what is flux-standard-action fr?

Flux Standard Action (FSA) is a specification that defines a consistent shape for action objects in JavaScript applications that use Flux or Redux for state management. In those patterns, an "action" is a plain JavaScript object that signals something has happened in the app, like a user submitting a form, and the rest of the system reacts to it. Without a shared convention, different libraries and codebases define these objects in incompatible ways, making it hard to build tools that work across projects. The spec is intentionally minimal. A compliant action must be a plain JavaScript object with a type field that identifies what kind of event occurred. It may optionally have a payload field for the data associated with the event, an error field set to true when the action represents a failure, and a meta field for any extra information that does not belong in the payload. No other fields are allowed. Treating errors as a first-class concept is a core motivation for the spec. Rather than creating separate action types for success and failure cases (like LOAD_SUCCESS and LOAD_FAILURE), FSA allows a single action type to carry an error flag, keeping the action type focused solely on identifying what happened rather than mixing in status information. The repository also ships a small npm package called flux-standard-action with two utility functions: isFSA(action) checks whether a given object conforms to the spec, and isError(action) checks whether an action represents an error. The README lists several compatible libraries, including redux-actions, redux-promise, and redux-rx, which are built to work with FSA-shaped actions.