diff --git a/test/fixtures/transformation/es6-modules-system/exports-default/actual.js b/test/fixtures/transformation/.es6-modules-system/exports-default/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/exports-default/actual.js
rename to test/fixtures/transformation/.es6-modules-system/exports-default/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/exports-default/expected.js b/test/fixtures/transformation/.es6-modules-system/exports-default/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/exports-default/expected.js
rename to test/fixtures/transformation/.es6-modules-system/exports-default/expected.js
diff --git a/test/fixtures/transformation/es6-modules-system/exports-from/actual.js b/test/fixtures/transformation/.es6-modules-system/exports-from/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/exports-from/actual.js
rename to test/fixtures/transformation/.es6-modules-system/exports-from/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/exports-from/expected.js b/test/fixtures/transformation/.es6-modules-system/exports-from/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/exports-from/expected.js
rename to test/fixtures/transformation/.es6-modules-system/exports-from/expected.js
diff --git a/test/fixtures/transformation/es6-modules-system/exports-named/actual.js b/test/fixtures/transformation/.es6-modules-system/exports-named/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/exports-named/actual.js
rename to test/fixtures/transformation/.es6-modules-system/exports-named/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/exports-named/expected.js b/test/fixtures/transformation/.es6-modules-system/exports-named/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/exports-named/expected.js
rename to test/fixtures/transformation/.es6-modules-system/exports-named/expected.js
diff --git a/test/fixtures/transformation/es6-modules-system/exports-variable/actual.js b/test/fixtures/transformation/.es6-modules-system/exports-variable/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/exports-variable/actual.js
rename to test/fixtures/transformation/.es6-modules-system/exports-variable/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/exports-variable/expected.js b/test/fixtures/transformation/.es6-modules-system/exports-variable/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/exports-variable/expected.js
rename to test/fixtures/transformation/.es6-modules-system/exports-variable/expected.js
diff --git a/test/fixtures/transformation/es6-modules-system/hoist-function-exports/actual.js b/test/fixtures/transformation/.es6-modules-system/hoist-function-exports/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/hoist-function-exports/actual.js
rename to test/fixtures/transformation/.es6-modules-system/hoist-function-exports/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/hoist-function-exports/expected.js b/test/fixtures/transformation/.es6-modules-system/hoist-function-exports/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/hoist-function-exports/expected.js
rename to test/fixtures/transformation/.es6-modules-system/hoist-function-exports/expected.js
diff --git a/test/fixtures/transformation/es6-modules-system/imports-default/actual.js b/test/fixtures/transformation/.es6-modules-system/imports-default/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/imports-default/actual.js
rename to test/fixtures/transformation/.es6-modules-system/imports-default/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/imports-default/expected.js b/test/fixtures/transformation/.es6-modules-system/imports-default/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/imports-default/expected.js
rename to test/fixtures/transformation/.es6-modules-system/imports-default/expected.js
diff --git a/test/fixtures/transformation/es6-modules-system/imports-glob/actual.js b/test/fixtures/transformation/.es6-modules-system/imports-glob/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/imports-glob/actual.js
rename to test/fixtures/transformation/.es6-modules-system/imports-glob/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/imports-glob/expected.js b/test/fixtures/transformation/.es6-modules-system/imports-glob/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/imports-glob/expected.js
rename to test/fixtures/transformation/.es6-modules-system/imports-glob/expected.js
diff --git a/test/fixtures/transformation/es6-modules-system/imports-mixing/actual.js b/test/fixtures/transformation/.es6-modules-system/imports-mixing/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/imports-mixing/actual.js
rename to test/fixtures/transformation/.es6-modules-system/imports-mixing/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/imports-mixing/expected.js b/test/fixtures/transformation/.es6-modules-system/imports-mixing/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/imports-mixing/expected.js
rename to test/fixtures/transformation/.es6-modules-system/imports-mixing/expected.js
diff --git a/test/fixtures/transformation/es6-modules-system/imports-named/actual.js b/test/fixtures/transformation/.es6-modules-system/imports-named/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/imports-named/actual.js
rename to test/fixtures/transformation/.es6-modules-system/imports-named/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/imports-named/expected.js b/test/fixtures/transformation/.es6-modules-system/imports-named/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/imports-named/expected.js
rename to test/fixtures/transformation/.es6-modules-system/imports-named/expected.js
diff --git a/test/fixtures/transformation/es6-modules-system/imports/actual.js b/test/fixtures/transformation/.es6-modules-system/imports/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/imports/actual.js
rename to test/fixtures/transformation/.es6-modules-system/imports/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/imports/expected.js b/test/fixtures/transformation/.es6-modules-system/imports/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/imports/expected.js
rename to test/fixtures/transformation/.es6-modules-system/imports/expected.js
diff --git a/test/fixtures/transformation/es6-modules-system/options.json b/test/fixtures/transformation/.es6-modules-system/options.json
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/options.json
rename to test/fixtures/transformation/.es6-modules-system/options.json
diff --git a/test/fixtures/transformation/es6-modules-system/overview/actual.js b/test/fixtures/transformation/.es6-modules-system/overview/actual.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/overview/actual.js
rename to test/fixtures/transformation/.es6-modules-system/overview/actual.js
diff --git a/test/fixtures/transformation/es6-modules-system/overview/expected.js b/test/fixtures/transformation/.es6-modules-system/overview/expected.js
similarity index 100%
rename from test/fixtures/transformation/es6-modules-system/overview/expected.js
rename to test/fixtures/transformation/.es6-modules-system/overview/expected.js