perf: cache .babelrc search

Author: eddyerburgh

package.json

@@ -20,14 +20,15 @@
     "release": "build/release.sh",
     "release:note": "node build/gen-release-note.js",
     "test": "npm run lint && ./test.sh",
-    "unit": "cross-env BABEL_ENV=test jest --no-cache --coverage --coverageDirectory test/coverage --runInBand"
+    "unit": "cross-env BABEL_ENV=test jest test --runInBand --coverage --coverageDirectory test/coverage"
   },
   "author": "Edd Yerburgh",
   "license": "MIT",
   "devDependencies": {
     "babel-jest": "^20.0.3",
     "babel-plugin-istanbul": "^4.1.4",
     "babel-preset-env": "^1.6.0",
+    "clear-module": "^2.1.0",
     "coffee-script": "^1.12.7",
     "conventional-changelog": "^1.1.5",
     "cross-env": "^5.0.2",

test/Babel.spec.js

@@ -7,6 +7,11 @@ import {
   writeFileSync,
   renameSync
 } from 'fs'
+const clearModule = require('clear-module')
+
+beforeEach(() => {
+  clearModule.all()
+})
 
 test('processes .vue files', () => {
   const vm = new Vue(Basic).$mount()

yarn.lock

@@ -804,12 +804,24 @@ builtin-modules@^1.0.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/builtin-modules/-/builtin-modules-1.1.1.tgz#270f076c5a72c02f5b65a47df94c5fe3a278892f"
 
+caller-callsite@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/caller-callsite/-/caller-callsite-2.0.0.tgz#847e0fce0a223750a9a027c54b33731ad3154134"
+  dependencies:
+    callsites "^2.0.0"
+
 caller-path@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/caller-path/-/caller-path-0.1.0.tgz#94085ef63581ecd3daa92444a8fe94e82577751f"
   dependencies:
     callsites "^0.2.0"
 
+caller-path@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/caller-path/-/caller-path-2.0.0.tgz#468f83044e369ab2010fac5f06ceee15bb2cb1f4"
+  dependencies:
+    caller-callsite "^2.0.0"
+
 callsites@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/callsites/-/callsites-0.2.0.tgz#afab96262910a7f33c19a5775825c69f34e350ca"
@@ -895,6 +907,13 @@ clean-css@^3.1.9, clean-css@^3.3.0:
     commander "2.8.x"
     source-map "0.4.x"
 
+clear-module@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/clear-module/-/clear-module-2.1.0.tgz#3508a36e12a47cbd98001e99257d7b0012ebf208"
+  dependencies:
+    caller-path "^2.0.0"
+    resolve-from "^3.0.0"
+
 cli-cursor@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-2.1.0.tgz#b35dac376479facc3e94747d41d0d0f5238ffcb5"
@@ -3286,6 +3305,10 @@ resolve-from@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-1.0.1.tgz#26cbfe935d1aeeeabb29bc3fe5aeb01e93d44226"
 
+resolve-from@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-3.0.0.tgz#b22c7af7d9d6881bc8b6e653335eebcb0a188748"
+
 resolve@1.1.7:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.1.7.tgz#203114d82ad2c5ed9e8e0411b3932875e889e97b"