diff --git a/.yalc/mobx-react/package-lock.json b/.yalc/mobx-react/package-lock.json
index 7830c083..cb4bf396 100644
--- a/.yalc/mobx-react/package-lock.json
+++ b/.yalc/mobx-react/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "mobx-react",
-  "version": "5.4.0-alpha",
+  "version": "5.4.0-alpha-32c1289b",
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   "requires": true,
   "dependencies": {
@@ -748,6 +748,23 @@
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+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.7.7.tgz",
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+      "dev": true,
+      "requires": {
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+        }
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@@ -787,6 +804,17 @@
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+      "resolved": "https://registry.npmjs.org/@jest/types/-/types-24.9.0.tgz",
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+      "dev": true,
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+        "@types/istanbul-reports": "^1.1.1",
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@@ -796,6 +824,12 @@
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+      "resolved": "https://registry.npmjs.org/@sheerun/mutationobserver-shim/-/mutationobserver-shim-0.3.2.tgz",
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+      "dev": true
+    },
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@@ -811,6 +845,31 @@
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       "dev": true
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+    "@types/istanbul-lib-coverage": {
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+      "resolved": "https://registry.npmjs.org/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.1.tgz",
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+      "dev": true
+    },
+    "@types/istanbul-lib-report": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@types/istanbul-lib-report/-/istanbul-lib-report-1.1.1.tgz",
+      "integrity": "sha512-3BUTyMzbZa2DtDI2BkERNC6jJw2Mr2Y0oGI7mRxYNBPxppbtEK1F66u3bKwU2g+wxwWI7PAoRpJnOY1grJqzHg==",
+      "dev": true,
+      "requires": {
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+    "@types/istanbul-reports": {
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+      "resolved": "https://registry.npmjs.org/@types/istanbul-reports/-/istanbul-reports-1.1.1.tgz",
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+      "dev": true,
+      "requires": {
+        "@types/istanbul-lib-coverage": "*",
+        "@types/istanbul-lib-report": "*"
+      }
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       "resolved": "https://registry.npmjs.org/@types/node/-/node-10.12.1.tgz",
@@ -843,6 +902,21 @@
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+      "resolved": "https://registry.npmjs.org/@types/yargs/-/yargs-13.0.4.tgz",
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+      "dev": true,
+      "requires": {
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+      "resolved": "https://registry.npmjs.org/@types/yargs-parser/-/yargs-parser-13.1.0.tgz",
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@@ -2589,12 +2663,50 @@
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-          "resolved": "http://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
+          "resolved": "https://registry.npmjs.org/domelementtype/-/domelementtype-1.1.3.tgz",
           "integrity": "sha1-vSh3PiZCiBrsUVRJJCmcXNgiGFs=",
           "dev": true
         }
       }
     },
+    "dom-testing-library": {
+      "version": "3.19.4",
+      "resolved": "https://registry.npmjs.org/dom-testing-library/-/dom-testing-library-3.19.4.tgz",
+      "integrity": "sha512-GJOx8CLpnkvM3takILOsld/itUUc9+7Qh6caN1Spj6+9jIgNPY36fsvoH7sEgYokC0lBRdttO7G7fIFYCXlmcA==",
+      "dev": true,
+      "requires": {
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+        "@sheerun/mutationobserver-shim": "^0.3.2",
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+          "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-24.9.0.tgz",
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+            "ansi-styles": "^3.2.0",
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+          "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.12.0.tgz",
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-          "resolved": "http://registry.npmjs.org/core-js/-/core-js-1.2.7.tgz",
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@@ -3136,7 +3248,8 @@
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@@ -3157,12 +3270,14 @@
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           "bundled": true,
           "dev": true,
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@@ -3177,17 +3292,20 @@
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@@ -3304,7 +3422,8 @@
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@@ -3316,6 +3435,7 @@
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@@ -3330,6 +3450,7 @@
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@@ -3337,12 +3458,14 @@
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@@ -3361,6 +3484,7 @@
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@@ -3441,7 +3565,8 @@
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@@ -3453,6 +3578,7 @@
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@@ -3538,7 +3664,8 @@
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@@ -3593,6 +3721,7 @@
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@@ -3636,12 +3765,14 @@
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@@ -6174,6 +6305,12 @@
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         "prop-types": "^15.6.2",
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@@ -7053,6 +7201,16 @@
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     "read-pkg": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/read-pkg/-/read-pkg-1.1.0.tgz",
@@ -8383,7 +8541,7 @@
     },
     "strip-ansi": {
       "version": "3.0.1",
-      "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
       "dev": true,
       "requires": {
@@ -8490,7 +8648,7 @@
       "dependencies": {
         "readable-stream": {
           "version": "2.3.6",
-          "resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.6.tgz",
           "integrity": "sha512-tQtKA9WIAhBF3+VLAseyMqZeBjW0AHJoxOtYqSUZNJxauErmLbVm2FW1y+J/YA9dUrAC39ITejlZWhVIwawkKw==",
           "dev": true,
           "requires": {
@@ -8521,7 +8679,7 @@
       "dependencies": {
         "uuid": {
           "version": "2.0.3",
-          "resolved": "http://registry.npmjs.org/uuid/-/uuid-2.0.3.tgz",
+          "resolved": "https://registry.npmjs.org/uuid/-/uuid-2.0.3.tgz",
           "integrity": "sha1-Z+LoY3lyFVMN/zGOW/nc6/1Hsho=",
           "dev": true
         }
@@ -8939,6 +9097,12 @@
         "browser-process-hrtime": "^0.1.2"
       }
     },
+    "wait-for-expect": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/wait-for-expect/-/wait-for-expect-1.3.0.tgz",
+      "integrity": "sha512-8fJU7jiA96HfGPt+P/UilelSAZfhMBJ52YhKzlmZQvKEZU2EcD1GQ0yqGB6liLdHjYtYAoGVigYwdxr5rktvzA==",
+      "dev": true
+    },
     "walker": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/walker/-/walker-1.0.7.tgz",
diff --git a/.yalc/mobx-react/yarn.lock b/.yalc/mobx-react/yarn.lock
index 7e7333eb..b88d5a9c 100644
--- a/.yalc/mobx-react/yarn.lock
+++ b/.yalc/mobx-react/yarn.lock
@@ -903,7 +903,7 @@ async-limiter@~1.0.0:
   resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
   integrity sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg==
 
