wip3

install/nodejs

@@ -1,59 +1,76 @@
 #!/usr/bin/env bash
 ##makedesc: Install nodejs + npm via nvm
 
-isMac() { uname -s | grep -q "Darwin"; }
-isLinux() { uname -s | grep -q "Linux"; }
+set -eo pipefail
+
+installed() { command -v "$1" >/dev/null 2>&1; }
+
+isMac() { [ "$(uname -s)" = "Darwin" ]; }
+isLinux() { [ "$(uname -s)" = "Linux" ]; }
+
+NVM_DIR="${NVM_DIR:-$HOME/.nvm}"
 
 install() {
     echo
     echo "==============================================="
-    echo "Installing nodejs + nvm..."
+    echo "Installing nodejs + nvm"
     echo "==============================================="
     echo
 
     if isMac; then
-        brew install nvm
+        if installed brew; then
+            brew install nvm
+        else
+            echo "ERROR: Install Homebrew first." >&2
+            exit 1
+        fi
     elif isLinux; then
-        wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/master/install.sh | bash
+        curl -fsSL https://raw.githubusercontent.com/nvm-sh/nvm/master/install.sh | bash
     else
-        echo "This OS is not supported yet!"
-        exit
+        echo "ERROR: This OS is not supported yet!" >&2
+        exit 1
     fi
-    nvm install-latest-npm
-    nvm install node
-    nvm use node
+
     export NVM_DIR="$HOME/.nvm"
     [ -s "$NVM_DIR/nvm.sh" ] && source "$NVM_DIR/nvm.sh"
     [ -s "$NVM_DIR/bash_completion" ] && source "$NVM_DIR/bash_completion"
 
-    cat << EOF >> "$HOME/.profile"
+    nvm install-latest-npm
+    nvm install node
+    nvm use node
+
+    if ! grep -q 'NVM_DIR' "$HOME/.profile" 2>/dev/null; then
+        cat << EOF >> "$HOME/.profile"
 
 # nvm (not nvim!)
-export NVM_DIR="\$HOME/.nvm" # nvim_autoinstalled
-[ -s "\$NVM_DIR/nvm.sh" ] && source "\$NVM_DIR/nvm.sh" # nvim_autoinstalled
-[ -s "\$NVM_DIR/bash_completion" ] && source "\$NVM_DIR/bash_completion" # nvim_autoinstalled
+export NVM_DIR="\$HOME/.nvm"
+[ -s "\$NVM_DIR/nvm.sh" ] && source "\$NVM_DIR/nvm.sh"
+[ -s "\$NVM_DIR/bash_completion" ] && source "\$NVM_DIR/bash_completion"
 
 EOF
+    fi
 
     echo
     echo "Finish!"
-    echo
-
     nvm current
-    nvm ls
+    echo
 }
 
 remove() {
     echo
     echo "==============================================="
-    echo "Removing nodejs + nvm..."
+    echo "Removing nodejs + nvm"
     echo "==============================================="
     echo
 
-    nvm unload
+    if command -v nvm >/dev/null 2>&1; then
+        nvm unload 2>/dev/null || true
+    fi
     rm -rf "$NVM_DIR"
-    # sed -i "/NVM_DIR[=\].+/d" "$HOME/.profile"
-    brew uninstall nvm
+    sed -i '/NVM_DIR/d' "$HOME/.profile" 2>/dev/null || true
+    if isMac && installed brew; then
+        brew uninstall nvm 2>/dev/null || true
+    fi
 
     echo
     echo "Finish!"