 +1,9 @@
 'use strict';
 
-const fs = require('fs');
-
 const { version } = require('../package.json');
 
+const { writeGeneratedFile } = require('./utils.js');
+
 const versionMatch = /^(\d+)\.(\d+)\.(\d+)-?(.*)?$/.exec(version);
 if (!versionMatch) {
   throw new Error('Version does not match semver spec: ' + version);
@@ -34,5 +34,5 @@ export const versionInfo = Object.freeze({
 `;
 
 if (require.main === module) {
-  fs.writeFileSync('./src/version.ts', body.trim() + '\n');
+  writeGeneratedFile('./src/version.ts', body);
 }
diff --git a/resources/utils.js b/resources/utils.js
index 253212c2d6..37cd83e801 100644
--- a/resources/utils.js
+++ b/resources/utils.js
@@ -4,6 +4,8 @@ const fs = require('fs');
 const path = require('path');
 const childProcess = require('child_process');
 
+const prettier = require('prettier');
+
 function exec(command, options) {
   const output = childProcess.execSync(command, {
     maxBuffer: 10 * 1024 * 1024, // 10MB
@@ -80,8 +82,18 @@ function showDirStats(dirPath) {
   );
 }
 
+const prettierConfig = JSON.parse(
+  fs.readFileSync(require.resolve('../.prettierrc'), 'utf-8'),
+);
+
+function writeGeneratedFile(filepath, body) {
+  const formatted = prettier.format(body, { filepath, ...prettierConfig });
+  fs.writeFileSync(filepath, formatted);
+}
+
 module.exports = {
   exec,
   readdirRecursive,
   showDirStats,
+  writeGeneratedFile,
 };