Thank you for the advice, it seems to point in the right direction as a asset-builder issue, like stated here .
I have luckily found also an Austin Pray’s hint in this post so i used:
“overrides”: {
“masonry”: {
“main”: [“./dist/masonry.pkgd.min.js”],
“dependencies”: {}
}
}
And i got at least my main javascript back to work. For what i had understand, these issues are probably caused by library’s dependencies misconfigured in package’s bower.json . Not already checked if Masonry is properly working but now it should.
Steep learning curve with these tools…