yarn.lock and task for tsec, https://github.com/microsoft/vscode/issues/105747

.vscode/tasks.json

@@ -125,7 +125,7 @@
 			"label": "Kill Build Web Extensions",
 			"group": "build",
 			"presentation": {
-				"reveal": "never",
+				"reveal": "never"
 			},
 			"problemMatcher": "$tsc"
 		},
@@ -195,5 +195,19 @@
 				"reveal": "silent"
 			}
 		},
+		{
+			"type": "npm",
+			"script": "tsec-compile-check",
+			"problemMatcher": [
+				{
+					"base": "$tsc",
+					"applyTo": "allDocuments",
+					"owner": "tsec"
+				},
+			],
+			"group": "build",
+			"label": "npm: tsec-compile-check",
+			"detail": "node_modules/tsec/bin/tsec -p src/tsconfig.json --noEmit"
+		}
 	]
 }

yarn.lock

@@ -262,6 +262,11 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-12.12.14.tgz#1c1d6e3c75dba466e0326948d56e8bd72a1903d2"
   integrity sha512-u/SJDyXwuihpwjXy7hOOghagLEV1KdAST6syfnOk6QZAMzZuWZqXy5aYYZbh8Jdpd4escVFP0MvftHNDb9pruA==
 
+"@types/node@^13.13.5":
+  version "13.13.15"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-13.13.15.tgz#fe1cc3aa465a3ea6858b793fd380b66c39919766"
+  integrity sha512-kwbcs0jySLxzLsa2nWUAGOd/s21WU1jebrEdtzhsj1D4Yps1EOuyI1Qcu+FD56dL7NRNIJtDDjcqIG22NwkgLw==
+
 "@types/semver@^5.4.0", "@types/semver@^5.5.0":
   version "5.5.0"
   resolved "https://registry.yarnpkg.com/@types/semver/-/semver-5.5.0.tgz#146c2a29ee7d3bae4bf2fcb274636e264c813c45"
@@ -9292,6 +9297,12 @@ ts-loader@^4.4.2:
     micromatch "^3.1.4"
     semver "^5.0.1"
 
+tsec@googleinterns/tsec:
+  version "0.0.1"
+  resolved "https://codeload.github.com/googleinterns/tsec/tar.gz/eb8abc0a58b16f97bb499833c21467fc6425260f"
+  dependencies:
+    "@types/node" "^13.13.5"
+
 tslib@^1.8.1, tslib@^1.9.0:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.9.3.tgz#d7e4dd79245d85428c4d7e4822a79917954ca286"