Function setTTY

ng-dev/utils/test/resolve-yarn-bin.spec.ts:128–139

(val: boolean)

    });

    function setTTY(val: boolean) {
      Object.defineProperty(process.stdout, 'isTTY', {
        value: val,
        configurable: true,
        writable: true,
      });
      Object.defineProperty(process.stdin, 'isTTY', {
        value: val,
        configurable: true,
        writable: true,
      });
    }

    it('should ignore local yarn path and warn if untrusted (non-TTY, no env)', async () => {
      setTTY(false);