How to use the botbuilder-dialogs.CodeStep function in botbuilder-dialogs

constructor(dialogId: string, userState: UserState) {
        super(dialogId);

        // Add control flow dialogs (first added is initial dialog)
        this.add(new SequenceDialog(DELETE_ALARM_DLG, [
            new CodeStep(async (dc, step) => {
                // Divert to appropriate dialog
                const user = userState.get(dc.context) as AlarmUser;
                if (user.alarms.length > 1) {
                    return await dc.begin(DELETE_ALARM_MULTI_DLG);
                } else if (user.alarms.length === 1) {
                    return await dc.begin(DELETE_ALARM_SINGLE_DLG);
                } else {
                    await dc.context.sendActivity(`No alarms set to delete.`);
                    return await dc.end();
                }
            })
        ]));
        
        this.add(new SequenceDialog(DELETE_ALARM_MULTI_DLG, [
            new CodeStep('choice', async (dc, step) => {
                // Compute list of choices based on alarm titles

constructor(dialogId, userState) {
        super(dialogId);
        // Add control flow dialogs (first added is initial dialog)
        this.add(new botbuilder_dialogs_1.SequenceDialog(SHOW_ALARMS_DLG, [
            new botbuilder_dialogs_1.CodeStep((dc, step) => __awaiter(this, void 0, void 0, function* () {
                let msg = `No alarms found.`;
                const user = userState.get(dc.context);
                if (user.alarms.length > 0) {
                    msg = `**Current Alarms**\n\n`;
                    let connector = '';
                    user.alarms.forEach((alarm) => {
                        msg += connector + `- ${alarm.title} (${moment(alarm.time).format("ddd, MMM Do, h:mm a")})`;
                        connector = '\n';
                    });
                }
                yield dc.context.sendActivity(msg);
                return yield dc.end();
            }))
        ]));
    }
}

alarm.time = time.toISOString();
        
                // Alarm completed so set alarm.
                const user = userState.get(dc.context) as AlarmUser;
                user.alarms.push(alarm);
                
                // Confirm to user
                await dc.context.sendActivity(`Your alarm named "${alarm.title}" is set for "${moment(alarm.time).format("ddd, MMM Do, h:mm a")}".`);
                await dc.end();
            }
        ]);

        this.dialogs.add('addAlarm', new Sequence([
            new FillFieldStep('title', 'titlePrompt', `What would you like to call your alarm?`),
            new FillFieldStep('time', 'timePrompt', `What time would you like to set the alarm for?`),
            new CodeStep(async (dc, step) => {
                // Convert to Alarm
                const alarm: Alarm = {
                    title: step.form['title'],
                    time: step.form['time'].toISOString()
                };

                // Set alarm.
                const user = userState.get(dc.context) as AlarmUser;
                user.alarms.push(alarm);

                // Confirm to user
                await dc.context.sendActivity(`Your alarm named "${alarm.title}" is set for "${moment(alarm.time).format("ddd, MMM Do, h:mm a")}".`);
                await dc.end();
            })
        ]));

new CodeStep(async (dc, step) => {
                // Divert to appropriate dialog
                const user = userState.get(dc.context) as AlarmUser;
                if (user.alarms.length > 1) {
                    return await dc.begin(DELETE_ALARM_MULTI_DLG);
                } else if (user.alarms.length === 1) {
                    return await dc.begin(DELETE_ALARM_SINGLE_DLG);
                } else {
                    await dc.context.sendActivity(`No alarms set to delete.`);
                    return await dc.end();
                }
            })
        ]));
        
        this.add(new SequenceDialog(DELETE_ALARM_MULTI_DLG, [
            new CodeStep('choice', async (dc, step) => {
                // Compute list of choices based on alarm titles
                const user = userState.get(dc.context) as AlarmUser;
                const choices = user.alarms.map((value) => value.title);
        
