## Current behavior ``` UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'compiler' of undefined ``` ## Environment - **fork-ts-checker-webpack-plugin**: v1.3.6 The bug was introduced in this commit https://github.com/Realytics/fork-ts-checker-webpack-plugin/commit/489dc89b1d4b043128837c8588d2c3c9ad6dd4ec
