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							250 lines
						
					
					
						
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							250 lines
						
					
					
						
							6.5 KiB
						
					
					
				"use strict"; | 
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 | 
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function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } } | 
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 | 
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function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; } | 
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const color = require('kleur'); | 
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 | 
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const Prompt = require('./prompt'); | 
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 | 
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const _require = require('sisteransi'), | 
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      cursor = _require.cursor, | 
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      erase = _require.erase; | 
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 | 
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const _require2 = require('../util'), | 
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      style = _require2.style, | 
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      figures = _require2.figures, | 
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      clear = _require2.clear, | 
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      lines = _require2.lines; | 
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 | 
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const isNumber = /[0-9]/; | 
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 | 
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const isDef = any => any !== undefined; | 
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 | 
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const round = (number, precision) => { | 
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  let factor = Math.pow(10, precision); | 
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  return Math.round(number * factor) / factor; | 
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}; | 
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/** | 
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 * NumberPrompt Base Element | 
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 * @param {Object} opts Options | 
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 * @param {String} opts.message Message | 
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 * @param {String} [opts.style='default'] Render style | 
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 * @param {Number} [opts.initial] Default value | 
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 * @param {Number} [opts.max=+Infinity] Max value | 
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 * @param {Number} [opts.min=-Infinity] Min value | 
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 * @param {Boolean} [opts.float=false] Parse input as floats | 
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 * @param {Number} [opts.round=2] Round floats to x decimals | 
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 * @param {Number} [opts.increment=1] Number to increment by when using arrow-keys | 
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 * @param {Function} [opts.validate] Validate function | 
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 * @param {Stream} [opts.stdin] The Readable stream to listen to | 
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 * @param {Stream} [opts.stdout] The Writable stream to write readline data to | 
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 * @param {String} [opts.error] The invalid error label | 
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 */ | 
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 | 
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class NumberPrompt extends Prompt { | 
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  constructor(opts = {}) { | 
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    super(opts); | 
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    this.transform = style.render(opts.style); | 
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    this.msg = opts.message; | 
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    this.initial = isDef(opts.initial) ? opts.initial : ''; | 
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    this.float = !!opts.float; | 
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    this.round = opts.round || 2; | 
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    this.inc = opts.increment || 1; | 
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    this.min = isDef(opts.min) ? opts.min : -Infinity; | 
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    this.max = isDef(opts.max) ? opts.max : Infinity; | 
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    this.errorMsg = opts.error || `Please Enter A Valid Value`; | 
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 | 
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    this.validator = opts.validate || (() => true); | 
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 | 
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    this.color = `cyan`; | 
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    this.value = ``; | 
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    this.typed = ``; | 
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    this.lastHit = 0; | 
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    this.render(); | 
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  } | 
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 | 
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  set value(v) { | 
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    if (!v && v !== 0) { | 
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      this.placeholder = true; | 
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      this.rendered = color.gray(this.transform.render(`${this.initial}`)); | 
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      this._value = ``; | 
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    } else { | 
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      this.placeholder = false; | 
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      this.rendered = this.transform.render(`${round(v, this.round)}`); | 
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      this._value = round(v, this.round); | 
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    } | 
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 | 
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    this.fire(); | 
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  } | 
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 | 
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  get value() { | 
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    return this._value; | 
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  } | 
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 | 
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  parse(x) { | 
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    return this.float ? parseFloat(x) : parseInt(x); | 
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  } | 
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  valid(c) { | 
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    return c === `-` || c === `.` && this.float || isNumber.test(c); | 
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  } | 
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 | 
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  reset() { | 
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    this.typed = ``; | 
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    this.value = ``; | 
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    this.fire(); | 
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    this.render(); | 
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  } | 
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 | 
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  exit() { | 
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    this.abort(); | 
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  } | 
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 | 
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  abort() { | 
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    let x = this.value; | 
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    this.value = x !== `` ? x : this.initial; | 
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    this.done = this.aborted = true; | 
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    this.error = false; | 
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    this.fire(); | 
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    this.render(); | 
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    this.out.write(`\n`); | 
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    this.close(); | 
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  } | 
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  validate() { | 
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    var _this = this; | 
