3 * `password` type prompt
6 var chalk = require('chalk');
7 var { map, takeUntil } = require('rxjs/operators');
8 var Base = require('./base');
9 var observe = require('../utils/events');
11 function mask(input, maskChar) {
12 input = String(input);
13 maskChar = typeof maskChar === 'string' ? maskChar : '*';
14 if (input.length === 0) {
18 return new Array(input.length + 1).join(maskChar);
21 class PasswordPrompt extends Base {
23 * Start the Inquiry session
24 * @param {Function} cb Callback when prompt is done
31 var events = observe(this.rl);
33 // Once user confirm (enter key)
34 var submit = events.line.pipe(map(this.filterInput.bind(this)));
36 var validation = this.handleSubmitEvents(submit);
37 validation.success.forEach(this.onEnd.bind(this));
38 validation.error.forEach(this.onError.bind(this));
41 .pipe(takeUntil(validation.success))
42 .forEach(this.onKeypress.bind(this));
51 * Render the prompt to screen
52 * @return {PasswordPrompt} self
56 var message = this.getQuestion();
57 var bottomContent = '';
59 if (this.status === 'answered') {
60 message += this.opt.mask
61 ? chalk.cyan(mask(this.answer, this.opt.mask))
62 : chalk.italic.dim('[hidden]');
63 } else if (this.opt.mask) {
64 message += mask(this.rl.line || '', this.opt.mask);
66 message += chalk.italic.dim('[input is hidden] ');
70 bottomContent = '\n' + chalk.red('>> ') + error;
73 this.screen.render(message, bottomContent);
77 * When user press `enter` key
82 return this.opt.default == null ? '' : this.opt.default;
89 this.status = 'answered';
90 this.answer = state.value;
96 this.done(state.value);
100 this.render(state.isValid);
104 // If user press a key, just clear the default value
105 if (this.opt.default) {
106 this.opt.default = undefined;
113 module.exports = PasswordPrompt;