diff --git a/package-lock.json b/package-lock.json
index 0b273108..b94f125e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -40,7 +40,8 @@
         "acorn": {
             "version": "2.7.0",
             "resolved": "http://registry.npmjs.org/acorn/-/acorn-2.7.0.tgz",
-            "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc="
+            "integrity": "sha1-q259nYhqrKiwhbwzEreaGYQz8Oc=",
+            "optional": true
         },
         "acorn-globals": {
             "version": "1.0.9",
@@ -585,7 +586,8 @@
         "cssom": {
             "version": "0.3.4",
             "resolved": "https://registry.npmjs.org/cssom/-/cssom-0.3.4.tgz",
-            "integrity": "sha512-+7prCSORpXNeR4/fUP3rL+TzqtiFfhMvTd7uEqMdgPvLPt4+uzFUeufx5RHjGTACCargg/DiEt/moMQmvnfkog=="
+            "integrity": "sha512-+7prCSORpXNeR4/fUP3rL+TzqtiFfhMvTd7uEqMdgPvLPt4+uzFUeufx5RHjGTACCargg/DiEt/moMQmvnfkog==",
+            "optional": true
         },
         "cssstyle": {
             "version": "0.2.37",
@@ -2827,7 +2829,8 @@
         "prelude-ls": {
             "version": "1.1.2",
             "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
-            "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ="
+            "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
+            "optional": true
         },
         "preserve": {
             "version": "0.2.0",
@@ -3488,6 +3491,7 @@
             "version": "0.3.2",
             "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
             "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
+            "optional": true,
             "requires": {
                 "prelude-ls": "~1.1.2"
             }
diff --git a/package.json b/package.json
index 54ff1440..b317b76f 100644
--- a/package.json
+++ b/package.json
@@ -33,6 +33,7 @@
         "onCommand:leetcode.createSession",
         "onCommand:leetcode.refreshExplorer",
         "onCommand:leetcode.showProblem",
+        "onCommand:leetcode.showToSolveProblem",
         "onCommand:leetcode.searchProblem",
         "onCommand:leetcode.testSolution",
         "onCommand:leetcode.submitSolution",