Function pruneCallbacks

dash/dash-renderer/src/actions/dependencies_ts.ts:403–438

(
    callbacks: T[],
    paths: any
)

});

export function pruneCallbacks<T extends ICallback>(
    callbacks: T[],
    paths: any
): {
    added: T[];
    removed: T[];
} {
    const [, removed] = partition(
        ({getOutputs, callback: {outputs}}) =>
            flatten(getOutputs(paths)).length === outputs.length,
        callbacks
    );

    const [, modified] = partition(
        ({getOutputs}) => !flatten(getOutputs(paths)).length,
        removed
    );

    const added: any = map(
        cb =>
            assoc(
                'changedPropIds',
                pickBy(
                    (_, propId) => getPath(paths, splitIdAndProp(propId).id),
                    cb.changedPropIds
                ),
                cb
            ),
        modified
    );

    return {
        added,
        removed
    };
}

export function resolveDeps(
    refKeys?: any,