                // Prompt user for choice (force use of "list" style)
                const prompt = `Which alarm would you like to delete? Say "cancel" to quit.`;
                return await dc.prompt(CHOICE_PROMPT_DLG, prompt, choices);
            }),
            new CodeStep(async (dc, step) => {
                // Delete alarm by position
                const choice = step.values['choice'];
                const user = userState.get(dc.context);
                if (choice.index < user.alarms.length) { user.alarms.splice(choice.index, 1) }
        
                // Notify user of delete
                await dc.context.sendActivity(`Deleted "${choice.value}" alarm.`);

constructor(dialogId: string, userState: UserState) {
        super(dialogId);

        // Add control flow dialogs (first added is initial dialog)
        this.add(new SequenceDialog(SHOW_ALARMS_DLG, [
            new CodeStep(async (dc, step) => {
                let msg = `No alarms found.`;
                const user = userState.get(dc.context) as AlarmUser;
                if (user.alarms.length > 0) {
                    msg = `**Current Alarms**\n\n`;
                    let connector = '';
                    user.alarms.forEach((alarm) => {
                        msg += connector + `- ${alarm.title} (${moment(alarm.time).format("ddd, MMM Do, h:mm a")})`;
                        connector = '\n';
                    });
                }
                await dc.context.sendActivity(msg);
                return await dc.end();
            })
        ]));
    }
}

// Divert to appropriate dialog
                const user = userState.get(dc.context);
                if (user.alarms.length > 1) {
                    return yield dc.begin(DELETE_ALARM_MULTI_DLG);
                }
                else if (user.alarms.length === 1) {
                    return yield dc.begin(DELETE_ALARM_SINGLE_DLG);
                }
                else {
                    yield dc.context.sendActivity(`No alarms set to delete.`);
                    return yield dc.end();
                }
            }))
        ]));
        this.add(new botbuilder_dialogs_1.SequenceDialog(DELETE_ALARM_MULTI_DLG, [
            new botbuilder_dialogs_1.CodeStep('choice', (dc, step) => __awaiter(this, void 0, void 0, function* () {
                // Compute list of choices based on alarm titles
                const user = userState.get(dc.context);
                const choices = user.alarms.map((value) => value.title);
                // Prompt user for choice (force use of "list" style)
                const prompt = `Which alarm would you like to delete? Say "cancel" to quit.`;
                return yield dc.prompt(CHOICE_PROMPT_DLG, prompt, choices);
            })),
            new botbuilder_dialogs_1.CodeStep((dc, step) => __awaiter(this, void 0, void 0, function* () {
                // Delete alarm by position
                const choice = step.values['choice'];
                const user = userState.get(dc.context);
                if (choice.index < user.alarms.length) {
                    user.alarms.splice(choice.index, 1);
                }
                // Notify user of delete
                yield dc.context.sendActivity(`Deleted "${choice.value}" alarm.`);

return yield dc.prompt(CHOICE_PROMPT_DLG, prompt, choices);
            })),
            new botbuilder_dialogs_1.CodeStep((dc, step) => __awaiter(this, void 0, void 0, function* () {
                // Delete alarm by position
                const choice = step.values['choice'];
                const user = userState.get(dc.context);
                if (choice.index < user.alarms.length) {
                    user.alarms.splice(choice.index, 1);
                }
                // Notify user of delete
                yield dc.context.sendActivity(`Deleted "${choice.value}" alarm.`);
                return yield dc.end();
            }))
        ]));
        this.add(new botbuilder_dialogs_1.SequenceDialog(DELETE_ALARM_SINGLE_DLG, [
            new botbuilder_dialogs_1.CodeStep('confirm', (dc, step) => __awaiter(this, void 0, void 0, function* () {
                const user = userState.get(dc.context);
                const alarm = user.alarms[0];
                return yield dc.prompt(CONFIRM_PROMPT_DLG, `Are you sure you want to delete the "${alarm.title}" alarm?`);
            })),
            new botbuilder_dialogs_1.CodeStep((dc, step) => __awaiter(this, void 0, void 0, function* () {
                const confirm = step.values['confirm'];
                if (confirm) {
                    const user = userState.get(dc.context);
                    user.alarms = [];
                    yield dc.context.sendActivity(`alarm deleted...`);
                }
                else {
                    yield dc.context.sendActivity(`ok...`);
                }
                return yield dc.end();
            }))

