tools: add babel-eslint

Create tools/update-babel-eslint.sh script and execute it to do the
first installation of the package.
Update tools/license-builder.sh and execute it to add babel-eslint's
license to our LICENSE file.

PR-URL: https://github.com/nodejs/node/pull/17820
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/tools/update-babel-eslint.sh b/tools/update-babel-eslint.sh
new file mode 100755
index 00000000000..2b6a4e0ee98
--- /dev/null
+++ b/tools/update-babel-eslint.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# Shell script to update babel-eslint in the source tree to the latest release.
+
+# Depends on npm and node being in $PATH.
+
+# This script must be be in the tools directory when it runs because it uses
+# $BASH_SOURCE[0] to determine directories to work in.
+
+cd "$( dirname "${BASH_SOURCE[0]}" )"
+rm -rf node_modules/babel-eslint
+mkdir babel-eslint-tmp
+cd babel-eslint-tmp
+npm init --yes
+
+npm install --global-style --no-bin-links --production --no-package-lock babel-eslint@latest
+
+# Install dmn if it is not in path.
+type -P dmn || npm install -g dmn
+
+# Use dmn to remove some unneeded files.
+dmn -f clean
+
+cd ..
+mv babel-eslint-tmp/node_modules/babel-eslint node_modules/babel-eslint
+rm -rf babel-eslint-tmp/