add typescript facebook/create-react-app#5647

Author: hmeissner

package.json

@@ -65,6 +65,7 @@
     "sass-loader": "7.1.0",
     "style-loader": "0.23.0",
     "terser-webpack-plugin": "1.1.0",
+    "typescript": "^3.1.6",
     "url-loader": "1.1.1",
     "webpack": "4.19.1",
     "webpack-dev-server": "3.1.9",

scripts/utils/verifyTypeScriptSetup.js

@@ -53,7 +53,10 @@ function verifyTypeScriptSetup() {
   // Ensure typescript is installed
   let ts;
   try {
-    ts = require(resolve.sync('typescript'));
+    // TODO: we temporarily added typescript to react-scripts because of https://github.com/facebook/create-react-app/issues/5647
+    ts = require(resolve.sync('typescript', {
+      basedir: paths.appNodeModules,
+    }));
   } catch (_) {
     console.error(
       chalk.bold.red(

yarn.lock

@@ -8768,6 +8768,11 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
+typescript@^3.1.6:
+  version "3.1.6"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.1.6.tgz#b6543a83cfc8c2befb3f4c8fba6896f5b0c9be68"
+  integrity sha512-tDMYfVtvpb96msS1lDX9MEdHrW4yOuZ4Kdc4Him9oU796XldPYF/t2+uKoX0BBa0hXXwDlqYQbXY5Rzjzc5hBA==
+
 uglify-es@^3.3.4:
   version "3.3.9"
   resolved "https://registry.yarnpkg.com/uglify-es/-/uglify-es-3.3.9.tgz#0c1c4f0700bed8dbc124cdb304d2592ca203e677"