tests/cases/conformance/es2017/useSharedArrayBuffer3.ts(1,16): error TS2583: Cannot find name 'SharedArrayBuffer'. Do you need to change your target library? Try changing the 'lib' compiler option to 'es2017' or later. ==== tests/cases/conformance/es2017/useSharedArrayBuffer3.ts (1 errors) ==== var foge = new SharedArrayBuffer(1024); ~~~~~~~~~~~~~~~~~ !!! error TS2583: Cannot find name 'SharedArrayBuffer'. Do you need to change your target library? Try changing the 'lib' compiler option to 'es2017' or later. var bar = foge.slice(1, 10); var len = foge.byteLength;