assemblyscript/scripts/clean.js

var fs = require("fs");
var glob = require("glob");

glob("*", { cwd: __dirname + "/../dist" }, (err, matches) => {
  if (err)
    console.log("Failed to list files in 'dist/': " + err.message);
  else
    matches.forEach(match => {
      fs.unlink(__dirname + "/../dist/" + match, err => {
        if (err)
          console.log("Failed to delete 'dist/" + match + "': " + err.message);
        else
          console.log("Deleted 'dist/" + match + "'");
      });
    });
});