Version checking

By default, ts-jest supports a range of versions for jest/typescript. One uses incompatible versions will receive a warning message while running tests. This warning message can be opt-out by setting environment variable TS_JEST_DISABLE_VER_CHECKER:

Linux/MacOS

export TS_JEST_DISABLE_VER_CHECKER=true

Windows

set TS_JEST_DISABLE_VER_CHECKER=true

Note

As long as the environment variable TS_JEST_DISABLE_VER_CHECKER stays, the warning message will no longer show. This can lead to unexpected errors due to the usage of incompatible versions' dependencies. Use this environment variable with precautions.