Start re-implementation of inquirer package control flow on top of th…

…e new prompts

packages/canary/.eslintrc.json

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+{
+  "rules": {
+    "no-await-in-loop": "off"
+  }
+}

packages/canary/demo.ts

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+import inquirer from './src/index.js';
+
+const answers = await inquirer.prompt([
+  {
+    type: 'input',
+    name: 'first_name',
+    message: "What's your first name",
+  },
+  {
+    type: 'select',
+    name: 'ask_last_name',
+    message: 'Are you willing to share your last name',
+    choices: [
+      { value: '1', name: 'Yes' },
+      { value: '', name: 'No' },
+    ],
+  },
+  {
+    type: 'input',
+    name: 'last_name',
+    when: (answers) => Boolean(answers['ask_last_name']),
+    message: "What's your last name",
+  },
+  {
+    type: 'input',
+    name: 'phone',
+    message: "What's your phone number?",
+    filter(answer: string): string {
+      // TODO: What's the multi match flag again?
+      return answer.replace(/[^\d]+/, '');
+    },
+  },
+]);
+
+console.log(answers);

packages/canary/package.json

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+{
+  "name": "@inquirer/canary",
+  "type": "module",
+  "version": "0.0.27-alpha.0",
+  "description": "Inquirer input text prompt",
+  "main": "dist/index.js",
+  "typings": "dist/index.d.ts",
+  "files": [
+    "dist/"
+  ],
+  "repository": "SBoudrias/Inquirer.js",
+  "keywords": [
+    "answer",
+    "answers",
+    "ask",
+    "base",
+    "cli",
+    "cli",
+    "command",
+    "command-line",
+    "confirm",
+    "enquirer",
+    "generate",
+    "generator",
+    "hyper",
+    "input",
+    "inquire",
+    "inquirer",
+    "interface",
+    "iterm",
+    "javascript",
+    "menu",
+    "node",
+    "nodejs",
+    "prompt",
+    "promptly",
+    "prompts",
+    "question",
+    "readline",
+    "scaffold",
+    "scaffolder",
+    "scaffolding",
+    "stdin",
+    "stdout",
+    "terminal",
+    "tty",
+    "ui",
+    "yeoman",
+    "yo",
+    "zsh"
+  ],
+  "author": "Simon Boudrias <admin@simonboudrias.com>",
+  "license": "MIT",
+  "homepage": "https://github.com/SBoudrias/Inquirer.js",
+  "dependencies": {
+    "@inquirer/checkbox": "^0.0.30-alpha.0",
+    "@inquirer/confirm": "^0.0.28-alpha.0",
+    "@inquirer/core": "^0.0.30-alpha.0",
+    "@inquirer/editor": "^0.0.21-alpha.0",
+    "@inquirer/expand": "^0.0.28-alpha.0",
+    "@inquirer/input": "^0.0.28-alpha.0",
+    "@inquirer/password": "^0.0.28-alpha.0",
+    "@inquirer/rawlist": "^0.0.11-alpha.0",
+    "@inquirer/select": "^0.0.29-alpha.0",
+    "@inquirer/type": "^0.0.4-alpha.0",
+    "lodash": "^4.17.21"
+  },
+  "scripts": {
+    "tsc": "tsc"
+  },
+  "publishConfig": {
+    "access": "public"
+  }
+}

packages/canary/src/index.ts

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+import input from '@inquirer/input';
+import select from '@inquirer/select';
+import type { Prompt } from '@inquirer/core';
+import type { Context } from '@inquirer/type';
+
+type AsyncValue<Value> = Value | Promise<Value>;
+
+function createPromptModule() {
+  const promptStore = {
+    input,
+    select,
+  };
+
+  type GetPrompt<U extends keyof typeof promptStore> = typeof promptStore[U];
+  type GetAnswerType<U extends keyof typeof promptStore> = GetPrompt<U> extends Prompt<
+    infer Answer,
+    any
+  >
+    ? Answer
+    : never;
+  type GetPromptConfig<U extends keyof typeof promptStore> = GetPrompt<U> extends Prompt<
+    any,
+    infer Config
+  >
+    ? Config
+    : never;
+
+  type Answers = Record<string, unknown>;
+  type ControlFlowConfig<U extends keyof typeof promptStore> = {
+    name: string;
+    when?: (answers: Answers) => boolean | Promise<boolean>;
+    filter?: (answer: GetAnswerType<U>, answers: Answers) => AsyncValue<GetAnswerType<U>>;
+  };
+  type PromptNameToFullConfig<U extends keyof typeof promptStore> = U extends any
+    ? ControlFlowConfig<U> & GetPromptConfig<U> & { type: U }
+    : never;
+
+  async function prompt(
+    config:
+      | PromptNameToFullConfig<keyof typeof promptStore>
+      | PromptNameToFullConfig<keyof typeof promptStore>[],
+    context?: Context
+  ) {
+    const answers: Answers = {};
+    const promptSeries = Array.isArray(config) ? config : [config];
+
+    for (const promptConfig of promptSeries) {
+      const { type, name, when, filter, ...configRest } = promptConfig;
+      const promptFn = promptStore[type];
+
+      if (when != null && !(await when(answers))) {
+        continue;
+      }
+
+      const answer = await promptFn(configRest as GetPromptConfig<typeof type>, context);
+      answers[name] = filter ? await filter(answer, answers) : answer;
+    }
+
+    return answers;
+  }
+
+  function registerPrompt(name: string, promptFn: Prompt<unknown, unknown>) {
+    // @ts-ignore: To fix later
+    promptStore[name] = promptFn;
+  }
+
+  return {
+    prompt,
+    registerPrompt,
+    createPromptModule,
+  };
+}
+
+const inquirer = createPromptModule();
+export default inquirer;
+
+export { createPromptModule, input, select };

packages/canary/tsconfig.json

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+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "./dist"
+  },
+  "include": ["./src"]
+}