feat: allow config via package.json for vsce package/publish

Closes: #548

src/manifest.ts

@@ -78,6 +78,9 @@ export interface Manifest {
 	devDependencies?: { [name: string]: string };
 	private?: boolean;
 
+	// vsce
+	vsce?: any;
+
 	// not supported (npm)
 	// files?: string[];
 	// bin

src/package.ts

@@ -1623,6 +1623,8 @@ 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);
+	util.patchOptionsWithManifest(options, manifest);
+
 	await prepublish(cwd, manifest, options.useYarn);
 	await versionBump(options);
 

src/publish.ts

@@ -5,7 +5,7 @@ import { ExtensionQueryFlags, PublishedExtension } from 'azure-devops-node-api/i
 import { pack, readManifest, versionBump, prepublish } from './package';
 import * as tmp from 'tmp';
 import { getPublisher } from './store';
-import { getGalleryAPI, read, getPublishedUrl, log, getHubUrl } from './util';
+import { getGalleryAPI, read, getPublishedUrl, log, getHubUrl, patchOptionsWithManifest } from './util';
 import { Manifest } from './manifest';
 import { readVSIXPackage } from './zip';
 
@@ -54,6 +54,8 @@ export async function publish(options: IPublishOptions = {}): Promise<any> {
 	} else {
 		const cwd = options.cwd || process.cwd();
 		const manifest = await readManifest(cwd);
+		patchOptionsWithManifest(options, manifest);
+
 		await prepublish(cwd, manifest, options.useYarn);
 		await versionBump(options);
 

src/util.ts

@@ -5,6 +5,7 @@ import { IGalleryApi, GalleryApi } from 'azure-devops-node-api/GalleryApi';
 import chalk from 'chalk';
 import { PublicGalleryAPI } from './publicgalleryapi';
 import { ISecurityRolesApi } from 'azure-devops-node-api/SecurityRolesApi';
+import { Manifest } from './manifest';
 
 const __read = promisify<_read.Options, string>(_read);
 export function read(prompt: string, options: _read.Options = {}): Promise<string> {
@@ -146,3 +147,17 @@ export const log = {
 	warn: _log.bind(null, LogMessageType.WARNING) as LogFn,
 	error: _log.bind(null, LogMessageType.ERROR) as LogFn,
 };
+
+export function patchOptionsWithManifest(options: any, manifest: Manifest): void {
+	if (!manifest.vsce) {
+		return;
+	}
+
+	for (const key of Object.keys(manifest.vsce)) {
+		const optionsKey = key === 'yarn' ? 'useYarn' : key;
+
+		if (options[optionsKey] === undefined) {
+			options[optionsKey] = manifest.vsce[key];
+		}
+	}
+}