Dart pub build mode not working
Try running pub build --no-minify.
$ pub help buildCopy and compile all Dart entrypoints in the 'web' directory.Usage: pub build [options]-h, --help Print usage information for this command. --[no-]minify Minify generated JavaScript. (defaults to on)
You can turn off js minification by adding a dart2js transformer in your pubspec.
For example
transformers:- $dart2js: minify: false