tests/cases/compiler/typecheckIfCondition.ts(4,10): error TS2580: Cannot find name 'module'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node`. tests/cases/compiler/typecheckIfCondition.ts(4,26): error TS2580: Cannot find name 'module'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node`. ==== tests/cases/compiler/typecheckIfCondition.ts (2 errors) ==== // both uses of module should be an undefined symbol function myWrapper() { if (!module.exports) module.exports = ""; ~~~~~~ !!! error TS2580: Cannot find name 'module'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node`. ~~~~~~ !!! error TS2580: Cannot find name 'module'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node`. var x = null; // don't want to baseline output }