Switching to corejs 3

package.json

@@ -31,8 +31,8 @@
   },
   "homepage": "https://github.com/ianwalter/decision-tree#readme",
   "dependencies": {
-    "@babel/runtime": "^7.3.4",
-    "@ianwalter/base-error": "^4.0.3"
+    "@babel/runtime-corejs3": "^7.4.4",
+    "@ianwalter/base-error": "^5.0.0"
   },
   "devDependencies": {
     "@ianwalter/babel-preset-lib": "^1.0.4",

yarn.lock

@@ -586,7 +586,15 @@
     js-levenshtein "^1.1.3"
     semver "^5.3.0"
 
-"@babel/runtime@^7.2.0", "@babel/runtime@^7.3.1", "@babel/runtime@^7.3.4":
+"@babel/runtime-corejs3@^7.4.4":
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/runtime-corejs3/-/runtime-corejs3-7.4.4.tgz#37fab72b23e6c7024e8ae494a2cd019cae2a2206"
+  integrity sha512-9uYCgQvCVw4Jl5vVyTt6ZYIAgsLyAKx0CvBqOJW0D/bRx/jSOQS1A+31GiisgKhgyTt3/CWnbdGzFxxw8NOtlw==
+  dependencies:
+    core-js-pure "^3.0.0"
+    regenerator-runtime "^0.13.2"
+
+"@babel/runtime@^7.2.0", "@babel/runtime@^7.3.1":
   version "7.4.3"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.4.3.tgz#79888e452034223ad9609187a0ad1fe0d2ad4bdc"
   integrity sha512-9lsJwJLxDh/T3Q3SZszfWOTkk3pHbkmH+3KY+zwIDmsNlxsumuhS2TH3NIpktU4kNvfzy+k3eLT7aTJSPTo0OA==
@@ -701,12 +709,12 @@
     "@babel/plugin-transform-runtime" "^7.2.0"
     "@babel/preset-env" "^7.3.1"
 
-"@ianwalter/base-error@^4.0.3":
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/@ianwalter/base-error/-/base-error-4.0.3.tgz#182ea754f2f3f4edf48ffdf78270e1741e9a0d98"
-  integrity sha512-sHTY8r0pvaih51vr8wJi6zZZAYiMPZdguhw6nYLtmjMtJ5xdUNQv2HFFDh56kj+RudncbW7JLWcDeVB8pX9yDQ==
+"@ianwalter/base-error@^5.0.0":
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/@ianwalter/base-error/-/base-error-5.0.0.tgz#678f064158887507d0f5aeca843928242b87af7f"
+  integrity sha512-7dqcdsriXRwfneNsVR2YttoS9Qn+vdaort0Gc3GdnPB4pqGkCJZJU0fYdPO7ttMxm85iuQPutoPrIn0zDIcQ9A==
   dependencies:
-    "@babel/runtime" "^7.2.0"
+    "@babel/runtime-corejs3" "^7.4.4"
 
 "@ianwalter/bff@^4.0.0":
   version "4.0.1"
@@ -1440,6 +1448,11 @@ copy-descriptor@^0.1.0:
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
   integrity sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=
 
+core-js-pure@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/core-js-pure/-/core-js-pure-3.0.1.tgz#37358fb0d024e6b86d443d794f4e37e949098cbe"
+  integrity sha512-mSxeQ6IghKW3MoyF4cz19GJ1cMm7761ON+WObSyLfTu/Jn3x7w4NwNFnrZxgl4MTSvYYepVLNuRtlB4loMwJ5g==
+
 cosmiconfig@^5.1.0:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-5.2.0.tgz#45038e4d28a7fe787203aede9c25bca4a08b12c8"