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node_modules/inquirer/lib/utils/events.js 1.32 KB
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  'use strict';
  var rx = require('rx-lite-aggregates');
  
  function normalizeKeypressEvents(value, key) {
    return {value: value, key: key || {}};
  }
  
  module.exports = function (rl) {
    var keypress = rx.Observable.fromEvent(rl.input, 'keypress', normalizeKeypressEvents)
      .filter(function (e) {
        // Ignore `enter` key. On the readline, we only care about the `line` event.
        return e.key.name !== 'enter' && e.key.name !== 'return';
      });
  
    return {
      line: rx.Observable.fromEvent(rl, 'line'),
      keypress: keypress,
  
      normalizedUpKey: keypress.filter(function (e) {
        return e.key.name === 'up' || e.key.name === 'k' || (e.key.name === 'p' && e.key.ctrl);
      }).share(),
  
      normalizedDownKey: keypress.filter(function (e) {
        return e.key.name === 'down' || e.key.name === 'j' || (e.key.name === 'n' && e.key.ctrl);
      }).share(),
  
      numberKey: keypress.filter(function (e) {
        return e.value && '123456789'.indexOf(e.value) >= 0;
      }).map(function (e) {
        return Number(e.value);
      }).share(),
  
      spaceKey: keypress.filter(function (e) {
        return e.key && e.key.name === 'space';
      }).share(),
  
      aKey: keypress.filter(function (e) {
        return e.key && e.key.name === 'a';
      }).share(),
  
      iKey: keypress.filter(function (e) {
        return e.key && e.key.name === 'i';
      }).share()
    };
  };