venkatperi

/**
 * For a fixed sized array, adds item to the end of
 * an array and drops elements from the front, if needed
 *
 * @param item {T}- to be added to the end of the array
 * @param arr {T[]} - the array
 * @param size {number} - Max size of the array.
 * @return {T[]} The updated array
 */
function pushFixed<T>(item: T, arr: Array<T>, size: number): Array<T> {

venkatperi

 ['enter#*_#idle', () => keepState()
    .emit('init')
    .data({
        errors: {$set: []},
        response: {$set: null},
        sessionId: {$set: uniqid()}
    })],

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  ['cast#start#idle', ({event}) =>
            nextState('running')
                .data({request: {$set: event.extra}})],

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 ['enter#*_#running', ({data}) => {
            const res = keepState().emit('run', data)
            return data.timeout ? res.stateTimeout(data.timeout) : res
        }],

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 ['cast#done/:sessionId#running', ({data, args, event}) =>
            args.sessionId === data.sessionId
            ? nextState('done/done').data({response: {$set: event.extra}})
            : keepState()],

venkatperi

 ['cast#done/:sessionId#running', ({data, args, event}) =>
            args.sessionId === data.sessionId
            ? nextState('done/done').data({response: {$set: event.extra}})
            : keepState()],

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  ['cast#reset#running', () =>
            nextState('done/cancel')
                .postpone()],

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 ['cast#cancel#running', ({event}) =>
            nextState('done/cancel')
                .data({errors: {$push: [event.extra]}})],

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 ['cast#error/:sessionId#running', ({args, data, event}) =>
            args.sessionId === data.sessionId
            ? nextState('done/error').data({errors: {$push: [event.extra]}})
            : keepState()],

venkatperi

 ['enter#*_#done/:status', ({args, data}) =>
            keepState()
                .emit(args.status, data)],