feat: Pre-installing npm modules if project contains package.json

src/commands/build/index.js

@@ -1,12 +1,14 @@
 /* @flow */
 import runWebpackBuilder from "./webpack-build";
 import createParams from "./../../utils/params";
+import preinstallNpmModules from "../../preinstall-npm-modules";
 
 /**
  * Aik build command
  */
 export default function aikBuild(input: string[], flags: CLIFlags): Promise<*> {
   const [filename] = input;
   const params = createParams(filename, flags, "", true);
+  preinstallNpmModules(process.cwd());
   return runWebpackBuilder(filename, flags, params);
 }

src/commands/dev-server/index.js

@@ -1,5 +1,4 @@
 /* @flow */
-
 import { execSync } from "child_process";
 import fs from "fs";
 import readline from "readline";
@@ -17,6 +16,7 @@ import {
   devServerInstallingModuleMsg,
   devServerSkipInstallingModuleMsg
 } from "./../../utils/messages";
+import preinstallNpmModules from "../../preinstall-npm-modules";
 
 export function requestCreatingAnEntryPoint(
   filename: string
@@ -82,12 +82,14 @@ export default async function aikDevServer(
     const shouldCreateAnEntryPoint = await requestCreatingAnEntryPoint(
       filename
     );
+
     if (shouldCreateAnEntryPoint) {
       await createFile(filename);
     }
   }
 
   devServerInvalidBuildMsg();
+  preinstallNpmModules(process.cwd());
 
   if (flags.react) {
     devServerReactRequired();

src/preinstall-npm-modules.js

@@ -0,0 +1,30 @@
+/* @flow */
+import { spawnSync } from "child_process";
+import fs from "fs";
+import path from "path";
+import { foundPackageJson } from "./utils/messages";
+
+export function hasPackageJson(cwd: string) {
+  try {
+    fs.statSync(path.join(cwd, "package.json"));
+    return true;
+  } catch (error) {
+    return false;
+  }
+}
+
+export function hasNodeModules(cwd: string) {
+  try {
+    fs.statSync(path.join(cwd, "node_modules"));
+    return true;
+  } catch (error) {
+    return false;
+  }
+}
+
+export default function preinstallNpmModules(cwd: string) {
+  if (!hasPackageJson(cwd)) return;
+  if (hasNodeModules(cwd)) return;
+  foundPackageJson();
+  spawnSync("npm", ["install", "--silent"], { cwd, stdio: "inherit" });
+}

src/utils/messages.js

@@ -72,6 +72,21 @@ export function fileDoesNotExistMsg(filename: string) {
   ]);
 }
 
+export function foundPackageJson() {
+  return print([
+    "",
+    warningBadge() +
+      " " +
+      chalk.yellow('File "package.json" has been discovered.'),
+    "",
+    `Since ${chalk.yellow('"node_modules"')} folder doesn't exist and in order to avoid possible artifacts caused by`,
+    `accidentally updated versions of npm modules Aik will run ${chalk.yellow('"npm install"')} in current directory.`,
+    "",
+    waitBadge() + " " + chalk.blue("Installing npm modules..."),
+    ""
+  ]);
+}
+
 /**
  *
  * Dev Server Messages
@@ -193,11 +208,12 @@ export function devServerModuleDoesntExists(module: string, filename: string) {
 
 export function devServerReactRequired() {
   return print([
+    "",
     warningBadge() + " " + chalk.yellow('"react" required.'),
     "",
     'In order to make "react-hot-loader" work, "react" and "react-dom" are required.',
     "",
-    chalk.blue("Installing required modules..."),
+    waitBadge() + " " + chalk.blue("Installing required modules..."),
     ""
   ]);
 }