Extract JavaScript aliases to '~/.bash_aliases/js'

.bash_aliases/lang-js

@@ -0,0 +1,35 @@
+# shellcheck shell=bash
+# vim: set ft=bash :
+
+alias js="node"
+alias ts="ts-node"
+
+yarn() {
+  if [[ -f "package-lock.json" ]]; then
+    echo "WARNING: package-lock.json exists"
+    read -p "Are you sure you want to run yarn? [y/N] " -n 1 -r
+    echo
+    if [[ $REPLY =~ ^[Yy]$ ]]; then
+      command yarn "$@"
+    else
+      echo "Aborted"
+    fi
+  else
+    command yarn "$@"
+  fi
+}
+
+npm() {
+  if [[ -f "yarn.lock" ]]; then
+    echo "WARNING: yarn.lock exists"
+    read -p "Are you sure you want to run npm? [y/N] " -n 1 -r
+    echo
+    if [[ $REPLY =~ ^[Yy]$ ]]; then
+      command npm "$@"
+    else
+      echo "Aborted"
+    fi
+  else
+    command npm "$@"
+  fi
+}