fix: prepublish should run before version bump

closes #187

src/package.ts

@@ -1429,7 +1429,7 @@ function getDefaultPackageName(manifest: Manifest, options: IPackageOptions): st
 	return `${manifest.name}-${version}.vsix`;
 }
 
-async function prepublish(cwd: string, manifest: Manifest, useYarn?: boolean): Promise<void> {
+export async function prepublish(cwd: string, manifest: Manifest, useYarn?: boolean): Promise<void> {
 	if (!manifest.scripts || !manifest.scripts['vscode:prepublish']) {
 		return;
 	}
@@ -1468,11 +1468,7 @@ async function getPackagePath(cwd: string, manifest: Manifest, options: IPackage
 
 export async function pack(options: IPackageOptions = {}): Promise<IPackageResult> {
 	const cwd = options.cwd || process.cwd();
-
 	const manifest = await readManifest(cwd);
-
-	await prepublish(cwd, manifest, options.useYarn);
-
 	const files = await collect(manifest, options);
 	const jsFiles = files.filter(f => /\.js$/i.test(f.path));
 
@@ -1489,6 +1485,9 @@ export async function pack(options: IPackageOptions = {}): Promise<IPackageResul
 }
 
 export async function packageCommand(options: IPackageOptions = {}): Promise<any> {
+	const cwd = options.cwd || process.cwd();
+	const manifest = await readManifest(cwd);
+	await prepublish(cwd, manifest, options.useYarn);
 	await versionBump(options);
 
 	const { packagePath, files } = await pack(options);

src/publish.ts

@@ -1,6 +1,6 @@
 import * as fs from 'fs';
 import { ExtensionQueryFlags, PublishedExtension } from 'azure-devops-node-api/interfaces/GalleryInterfaces';
-import { pack, readManifest, versionBump } from './package';
+import { pack, readManifest, versionBump, prepublish } from './package';
 import * as tmp from 'tmp';
 import { getPublisher } from './store';
 import { getGalleryAPI, read, getPublishedUrl, log, getHubUrl } from './util';
@@ -51,6 +51,9 @@ export async function publish(options: IPublishOptions = {}): Promise<any> {
 			await _publish(packagePath, vsix.manifest, { ...options, target });
 		}
 	} else {
+		const cwd = options.cwd || process.cwd();
+		const manifest = await readManifest(cwd);
+		await prepublish(cwd, manifest, options.useYarn);
 		await versionBump(options);
 
 		if (options.targets) {