tests/cases/conformance/es6/unicodeExtendedEscapes/unicodeExtendedEscapesInTemplates12_ES6.ts(2,21): error TS1195: An extended Unicode escape value must be between 0x0 and 0x10FFFF inclusive.
==== tests/cases/conformance/es6/unicodeExtendedEscapes/unicodeExtendedEscapesInTemplates12_ES6.ts (1 errors) ====
var x = `\u{FFFFFFFF}`;
!!! error TS1195: An extended Unicode escape value must be between 0x0 and 0x10FFFF inclusive.