Method register

src/server/web/public/terminal.js:3509–3511

(e3)

            this._disposables.length = 0;
          }
          register(e3) {
            return this._disposables.push(e3), e3;
          }
          unregister(e3) {
            const t3 = this._disposables.indexOf(e3);
            -1 !== t3 && this._disposables.splice(t3, 1);