Fix up prettier wrapper script

prettier.sh

@@ -1,4 +1,4 @@
-#!/bin/bash 
+#!/bin/bash
 
 set -uo pipefail
 IFS=$'\n\t'
@@ -7,18 +7,21 @@ DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 
 source "$DIR/_reformat-common.bash"
 
+set -e
+
 file="$1"
 
-wrflog running against file "$file"
+pushd "$(dirname "$file")" 2>&1
 
-if [[ "$WOULD_REFORMAT" = "would_reformat" ]] ; then
+if [[ "$WOULD_REFORMAT" = "would_reformat" ]]; then
+    set +e
     out=$(npx prettier --check "$file" 2>&1 >/dev/null)
     retval="$?"
-    echo "$out"
+    set -e
     exit "$retval"
 fi
 
-if [[ "$WOULD_REFORMAT" = "do_reformat" ]] ; then
+if [[ "$WOULD_REFORMAT" = "do_reformat" ]]; then
     out=$(npx prettier --write "$file" 2>&1 >/dev/null)
     retval="$?"