I used Yeoman and Gulp to generate a project. The generator of the project is angularjs. I checked bootstrap, but after I ran gulp serve, I did open the viewer automatically, but the html file displayed did not introduce bootstrap and angularjs to solve the problem. . .
Gulpfile.js should be correct, after all, it is a project automatically generated by yeoman.
He had problems with generator angular, which seems to have something to do with the introduction of bower component. Before, I failed to introduce bt with grunt plus yoeman plus angular. You found the same problem in yoeman’s github issues, reported by the people of Is there any.