in lib/MaterialTools.ts [148:159]
private _writeFile(destination: string, content: string, license = ''): Promise<string> {
return new Promise((resolve, reject) => {
fse.mkdirp(path.dirname(destination), error => {
if (error) {
reject(error);
} else {
fse.writeFileSync(destination, license + content);
resolve(destination);
}
});
});
}