Function determineChangedProps

dash/dash-renderer/src/wrapper/selectors.ts:45–81

(
    state: any,
    strPath: string
)

};

function determineChangedProps(
    state: any,
    strPath: string
): ChangedPropsRecord {
    let combinedHash = 0;
    let renderType: any; // Default render type, adjust as needed
    const changedProps: Record<string, any> = {};
    Object.entries(state.layoutHashes).forEach(([updatedPath, pathHash]) => {
        const [descendant, remainingSegments] = isFirstLevelPropsChild(
            updatedPath,
            strPath
        );
        if (descendant) {
            const previousHash: any = pathOr({}, [updatedPath], previousHashes);
            combinedHash += pathOr(0, ['hash'], pathHash);
            if (previousHash !== pathHash) {
                if (updatedPath !== strPath) {
                    Object.assign(changedProps, {[remainingSegments[1]]: true});
                    renderType = 'components';
                } else {
                    Object.assign(
                        changedProps,
                        pathOr({}, ['changedProps'], pathHash)
                    );
                    renderType = pathOr({}, ['renderType'], pathHash);
                }
                previousHashes[updatedPath] = pathHash;
            }
        }
    });

    return {
        hash: combinedHash,
        changedProps,
        renderType
    };
}

export const selectDashProps =
    (componentPath: DashLayoutPath) =>