Download package if need be ...

packages/create-react-app/index.js

@@ -62,6 +62,7 @@ var semver = require('semver');
 var dns = require('dns');
 var tmp = require('tmp');
 var unpack = require('tar-pack').unpack;
+var hyperquest = require('hyperquest');
 
 var projectName;
 
@@ -292,34 +293,57 @@ function getInstallPackage(version) {
  return packageToInstall;
 }
 
+function getTemporaryDirectory() {
+ return new Promise(function(resolve, reject) {
+ // Unsafe cleanup lets us recursively delete the directory if it contains
+ // contents; by default it only allows removal if it's empty
+ tmp.dir({ unsafeCleanup: true }, function(err, tmpdir, callback) {
+ if (err) {
+ reject(err);
+ } else {
+ resolve({
+ tmpdir: tmpdir,
+ cleanup: function() {
+ try {
+ // Callback might throw and fail, since it's a temp directory the
+ // OS will clean it up eventually...
+ callback();
+ } catch (ignored) {}
+ }
+ });
+ }
+ });
+ });
+}
+
+function extractStream(stream, dest) {
+ return new Promise(function(resolve, reject) {
+ stream.pipe(unpack(dest, function(err) {
+ if (err) {
+ reject(err);
+ } else {
+ resolve(dest);
+ }
+ }));
+ });
+}
+
 // Extract package name from tarball url or path.
 function getPackageName(installPackage) {
  if (installPackage.indexOf('.tgz') > -1) {
- return new Promise(function(resolve, reject) {
- tmp.dir({ unsafeCleanup: true }, function(err, tmpdir, callback) {
- if (err) {
- reject(err);
- } else {
- resolve({
- tmpdir: tmpdir,
- callback: callback
- });
- }
+ return getTemporaryDirectory().then(function(obj) {
+ if (installPackage.test(/^http/)) {
+ var stream = hyperquest(installPackage);
+ } else {
+ var stream = fs.createReadStream(installPackage);
+ }
+ return extractStream(stream).then(function() {
+ return obj;
  });
  }).then(function(obj) {
- return new Promise(function(resolve, reject) {
- fs.createReadStream(installPackage).pipe(unpack(obj.tmpdir, function(err) {
- if (err) {
- reject(err);
- } else {
- var packageName = require(path.join(obj.tmpdir, 'package.json')).name;
- try {
- obj.callback();
- } catch (ignored) {}
- resolve(packageName);
- }
- }));
- });
+ var packageName = require(path.join(obj.tmpdir, 'package.json')).name;
+ obj.cleanup();
+ return packageName;
  }).catch(function(err) {
  // The package name could be with or without semver version, e.g. react-scripts-0.2.0-alpha.1.tgz
  // However, this function returns package name only without semver version.

packages/create-react-app/package.json

@@ -24,6 +24,7 @@
  "commander": "^2.9.0",
  "cross-spawn": "^4.0.0",
  "fs-extra": "^1.0.0",
+ "hyperquest": "^2.1.2",
  "semver": "^5.0.3",
  "tar-pack": "^3.4.0",
  "tmp": "0.0.31",