Skip to content
GitLab

Let Jest handle all file types

Merged Administrator requested to merge github/fork/gaearon/jest-transform into master

Created by: gaearon

In 0.8.x, we switched to treat all non-JS/CSS extensions as files by default (#1059, #1077).

However when we tried to do the same in Jest, we made a mistake which introduced false positives (#1145 (closed), #1147 (closed)).

We temporarily reverted this change in #1149 and reopened https://github.com/facebookincubator/create-react-app/issues/667#issuecomment-264693934. @cpojer suggested to use transform instead of moduleNameMapper so that we can match against the full paths.

This PR implements that. I verified that the following cases work:

  • Importing CSS both inside project directory and in node_modules (gives you `{})
  • Importing arbitrary files both inside project directory and in node_modules (gives you the filename)
  • Importing JS modules like ../something or lodash.assign (covers #1145 (closed), #1147 (closed)).

Fixes #667 (closed).