gobreaking

Overview ¶

gobreaking reports breaking changes in a Git repository.

Below is the exhaustive list of changes that are considered breaking. It applies exclusively to exposed names.

• Removing a name (constant, type, variable, function).
• Changing the kind of a name.
• Adding or removing a method in an interface.
• Adding or removing a parameter in a function or interface.
• Changing the type of a parameter or result in a function or interface.
• Adding or removing a result in a function or interface.
• Changing the type of an exported struct field.
• Removing an exported field from a struct.
• Adding an unexported field to a struct containing only exported fields.
• Adding an exported field before the last field of a struct containing only exported fields.
• Repositioning a field in a struct containing only exported fields.

gobreaking can be invoked two ways:

By providing one argument treeish: it reports the breaking changes between treeish and the working directory.

By providing two arguments treeish1 and treeish2: it reports the breaking changes between treeish1 and treeish2.

The exit code of gobreaking is 2 for erroneous invocation, 1 if a breaking change was reported, and 0 otherwise.