init source

node_modules/inquirer/lib/utils/utils.js

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+'use strict';
+var _ = require('lodash');
+var { from, of } = require('rxjs');
+var runAsync = require('run-async');
+
+/**
+ * Resolve a question property value if it is passed as a function.
+ * This method will overwrite the property on the question object with the received value.
+ * @param  {Object} question - Question object
+ * @param  {String} prop     - Property to fetch name
+ * @param  {Object} answers  - Answers object
+ * @return {Rx.Observable}   - Observable emitting once value is known
+ */
+
+exports.fetchAsyncQuestionProperty = function(question, prop, answers) {
+  if (!_.isFunction(question[prop])) {
+    return of(question);
+  }
+
+  return from(
+    runAsync(question[prop])(answers).then(value => {
+      question[prop] = value;
+      return question;
+    })
+  );
+};