Icard/angular-clarity-master(work.../node_modules/inquirer/lib/prompts/confirm.js

99 lines
1.8 KiB
JavaScript

'use strict';
/**
* `confirm` type prompt
*/
const chalk = require('chalk');
const { take, takeUntil } = require('rxjs/operators');
const Base = require('./base');
const observe = require('../utils/events');
class ConfirmPrompt extends Base {
constructor(questions, rl, answers) {
super(questions, rl, answers);
let rawDefault = true;
Object.assign(this.opt, {
filter(input) {
let value = rawDefault;
if (input != null && input !== '') {
value = /^y(es)?/i.test(input);
}
return value;
},
});
if (this.opt.default != null) {
rawDefault = Boolean(this.opt.default);
}
this.opt.default = rawDefault ? 'Y/n' : 'y/N';
}
/**
* Start the Inquiry session
* @param {Function} cb Callback when prompt is done
* @return {this}
*/
_run(cb) {
this.done = cb;
// Once user confirm (enter key)
const events = observe(this.rl);
events.keypress.pipe(takeUntil(events.line)).forEach(this.onKeypress.bind(this));
events.line.pipe(take(1)).forEach(this.onEnd.bind(this));
// Init
this.render();
return this;
}
/**
* Render the prompt to screen
* @return {ConfirmPrompt} self
*/
render(answer) {
let message = this.getQuestion();
if (typeof answer === 'boolean') {
message += chalk.cyan(answer ? 'Yes' : 'No');
} else {
message += this.rl.line;
}
this.screen.render(message);
return this;
}
/**
* When user press `enter` key
*/
onEnd(input) {
this.status = 'answered';
const output = this.opt.filter(input);
this.render(output);
this.screen.done();
this.done(output);
}
/**
* When user press a key
*/
onKeypress() {
this.render();
}
}
module.exports = ConfirmPrompt;