Dig Versions Save

Added

• Introduce DryRun Option which, when set to true, disables invocation of functions supplied to Provide and Invoke. This option will be used to build no-op containers, for example for fx.ValidateApp method.

Added

• GraphViz visualization of the graph now includes names of packages next to constructors.
• Added a flatten modifier to group tags for slices to allow providing individual elements instead of the slice for a group value. See package doucmentation for more information.

Changed

• Drop library dependency on golang.org/x/lint.
• Support printing multi-line error messages with %+v.

Changed

• Migrated to Go modules.

Added

• Added Group option for Provide to add value groups to the container without rewriting constructors. See package doucmentation for more information.

Changed

• When an error graph is visualized, the graph is pruned so that the graph only contains failure nodes.
• Container visualization is now oriented from right to left.

Fixed

• Fixed a test that was causing Dig to be unusable with Go Modules.

Added

• Added a DeferAcyclicVerification container option that defers graph cycle detection until the next Invoke.

Changed

• Improved cycle-detection performance by 50x in certain degenerative cases.

Added

• Added Visualize function to visualize the state of the container in the GraphViz DOT format. This allows visualization of error types and the dependency relationships of types in the container.
• Added CanVisualizeError function to determine if an error can be visualized in the graph.
• Added Name option for Provide to add named values to the container without rewriting constructors. See package documentation for more information.

Changed

• name:"..." tags on nested Result Objects will now cause errors instead of being ignored.

• Improved messages for errors thrown by Dig under a many scenarios to be more informative.

• dig.In and dig.Out now support value groups, making it possible to produce many values of the same type from different constructors. See package documentation for more information.