Troubleshooting slow gulp-inject

For some reason, gulp-inject recently started taking a long time (3 minutes). Previously it would take a few seconds. I'm not sure where to begin when diagnosing this issue. Here's my output:[18:04:39] gulp-inject 1 files into index.html.[18:04:39] gulp-inject 277 files into index.html.[18:04:39] Finished 'inject' after 380 ms[18:04:39] Starting 'html'...[18:04:39] gulp-inject 1 files into index.html.[18:07:40] 'dist/' styles/app-9bd553d2.css 284.75 kB[18:07:40] 'dist/' styles/vendor-28fa652f.css 188.21 kB[18:07:40] 'dist/' scripts/vendor-23089...Read more