Upgrade mem to version 4.0.0.

See: sindresorhus/memoize/pull/19.
Signed-off-by: Akos Kitta <kittaakos@typefox.io>

package.json

@@ -6,8 +6,9 @@
     "yarn": "1.0.x || >=1.2.1",
     "node": ">=10.2.0"
   },
-  "resolution": {
-    "**/@types/node": "~10.3.6"
+  "resolutions": {
+    "**/@types/node": "~10.3.6",
+    "**/mem": "^4.0.0"
   },
   "devDependencies": {
     "@types/chai": "^4.0.1",

yarn.lock

@@ -312,15 +312,7 @@
   version "2.2.48"
   resolved "https://registry.yarnpkg.com/@types/mocha/-/mocha-2.2.48.tgz#3523b126a0b049482e1c3c11877460f76622ffab"
 
-"@types/node@*":
-  version "10.7.1"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-10.7.1.tgz#b704d7c259aa40ee052eec678758a68d07132a2e"
-
-"@types/node@^8.0.24", "@types/node@^8.0.26":
-  version "8.10.26"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-8.10.26.tgz#950e3d4e6b316ba6e1ae4e84d9155aba67f88c2f"
-
-"@types/node@~10.3.6":
+"@types/node@*", "@types/node@^8.0.24", "@types/node@^8.0.26", "@types/node@~10.3.6":
   version "10.3.6"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.3.6.tgz#ea8aab9439b59f40d19ec5f13b44642344872b11"
   integrity sha512-h7VDRFL8IhdPw1JjiNVvhr+WynfKW09q2BOflIOA0yeuXNeXBP1bIRuBrysSryH4keaJ5bYUNp63aIyQL9YpDQ==
@@ -6203,6 +6195,13 @@ makeerror@1.0.x:
   dependencies:
     tmpl "1.0.x"
 
+map-age-cleaner@^0.1.1:
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/map-age-cleaner/-/map-age-cleaner-0.1.3.tgz#7d583a7306434c055fe474b0f45078e6e1b4b92a"
+  integrity sha512-bJzx6nMoP6PDLPBFmg7+xRKeFZvFboMrGlxmNj9ClvX53KrmvM5bXFXEWjbz4cz1AFn+jWJ9z/DJSz7hrs0w3w==
+  dependencies:
+    p-defer "^1.0.0"
+
 map-cache@^0.2.2:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/map-cache/-/map-cache-0.2.2.tgz#c32abd0bd6525d9b051645bb4f26ac5dc98a0dbf"
@@ -6302,11 +6301,14 @@ mem-fs@^1.1.0:
     vinyl "^1.1.0"
     vinyl-file "^2.0.0"
 
-mem@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/mem/-/mem-1.1.0.tgz#5edd52b485ca1d900fe64895505399a0dfa45f76"
+mem@^1.1.0, mem@^4.0.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/mem/-/mem-4.3.0.tgz#461af497bc4ae09608cdb2e60eefb69bff744178"
+  integrity sha512-qX2bG48pTqYRVmDB37rn/6PT7LcR8T7oAX3bf99u1Tt1nzxYfxkgqDwUwolPlXweM0XzBOBFzSx4kfp7KP1s/w==
   dependencies:
-    mimic-fn "^1.0.0"
+    map-age-cleaner "^0.1.1"
+    mimic-fn "^2.0.0"
+    p-is-promise "^2.0.0"
 
 memory-fs@^0.4.0, memory-fs@~0.4.1:
   version "0.4.1"
@@ -6432,6 +6434,11 @@ mimic-fn@^1.0.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.2.0.tgz#820c86a39334640e99516928bd03fca88057d022"
 
+mimic-fn@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
+  integrity sha512-OqbOk5oEQeAZ8WXWydlu9HJjz9WVdEIvamMCcXmuqUYjTknH/sqsWvhQ3vgwKFRR1HpjvNBKQ37nbJgYzGqGcg==
+
 mimic-response@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.1.tgz#4923538878eef42063cb8a3e3b0798781487ab1b"
@@ -7162,6 +7169,11 @@ p-debounce@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-debounce/-/p-debounce-1.0.0.tgz#cb7f2cbeefd87a09eba861e112b67527e621e2fd"
 
+p-defer@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-defer/-/p-defer-1.0.0.tgz#9f6eb182f6c9aa8cd743004a7d4f96b196b0fb0c"
+  integrity sha1-n26xgvbJqozXQwBKfU+WsZaw+ww=
+
 p-each-series@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-each-series/-/p-each-series-1.0.0.tgz#930f3d12dd1f50e7434457a22cd6f04ac6ad7f71"
@@ -7176,6 +7188,11 @@ p-is-promise@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/p-is-promise/-/p-is-promise-1.1.0.tgz#9c9456989e9f6588017b0434d56097675c3da05e"
 
+p-is-promise@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/p-is-promise/-/p-is-promise-2.1.0.tgz#918cebaea248a62cf7ffab8e3bca8c5f882fc42e"
+  integrity sha512-Y3W0wlRPK8ZMRbNq97l4M5otioeA5lm1z7bkNkxCka8HSPjR0xRWmpCmc9utiaLP9Jb1eD8BgeIxTW4AIF45Pg==
+
 p-lazy@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-lazy/-/p-lazy-1.0.0.tgz#ec53c802f2ee3ac28f166cc82d0b2b02de27a835"