From 0ee2c42b55e1893f0ae6510916405eb273587844 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hu=C3=A1ng=20J=C3=B9nli=C3=A0ng?= <i@jhuang.me>
Date: Wed, 11 Sep 2019 14:24:08 -0400
Subject: [PATCH] chore: add lint-ts rule (#10427)

---
 Makefile                         | 7 ++++++-
 package.json                     | 1 +
 scripts/tests/typescript/lint.sh | 7 +++++++
 yarn.lock                        | 5 +++++
 4 files changed, 19 insertions(+), 1 deletion(-)
 create mode 100755 scripts/tests/typescript/lint.sh

diff --git a/Makefile b/Makefile
index 5fa5cb0cfdbf..e8fe2d667f01 100644
--- a/Makefile
+++ b/Makefile
@@ -54,9 +54,14 @@ watch: clean clean-lib
 flow:
 	./node_modules/.bin/flow check --strip-root
 
-lint:
+lint: lint-js lint-ts
+
+lint-js:
 	./node_modules/.bin/eslint scripts $(SOURCES) '*.js' --format=codeframe
 
+lint-ts:
+	./scripts/tests/typescript/lint.sh
+
 fix: fix-json
 	./node_modules/.bin/eslint scripts $(SOURCES) '*.js' --format=codeframe --fix
 
diff --git a/package.json b/package.json
index 3cdf83c27715..82008898b833 100644
--- a/package.json
+++ b/package.json
@@ -65,6 +65,7 @@
     "rollup-plugin-replace": "^2.2.0",
     "test262-stream": "^1.2.0",
     "through2": "^2.0.0",
+    "typescript": "^3.6.3",
     "warnings-to-errors-webpack-plugin": "^2.0.0",
     "webpack": "^3.4.1",
     "webpack-dependency-suite": "^2.4.4",
diff --git a/scripts/tests/typescript/lint.sh b/scripts/tests/typescript/lint.sh
new file mode 100755
index 000000000000..7a5f9193287f
--- /dev/null
+++ b/scripts/tests/typescript/lint.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+set -e
+
+node="node"
+tsFlags="--strict"
+
+$node ./node_modules/typescript/bin/tsc $tsFlags ./packages/babel-types/lib/index.d.ts
diff --git a/yarn.lock b/yarn.lock
index 4baaf3fe85ce..92f52fdd60b0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -10438,6 +10438,11 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
+typescript@^3.6.3:
+  version "3.6.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.6.3.tgz#fea942fabb20f7e1ca7164ff626f1a9f3f70b4da"
+  integrity sha512-N7bceJL1CtRQ2RiG0AQME13ksR7DiuQh/QehubYcghzv20tnh+MQnQIuJddTmsbqYj+dztchykemz0zFzlvdQw==
+
 uglify-js@3.4.x:
   version "3.4.10"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.4.10.tgz#9ad9563d8eb3acdfb8d38597d2af1d815f6a755f"