clients: retire extension; replace with PSI launcher

build/build-extension.js

@@ -10,7 +10,6 @@ const mkdir = fs.promises.mkdir;
 
 const archiver = require('archiver');
 const cpy = require('cpy');
-const makeDir = require('make-dir');
 const browserify = require('browserify');
 const path = require('path');
 
@@ -30,7 +29,7 @@ async function buildEntryPoint() {
   const outFile = `${distDir}/scripts/${distName}`;
   const bundleStream = browserify(inFile).bundle();
 
-  await makeDir(path.dirname(outFile));
+  await mkdir(path.dirname(outFile), {recursive: true});
   return new Promise((resolve, reject) => {
     const writeStream = fs.createWriteStream(outFile);
     writeStream.on('finish', resolve);