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 | 
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    return _asyncToGenerator(function* () { | 
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      let valid = yield _this.validator(_this.value); | 
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 | 
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      if (typeof valid === `string`) { | 
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        _this.errorMsg = valid; | 
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        valid = false; | 
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      } | 
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 | 
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      _this.error = !valid; | 
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    })(); | 
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  } | 
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  submit() { | 
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    var _this2 = this; | 
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 | 
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    return _asyncToGenerator(function* () { | 
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      yield _this2.validate(); | 
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 | 
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      if (_this2.error) { | 
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        _this2.color = `red`; | 
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        _this2.fire(); | 
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        _this2.render(); | 
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        return; | 
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      } | 
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      let x = _this2.value; | 
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      _this2.value = x !== `` ? x : _this2.initial; | 
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      _this2.done = true; | 
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      _this2.aborted = false; | 
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      _this2.error = false; | 
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 | 
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      _this2.fire(); | 
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 | 
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      _this2.render(); | 
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 | 
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      _this2.out.write(`\n`); | 
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 | 
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      _this2.close(); | 
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    })(); | 
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  } | 
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  up() { | 
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    this.typed = ``; | 
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 | 
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    if (this.value === '') { | 
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      this.value = this.min - this.inc; | 
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    } | 
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 | 
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    if (this.value >= this.max) return this.bell(); | 
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    this.value += this.inc; | 
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    this.color = `cyan`; | 
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    this.fire(); | 
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    this.render(); | 
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  } | 
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  down() { | 
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    this.typed = ``; | 
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 | 
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    if (this.value === '') { | 
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      this.value = this.min + this.inc; | 
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    } | 
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 | 
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    if (this.value <= this.min) return this.bell(); | 
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    this.value -= this.inc; | 
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    this.color = `cyan`; | 
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    this.fire(); | 
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    this.render(); | 
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  } | 
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  delete() { | 
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    let val = this.value.toString(); | 
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    if (val.length === 0) return this.bell(); | 
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    this.value = this.parse(val = val.slice(0, -1)) || ``; | 
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 | 
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    if (this.value !== '' && this.value < this.min) { | 
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      this.value = this.min; | 
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    } | 
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    this.color = `cyan`; | 
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    this.fire(); | 
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    this.render(); | 
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  } | 
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  next() { | 
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    this.value = this.initial; | 
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    this.fire(); | 
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    this.render(); | 
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  } | 
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  _(c, key) { | 
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    if (!this.valid(c)) return this.bell(); | 
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    const now = Date.now(); | 
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    if (now - this.lastHit > 1000) this.typed = ``; // 1s elapsed | 
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 | 
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    this.typed += c; | 
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    this.lastHit = now; | 
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    this.color = `cyan`; | 
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    if (c === `.`) return this.fire(); | 
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    this.value = Math.min(this.parse(this.typed), this.max); | 
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    if (this.value > this.max) this.value = this.max; | 
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    if (this.value < this.min) this.value = this.min; | 
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    this.fire(); | 
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    this.render(); | 
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  } | 
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  render() { | 
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    if (this.closed) return; | 
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 | 
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    if (!this.firstRender) { | 
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      if (this.outputError) this.out.write(cursor.down(lines(this.outputError, this.out.columns) - 1) + clear(this.outputError, this.out.columns)); | 
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      this.out.write(clear(this.outputText, this.out.columns)); | 
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    } | 
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 | 
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    super.render(); | 
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    this.outputError = ''; // Print prompt | 
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 | 
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    this.outputText = [style.symbol(this.done, this.aborted), color.bold(this.msg), style.delimiter(this.done), !this.done || !this.done && !this.placeholder ? color[this.color]().underline(this.rendered) : this.rendered].join(` `); // Print error | 
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 | 
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    if (this.error) { | 
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      this.outputError += this.errorMsg.split(`\n`).reduce((a, l, i) => a + `\n${i ? ` ` : figures.pointerSmall} ${color.red().italic(l)}`, ``); | 
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    } | 
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 | 
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    this.out.write(erase.line + cursor.to(0) + this.outputText + cursor.save + this.outputError + cursor.restore); | 
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  } | 
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} | 
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module.exports = NumberPrompt; |