feat: add resolve command for resolving legacy version queries (#353)

lib/commands/command-resolve.bash

@@ -0,0 +1,28 @@
+#! /usr/bin/env bash
+
+set -eu -o pipefail
+
+source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/../utils.sh"
+
+legacy_strat="${ASDF_NODEJS_LEGACY_FILE_DYNAMIC_STRATEGY-}"
+queries=()
+
+for arg; do
+	case "$arg" in
+	--latest-installed)
+		legacy_strat=latest_installed
+		;;
+
+	--latest-available)
+		legacy_strat=latest_available
+		;;
+
+	*)
+		queries+=("$arg")
+		;;
+	esac
+done
+
+for query in "${queries[@]}"; do
+	ASDF_NODEJS_LEGACY_FILE_DYNAMIC_STRATEGY="$legacy_strat" resolve_version "$query"
+done

lib/utils.sh

@@ -104,9 +104,12 @@ resolve_legacy_version() {
 
   if [ "$resolved" ]; then
     printf "%s\n" "$resolved"
-  else
+  elif [ "$strategy" != latest_available ]; then
     # If no version is installed, fallback to latest_available, so `asdf install nodejs` works
     resolve_legacy_version latest_available "$query"
+  else
+    # Give up and pretty the query itself
+    printf "%s\n" "$query"
   fi
 }