99 lines
1.9 KiB
JavaScript
Executable file
99 lines
1.9 KiB
JavaScript
Executable file
/**
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* `confirm` type prompt
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*/
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import chalk from 'chalk';
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import { take, takeUntil } from 'rxjs';
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import observe from '../utils/events.js';
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import Base from './base.js';
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export default class ConfirmPrompt extends Base {
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constructor(questions, rl, answers) {
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super(questions, rl, answers);
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let rawDefault = true;
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Object.assign(this.opt, {
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filter(input) {
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if (input != null && input !== '') {
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if (/^y(es)?/i.test(input)) return true;
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if (/^n(o)?/i.test(input)) return false;
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}
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return rawDefault;
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},
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});
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if (this.opt.default != null) {
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rawDefault = Boolean(this.opt.default);
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}
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this.opt.default = rawDefault ? 'Y/n' : 'y/N';
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}
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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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_run(cb) {
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this.done = cb;
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// Once user confirm (enter key)
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const events = observe(this.rl);
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events.keypress.pipe(takeUntil(events.line)).forEach(this.onKeypress.bind(this));
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events.line.pipe(take(1)).forEach(this.onEnd.bind(this));
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// Init
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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 {ConfirmPrompt} self
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*/
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render(answer) {
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let message = this.getQuestion();
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if (typeof answer === 'boolean') {
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message += chalk.cyan(answer ? 'Yes' : 'No');
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} else if (answer) {
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message += answer;
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} else {
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message += this.rl.line;
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}
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this.screen.render(message);
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return this;
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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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onEnd(input) {
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this.status = 'answered';
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let output = this.opt.filter(input);
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if (this.opt.transformer) {
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output = this.opt.transformer(output);
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}
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this.render(output);
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this.screen.done();
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this.done(output);
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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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onKeypress() {
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this.render();
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}
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}
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