Merge branch '4.x' into merge-4.x

tests/integration/multi-nodejs-test/test.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+set -e
+
+cd "$( dirname "$( readlink -f "$0" )" )" || exit 1
+# shellcheck disable=SC1090
+[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+
+# This script tests with precompiler and the built distribution with multiple NodeJS version.
+# This test is simple by design. It merely ensures, that calling Handlebars does not fail with old versions.
+# It does (almost) not test for correctness, because that is already done in the mocha-tests.
+# And it does not use any NodeJS based testing framework to make this part independent of the Node version.
+
+unset npm_config_prefix
+
+echo "Handlebars should be able to run in various versions of NodeJS"
+for node_version_to_test in 10 11 12 13 14 15 16 17; do
+
+    rm target node_modules package-lock.json -rf
+    mkdir target
+
+    nvm install "$node_version_to_test"
+    nvm exec "$node_version_to_test" npm install
+    nvm exec "$node_version_to_test" npm run test
+    nvm exec "$node_version_to_test" npm run test-precompile
+
+    echo Success
+done