package.json locking to *.X revisions

package.json

@@ -25,11 +25,11 @@
     "object-assign": "4.X"
   },
   "devDependencies": {
-    "JSONStream": "^1.3.1",
-    "chai": "4.1.2",
-    "eslint": "4.13.0",
+    "JSONStream": "1.X",
+    "chai": "4.X",
+    "eslint": "4.X",
     "hook-std": "0.X",
     "memwatch-next": "0.3.X",
-    "mocha": "4.0.1"
+    "mocha": "4.X"
   }
 }

yarn.lock

@@ -2,7 +2,7 @@
 # yarn lockfile v1
 
 
-JSONStream@^1.3.1:
+JSONStream@1.X:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/JSONStream/-/JSONStream-1.3.1.tgz#707f761e01dae9e16f1bcf93703b78c70966579a"
   dependencies:
@@ -119,7 +119,7 @@ callsites@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/callsites/-/callsites-0.2.0.tgz#afab96262910a7f33c19a5775825c69f34e350ca"
 
-chai@4.1.2:
+chai@4.X:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/chai/-/chai-4.1.2.tgz#0f64584ba642f0f2ace2806279f4f06ca23ad73c"
   dependencies:
@@ -298,7 +298,7 @@ eslint-scope@^3.7.1:
     esrecurse "^4.1.0"
     estraverse "^4.1.1"
 
-eslint@4.13.0:
+eslint@4.X:
   version "4.13.0"
   resolved "https://registry.yarnpkg.com/eslint/-/eslint-4.13.0.tgz#1991aa359586af83877bde59de9d41f53e20826d"
   dependencies:
@@ -652,7 +652,7 @@ [email protected], mkdirp@^0.5.1:
   dependencies:
     minimist "0.0.8"
 
-mocha@4.0.1:
+mocha@4.X:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/mocha/-/mocha-4.0.1.tgz#0aee5a95cf69a4618820f5e51fa31717117daf1b"
   dependencies: