feat: initial commit

node_modules/inquirer/lib/ui/prompt.js

@@ -0,0 +1,124 @@
+'use strict';
+var _ = require('lodash');
+var { defer, empty, from, of } = require('rxjs');
+var { concatMap, filter, publish, reduce } = require('rxjs/operators');
+var runAsync = require('run-async');
+var utils = require('../utils/utils');
+var Base = require('./baseUI');
+
+/**
+ * Base interface class other can inherits from
+ */
+
+class PromptUI extends Base {
+  constructor(prompts, opt) {
+    super(opt);
+    this.prompts = prompts;
+  }
+
+  run(questions) {
+    // Keep global reference to the answers
+    this.answers = {};
+
+    // Make sure questions is an array.
+    if (_.isPlainObject(questions)) {
+      questions = [questions];
+    }
+
+    // Create an observable, unless we received one as parameter.
+    // Note: As this is a public interface, we cannot do an instanceof check as we won't
+    // be using the exact same object in memory.
+    var obs = _.isArray(questions) ? from(questions) : questions;
+
+    this.process = obs.pipe(
+      concatMap(this.processQuestion.bind(this)),
+      publish() // Creates a hot Observable. It prevents duplicating prompts.
+    );
+
+    this.process.connect();
+
+    return this.process
+      .pipe(
+        reduce((answers, answer) => {
+          _.set(this.answers, answer.name, answer.answer);
+          return this.answers;
+        }, {})
+      )
+      .toPromise(Promise)
+      .then(this.onCompletion.bind(this));
+  }
+
+  /**
+   * Once all prompt are over
+   */
+
+  onCompletion() {
+    this.close();
+
+    return this.answers;
+  }
+
+  processQuestion(question) {
+    question = _.clone(question);
+    return defer(() => {
+      var obs = of(question);
+
+      return obs.pipe(
+        concatMap(this.setDefaultType.bind(this)),
+        concatMap(this.filterIfRunnable.bind(this)),
+        concatMap(() =>
+          utils.fetchAsyncQuestionProperty(question, 'message', this.answers)
+        ),
+        concatMap(() =>
+          utils.fetchAsyncQuestionProperty(question, 'default', this.answers)
+        ),
+        concatMap(() =>
+          utils.fetchAsyncQuestionProperty(question, 'choices', this.answers)
+        ),
+        concatMap(this.fetchAnswer.bind(this))
+      );
+    });
+  }
+
+  fetchAnswer(question) {
+    var Prompt = this.prompts[question.type];
+    this.activePrompt = new Prompt(question, this.rl, this.answers);
+    return defer(() =>
+      from(
+        this.activePrompt.run().then(answer => ({ name: question.name, answer: answer }))
+      )
+    );
+  }
+
+  setDefaultType(question) {
+    // Default type to input
+    if (!this.prompts[question.type]) {
+      question.type = 'input';
+    }
+
+    return defer(() => of(question));
+  }
+
+  filterIfRunnable(question) {
+    if (question.when === false) {
+      return empty();
+    }
+
+    if (!_.isFunction(question.when)) {
+      return of(question);
+    }
+
+    var answers = this.answers;
+    return defer(() =>
+      from(
+        runAsync(question.when)(answers).then(shouldRun => {
+          if (shouldRun) {
+            return question;
+          }
+        })
+      ).pipe(filter(val => val != null))
+    );
+  }
+}
+
+module.exports = PromptUI;