constructor(dialogId, userState) {
        super(dialogId);
        // Add control flow dialogs (first added is initial dialog)
        this.add(new botbuilder_dialogs_1.SequenceDialog(ADD_ALARM_DLG, [
            new botbuilder_dialogs_1.PromptStep('title', TITLE_PROMPT_DLG, `What would you like to call your alarm?`),
            new botbuilder_dialogs_1.PromptStep('time', TIME_PROMPT_DLG, `What time would you like to set the alarm for?`),
            new botbuilder_dialogs_1.CodeStep((dc, step) => __awaiter(this, void 0, void 0, function* () {
                // Convert to Alarm
                const alarm = {
                    title: step.values['title'],
                    time: step.values['time'].toISOString()
                };
                // Set alarm.
                const user = userState.get(dc.context);
                user.alarms.push(alarm);
                // Confirm to user
                yield dc.context.sendActivity(`Your alarm named "${alarm.title}" is set for "${moment(alarm.time).format("ddd, MMM Do, h:mm a")}".`);
                return yield dc.end();
            }))
        ]));
        // Add prompts
        this.add(new titlePrompt_1.TitlePrompt(TITLE_PROMPT_DLG));
        this.add(new timePrompt_1.TimePrompt(TIME_PROMPT_DLG));

return await dc.prompt(CHOICE_PROMPT_DLG, prompt, choices);
            }),
            new CodeStep(async (dc, step) => {
                // Delete alarm by position
                const choice = step.values['choice'];
                const user = userState.get(dc.context);
                if (choice.index < user.alarms.length) { user.alarms.splice(choice.index, 1) }
        
                // Notify user of delete
                await dc.context.sendActivity(`Deleted "${choice.value}" alarm.`);
                return await dc.end();
            })
        ]));

        this.add(new SequenceDialog(DELETE_ALARM_SINGLE_DLG, [
            new CodeStep('confirm', async (dc, step) => {
                const user = userState.get(dc.context) as AlarmUser;
                const alarm = user.alarms[0];
                return await dc.prompt(CONFIRM_PROMPT_DLG, `Are you sure you want to delete the "${alarm.title}" alarm?`);
            }),
            new CodeStep(async (dc, step) => {
                const confirm = step.values['confirm'];
                if (confirm) {
                    const user = userState.get(dc.context) as AlarmUser;
                    user.alarms = [];
                    await dc.context.sendActivity(`alarm deleted...`);
                } else {
                    await dc.context.sendActivity(`ok...`);
                }
                return await dc.end();
            })
        ]));

constructor(dialogId: string, userState: UserState) {
        super(dialogId);

        // Add control flow dialogs (first added is initial dialog)
        this.add(new SequenceDialog(ADD_ALARM_DLG, [
            new PromptStep('title', TITLE_PROMPT_DLG, `What would you like to call your alarm?`),
            new PromptStep('time', TIME_PROMPT_DLG, `What time would you like to set the alarm for?`),
            new CodeStep(async (dc, step) => {
                // Convert to Alarm
                const alarm: Alarm = {
                    title: step.values['title'],
                    time: step.values['time'].toISOString()
                };

                // Set alarm.
                const user = userState.get(dc.context) as AlarmUser;
                user.alarms.push(alarm);

                // Confirm to user
                await dc.context.sendActivity(`Your alarm named "${alarm.title}" is set for "${moment(alarm.time).format("ddd, MMM Do, h:mm a")}".`);
                return await dc.end();
            })
        ]));