Add jsx as valid extension in TypeScript example (#3929)
Add jsx as valid extension in TypeScript example (#3929)


facebook/jest,facebook/jest,bookman25/jest,skovhus/jest,cpojer/jest,ide/jest,facebook/jest,skovhus/jest,cpojer/jest,bookman25/jest,skovhus/jest,cpojer/jest,ide/jest,ide/jest,bookman25/jest