-async@^2.1.4, async@^2.5.0:
+async@^2.1.4:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/async/-/async-2.6.1.tgz#b245a23ca71930044ec53fa46aa00a3e87c6a610"
   integrity sha512-fNEiL2+AZt6AlAw/29Cr0UDe4sRAHCpEHh54WMz+Bb7QfNcFw4h3loofyJpLeQs4Yx7yuqu/2dLgM5hKOs6HlQ==
@@ -1454,6 +1454,11 @@ commander@~2.17.1:
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.17.1.tgz#bd77ab7de6de94205ceacc72f1716d29f20a77bf"
   integrity sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg==
 
+commander@~2.20.3:
+  version "2.20.3"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
+  integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
+
 component-emitter@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/component-emitter/-/component-emitter-1.2.1.tgz#137918d6d78283f7df7a6b7c5a63e140e69425e6"
@@ -2370,11 +2375,11 @@ gzip-size@^5.0.0:
     pify "^3.0.0"
 
 handlebars@^4.0.3:
-  version "4.0.12"
-  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.0.12.tgz#2c15c8a96d46da5e266700518ba8cb8d919d5bc5"
-  integrity sha512-RhmTekP+FZL+XNhwS1Wf+bTTZpdLougwt5pcgA1tuz6Jcx0fpH/7z0qd71RKnZHBCxIRBHfBOnio4gViPemNzA==
+  version "4.5.3"
+  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.5.3.tgz#5cf75bd8714f7605713511a56be7c349becb0482"
+  integrity sha512-3yPecJoJHK/4c6aZhSvxOyG4vJKDshV36VHp0iVCDVh7o9w2vwi3NSnL2MMPj3YdduqaBcu7cGbggJQM0br9xA==
   dependencies:
-    async "^2.5.0"
+    neo-async "^2.6.0"
     optimist "^0.6.1"
     source-map "^0.6.1"
   optionalDependencies:
@@ -3890,6 +3895,11 @@ needle@^2.2.1:
     iconv-lite "^0.4.4"
     sax "^1.2.4"
 
+neo-async@^2.6.0:
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/neo-async/-/neo-async-2.6.1.tgz#ac27ada66167fa8849a6addd837f6b189ad2081c"
+  integrity sha512-iyam8fBuCUpWeKPGpaNMetEocMt364qkCsfL9JuhjXX6dRnguRVOfk2GZaDpPjcOKiiXCPINZC1GczQ7iTq3Zw==
+
 node-abi@^2.2.0:
   version "2.4.5"
   resolved "https://registry.yarnpkg.com/node-abi/-/node-abi-2.4.5.tgz#1fd1fb66641bf3c4dcf55a5490ba10c467ead80c"
@@ -5605,7 +5615,15 @@ ua-parser-js@^0.7.18:
   resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.18.tgz#a7bfd92f56edfb117083b69e31d2aa8882d4b1ed"
   integrity sha512-LtzwHlVHwFGTptfNSgezHp7WUlwiqb0gA9AALRbKaERfxwJoiX0A73QbTToxteIAuIaFshhgIZfqK8s7clqgnA==
 
-uglify-js@^3.1.4, uglify-js@^3.4.9:
+uglify-js@^3.1.4:
+  version "3.7.3"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.7.3.tgz#f918fce9182f466d5140f24bb0ff35c2d32dcc6a"
+  integrity sha512-7tINm46/3puUA4hCkKYo4Xdts+JDaVC9ZPRcG8Xw9R4nhO/gZgUM3TENq8IF4Vatk8qCig4MzP/c8G4u2BkVQg==
+  dependencies:
+    commander "~2.20.3"
+    source-map "~0.6.1"
+
+uglify-js@^3.4.9:
   version "3.4.9"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.4.9.tgz#af02f180c1207d76432e473ed24a28f4a782bae3"
   integrity sha512-8CJsbKOtEbnJsTyv6LE6m6ZKniqMiFWmm9sRbopbkGs3gMPPfd3Fh8iIA4Ykv5MgaTbqHr4BaoGLJLZNhsrW1Q==