fix(ls): do not exit with error when all problems are extraneous deps

PR-URL: https://github.com/npm/cli/pull/3086
Credit: @nlf
Close: #3086
Reviewed-by: @wraithgar, @ruyadorno

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/ls.js b/lib/ls.js
index 65b3ddfe7..56d657945 100644
--- a/lib/ls.js
+++ b/lib/ls.js
@@ -166,7 +166,10 @@ class LS extends BaseCommand {
       )
     }
 
-    if (problems.size) {
+    const shouldThrow = problems.size &&
+      ![...problems].every(problem => problem.startsWith('extraneous:'))
+
+    if (shouldThrow) {
       throw Object.assign(
         new Error([...problems].join(EOL)),
         { code: 'ELSPROBLEMS' }