Bower resolutions vs exact version pinning for transitive semver conflicts

Bower's flat dependency resolver installs a single version of each package into bower_components, so when two direct dependencies declare incompatible semver ranges for a shared transitive package, the resolver cannot place both versions side-by-side and instead selects one while emitting a conflict warning. Because Bower is no longer actively maintained, the documented mechanisms to control this outcome in existing projects are the resolutions field in the root bower.json and exact version pinning in dependency declarations.

Using resolutions lets a developer explicitly force a specific version for a conflicted package, but the field only applies to the top-level manifest and does not propagate into transitive dependencies' own conflict declarations. Exact version pinning or narrowed semver ranges avoid the collision entirely, yet they trade away automatic patch and minor updates and increase long-term maintenance overhead. Because Bower's default tie-breaking behavior when no resolution is specified is version-sensitive and not fully specified, installs may not be reproducible across environments or dependency orderings.

The unresolved decision is whether to accept the limited, top-level-only scope of resolutions to preserve broader semver ranges elsewhere, or to enforce exact pins across the dependency graph to guarantee deterministic installs at the cost of update flexibility. Which approach better balances reproducibility against maintenance burden when a forced flat version risks silently breaking a package that expects a different major version of a shared dependency? Does the unspecified default tie-breaking behavior make resolutions mandatory for any project with known transitive conflicts, or is exact pinning the only reliable path to reproducible bower_components?