Add the ability to skip the rm -rf step in bower-install.sh and npm-install.sh.

This can speed up multiple install runs when making changes to bower and package requirements locally, where absolute perfect reproduction of the lock file may not be strictly necessary.

Author: mrmachine

CHANGES.md

@@ -1,6 +1,11 @@
 Breaking and notable changes
 ===
 
+14 October 2021
+---
+
+- Add the ability to skip the `rm -rf` step in `bower-install.sh` and `npm-install.sh`, when `bower.json` or `package.json` has changed, by exporting `BOWER_INSTALL_SH_SKIP_CLEAN=1` or `NPM_INSTALL_SH_SKIP_CLEAN=1`.
+
 6 April 2021
 ---
 

ixc_django_docker/bin/bower-install.sh

@@ -27,7 +27,7 @@ touch "bower.json.md5.$UNAME"
 
 if [[ ! -s "bower.json.md5.$UNAME" ]] || ! md5sum --status -c "bower.json.md5.$UNAME" > /dev/null 2>&1; then
 	echo "Bower components in '$DIR' directory are out of date, 'bower.json' has been updated."
-	if [[ -d bower_components ]]; then
+	if [[ -d bower_components && -z ${BOWER_INSTALL_SH_SKIP_CLEAN+1} ]]; then
 		rm -rf bower_components/*
 	fi
 	bower install --allow-root

ixc_django_docker/bin/npm-install.sh

@@ -27,7 +27,7 @@ touch "package.json.md5.$UNAME"
 
 if [[ ! -s "package.json.md5.$UNAME" ]] || ! md5sum --status -c "package.json.md5.$UNAME" > /dev/null 2>&1; then
 	echo "Node modules in '$DIR' directory are out of date, 'package.json' has been updated."
-	if [[ -d node_modules ]]; then
+	if [[ -d node_modules && -z ${NPM_INSTALL_SH_SKIP_CLEAN+1} ]]; then
 		rm -rf node_modules/*
 	fi
 	if [[ -f yarn.lock ]]; then