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qwen/nodejs/node_modules/prompts/lib/index.js

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+'use strict';
+
+const prompts = require('./prompts');
+
+const passOn = ['suggest', 'format', 'onState', 'validate', 'onRender', 'type'];
+const noop = () => {};
+
+/**
+ * Prompt for a series of questions
+ * @param {Array|Object} questions Single question object or Array of question objects
+ * @param {Function} [onSubmit] Callback function called on prompt submit
+ * @param {Function} [onCancel] Callback function called on cancel/abort
+ * @returns {Object} Object with values from user input
+ */
+async function prompt(questions=[], { onSubmit=noop, onCancel=noop }={}) {
+  const answers = {};
+  const override = prompt._override || {};
+  questions = [].concat(questions);
+  let answer, question, quit, name, type, lastPrompt;
+
+  const getFormattedAnswer = async (question, answer, skipValidation = false) => {
+    if (!skipValidation && question.validate && question.validate(answer) !== true) {
+      return;
+    }
+    return question.format ? await question.format(answer, answers) : answer
+  };
+
+  for (question of questions) {
+    ({ name, type } = question);
+
+    // evaluate type first and skip if type is a falsy value
+    if (typeof type === 'function') {
+      type = await type(answer, { ...answers }, question)
+      question['type'] = type
+    }
+    if (!type) continue;
+
+    // if property is a function, invoke it unless it's a special function
+    for (let key in question) {
+      if (passOn.includes(key)) continue;
+      let value = question[key];
+      question[key] = typeof value === 'function' ? await value(answer, { ...answers }, lastPrompt) : value;
+    }
+
+    lastPrompt = question;
+
+    if (typeof question.message !== 'string') {
+      throw new Error('prompt message is required');
+    }
+
+    // update vars in case they changed
+    ({ name, type } = question);
+
+    if (prompts[type] === void 0) {
+      throw new Error(`prompt type (${type}) is not defined`);
+    }
+
+    if (override[question.name] !== undefined) {
+      answer = await getFormattedAnswer(question, override[question.name]);
+      if (answer !== undefined) {
+        answers[name] = answer;
+        continue;
+      }
+    }
+
+    try {
+      // Get the injected answer if there is one or prompt the user
+      answer = prompt._injected ? getInjectedAnswer(prompt._injected, question.initial) : await prompts[type](question);
+      answers[name] = answer = await getFormattedAnswer(question, answer, true);
+      quit = await onSubmit(question, answer, answers);
+    } catch (err) {
+      quit = !(await onCancel(question, answers));
+    }
+
+    if (quit) return answers;
+  }
+
+  return answers;
+}
+
+function getInjectedAnswer(injected, deafultValue) {
+  const answer = injected.shift();
+    if (answer instanceof Error) {
+      throw answer;
+    }
+
+    return (answer === undefined) ? deafultValue : answer;
+}
+
+function inject(answers) {
+  prompt._injected = (prompt._injected || []).concat(answers);
+}
+
+function override(answers) {
+  prompt._override = Object.assign({}, answers);
+}
+
+module.exports = Object.assign(prompt, { prompt, prompts, inject, override });