Migrating `Deno.run` to `Deno.command` with `readlines`

 browserProcess = Deno.run({
  cmd: buildArgs, // eg chrome exe path, then options
  stderr: "piped",
  stdout: "piped",
});
for await (const line of readLines(browserProcess.stderr!)) {

 browserProcess = Deno.run({
  cmd: buildArgs, // eg chrome exe path, then options
  stderr: "piped",
  stdout: "piped",
});
for await (const line of readLines(browserProcess.stderr!)) {