diff --git a/build/.moduleignore b/build/.moduleignore
new file mode 100644
index 00000000000..489d4709f0a
--- /dev/null
+++ b/build/.moduleignore
@@ -0,0 +1,38 @@
+
+# additional cleanup rules for node modules, .gitignore style
+
+**/docs/**
+**/example/**
+**/examples/**
+**/test/**
+**/tests/**
+
+**/History.md
+**/CHANGELOG.md
+**/README.md
+**/readme.md
+**/readme.markdown
+
+**/*.ts
+!typescript/**/*.d.ts
+
+jschardet/dist/**
+
+es6-promise/lib/**
+
+vscode-textmate/webpack.config.js
+
+zone.js/dist/**
+!zone.js/dist/zone-node.js
+
+# https://github.com/xtermjs/xterm.js/issues/3137
+xterm/src/**
+xterm/tsconfig.all.json
+
+# https://github.com/xtermjs/xterm.js/issues/3138
+xterm-addon-*/src/**
+xterm-addon-*/fixtures/**
+xterm-addon-*/out/**
+xterm-addon-*/out-test/**
+
+
diff --git a/build/.nativeignore b/build/.nativeignore
index 0e0eb08b283..a27530745f3 100644
--- a/build/.nativeignore
+++ b/build/.nativeignore
@@ -46,6 +46,7 @@ spdlog/build/**
 spdlog/deps/**
 spdlog/src/**
 spdlog/test/**
+spdlog/*.yml
 !spdlog/build/Release/*.node
 
 jschardet/dist/**
@@ -72,6 +73,7 @@ node-pty/build/**
 node-pty/src/**
 node-pty/tools/**
 node-pty/deps/**
+node-pty/scripts/**
 !node-pty/build/Release/*.exe
 !node-pty/build/Release/*.dll
 !node-pty/build/Release/*.node
diff --git a/build/.webignore b/build/.webignore
index 1035cb291cc..553d445f3f6 100644
--- a/build/.webignore
+++ b/build/.webignore
@@ -8,6 +8,10 @@
 **/LICENSE
 **/CONTRIBUTORS
 
+**/docs/**
+**/example/**
+**/examples/**
+
 jschardet/index.js
 jschardet/src/**
 jschardet/dist/jschardet.js
diff --git a/build/gulpfile.vscode.js b/build/gulpfile.vscode.js
index d046aa71ed2..00e6940a941 100644
--- a/build/gulpfile.vscode.js
+++ b/build/gulpfile.vscode.js
@@ -205,9 +205,10 @@ function packageTask(platform, arch, sourceFolderName, destinationFolderName, op
 		const dependenciesSrc = _.flatten(productionDependencies.map(d => path.relative(root, d.path)).map(d => [`${d}/**`, `!${d}/**/{test,tests}/**`]));
 
 		const deps = gulp.src(dependenciesSrc, { base: '.', dot: true })
-			.pipe(filter(['**', '!**/package-lock.json']))
+			.pipe(filter(['**', '!**/package-lock.json', '!**/yarn.lock']))
 			.pipe(util.cleanNodeModules(path.join(__dirname, '.nativeignore')))
-			.pipe(createAsar(path.join(process.cwd(), 'node_modules'), ['**/*.node', '**/vscode-ripgrep/bin/*', '**/node-pty/build/Release/*', '**/*.wasm'], 'app/node_modules.asar'));
+			.pipe(util.cleanNodeModules(path.join(__dirname, '.moduleignore')))
+			.pipe(createAsar(path.join(process.cwd(), 'node_modules'), ['**/*.node', '**/vscode-ripgrep/bin/*', '**/node-pty/build/Release/*', '**/*.wasm'], 'node_modules.asar'));
 
 		let all = es.merge(
 			packageJsonStream,
diff --git a/build/lib/asar.ts b/build/lib/asar.ts
index 38fbc634e99..07b321fd41d 100644
--- a/build/lib/asar.ts
+++ b/build/lib/asar.ts
@@ -87,8 +87,7 @@ export function createAsar(folderPath: string, unpackGlobs: string[], destFilena
 			// The file goes outside of xx.asar, in a folder xx.asar.unpacked
 			const relative = path.relative(folderPath, file.path);
 			this.queue(new VinylFile({
-				cwd: folderPath,
-				base: folderPath,
+				base: '.',
 				path: path.join(destFilename + '.unpacked', relative),
 				stat: file.stat,
 				contents: file.contents
@@ -117,8 +116,7 @@ export function createAsar(folderPath: string, unpackGlobs: string[], destFilena
 			out.length = 0;
 
 			this.queue(new VinylFile({
-				cwd: folderPath,
-				base: folderPath,
+				base: '.',
 				path: destFilename,
 				contents: contents
 			}));