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https://github.com/10h30/odin-javascript-exercises.git
synced 2026-07-17 21:53:26 +09:00
remove timer and simon
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+260
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/**
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* `rawlist` type prompt
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*/
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var _ = require('lodash');
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var util = require('util');
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var chalk = require('chalk');
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var Base = require('./base');
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var Separator = require('../objects/separator');
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var observe = require('../utils/events');
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var Paginator = require('../utils/paginator');
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/**
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* Module exports
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*/
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module.exports = Prompt;
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/**
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* Constructor
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*/
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function Prompt() {
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Base.apply(this, arguments);
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if (!this.opt.choices) {
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this.throwParamError('choices');
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}
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this.validateChoices(this.opt.choices);
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// Add the default `help` (/expand) option
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this.opt.choices.push({
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key: 'h',
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name: 'Help, list all options',
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value: 'help'
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});
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this.opt.validate = function (choice) {
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if (choice == null) {
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return 'Please enter a valid command';
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}
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return choice !== 'help';
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};
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// Setup the default string (capitalize the default key)
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this.opt.default = this.generateChoicesString(this.opt.choices, this.opt.default);
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this.paginator = new Paginator();
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}
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util.inherits(Prompt, Base);
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/**
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* Start the Inquiry session
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* @param {Function} cb Callback when prompt is done
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* @return {this}
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*/
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Prompt.prototype._run = function (cb) {
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this.done = cb;
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// Save user answer and update prompt to show selected option.
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var events = observe(this.rl);
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var validation = this.handleSubmitEvents(
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events.line.map(this.getCurrentValue.bind(this))
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);
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validation.success.forEach(this.onSubmit.bind(this));
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validation.error.forEach(this.onError.bind(this));
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this.keypressObs = events.keypress.takeUntil(validation.success)
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.forEach(this.onKeypress.bind(this));
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// Init the prompt
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this.render();
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return this;
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};
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/**
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* Render the prompt to screen
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* @return {Prompt} self
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*/
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Prompt.prototype.render = function (error, hint) {
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var message = this.getQuestion();
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var bottomContent = '';
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if (this.status === 'answered') {
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message += chalk.cyan(this.answer);
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} else if (this.status === 'expanded') {
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var choicesStr = renderChoices(this.opt.choices, this.selectedKey);
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message += this.paginator.paginate(choicesStr, this.selectedKey, this.opt.pageSize);
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message += '\n Answer: ';
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}
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message += this.rl.line;
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if (error) {
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bottomContent = chalk.red('>> ') + error;
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}
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if (hint) {
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bottomContent = chalk.cyan('>> ') + hint;
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}
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this.screen.render(message, bottomContent);
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};
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Prompt.prototype.getCurrentValue = function (input) {
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if (!input) {
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input = this.rawDefault;
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}
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var selected = this.opt.choices.where({key: input.toLowerCase().trim()})[0];
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if (!selected) {
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return null;
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}
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return selected.value;
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};
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/**
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* Generate the prompt choices string
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* @return {String} Choices string
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*/
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Prompt.prototype.getChoices = function () {
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var output = '';
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this.opt.choices.forEach(function (choice) {
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output += '\n ';
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if (choice.type === 'separator') {
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output += ' ' + choice;
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return;
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}
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var choiceStr = choice.key + ') ' + choice.name;
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if (this.selectedKey === choice.key) {
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choiceStr = chalk.cyan(choiceStr);
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}
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output += choiceStr;
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}.bind(this));
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return output;
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};
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Prompt.prototype.onError = function (state) {
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if (state.value === 'help') {
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this.selectedKey = '';
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this.status = 'expanded';
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this.render();
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return;
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}
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this.render(state.isValid);
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};
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/**
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* When user press `enter` key
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*/
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Prompt.prototype.onSubmit = function (state) {
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this.status = 'answered';
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var choice = this.opt.choices.where({value: state.value})[0];
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this.answer = choice.short || choice.name;
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// Re-render prompt
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this.render();
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this.screen.done();
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this.done(state.value);
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};
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/**
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* When user press a key
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*/
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Prompt.prototype.onKeypress = function () {
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this.selectedKey = this.rl.line.toLowerCase();
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var selected = this.opt.choices.where({key: this.selectedKey})[0];
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if (this.status === 'expanded') {
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this.render();
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} else {
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this.render(null, selected ? selected.name : null);
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}
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};
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/**
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* Validate the choices
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* @param {Array} choices
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*/
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Prompt.prototype.validateChoices = function (choices) {
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var formatError;
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var errors = [];
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var keymap = {};
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choices.filter(Separator.exclude).forEach(function (choice) {
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if (!choice.key || choice.key.length !== 1) {
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formatError = true;
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}
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if (keymap[choice.key]) {
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errors.push(choice.key);
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}
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keymap[choice.key] = true;
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choice.key = String(choice.key).toLowerCase();
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});
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if (formatError) {
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throw new Error('Format error: `key` param must be a single letter and is required.');
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}
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if (keymap.h) {
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throw new Error('Reserved key error: `key` param cannot be `h` - this value is reserved.');
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}
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if (errors.length) {
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throw new Error('Duplicate key error: `key` param must be unique. Duplicates: ' +
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_.uniq(errors).join(', '));
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}
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};
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/**
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* Generate a string out of the choices keys
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* @param {Array} choices
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* @param {Number} defaultIndex - the choice index to capitalize
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* @return {String} The rendered choices key string
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*/
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Prompt.prototype.generateChoicesString = function (choices, defaultIndex) {
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var defIndex = choices.realLength - 1;
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if (_.isNumber(defaultIndex) && this.opt.choices.getChoice(defaultIndex)) {
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defIndex = defaultIndex;
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}
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var defStr = this.opt.choices.pluck('key');
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this.rawDefault = defStr[defIndex];
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defStr[defIndex] = String(defStr[defIndex]).toUpperCase();
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return defStr.join('');
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};
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/**
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* Function for rendering checkbox choices
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* @param {String} pointer Selected key
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* @return {String} Rendered content
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*/
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function renderChoices(choices, pointer) {
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var output = '';
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choices.forEach(function (choice) {
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output += '\n ';
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if (choice.type === 'separator') {
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output += ' ' + choice;
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return;
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}
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var choiceStr = choice.key + ') ' + choice.name;
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if (pointer === choice.key) {
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choiceStr = chalk.cyan(choiceStr);
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}
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output += choiceStr;
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});
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return output;
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}
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