Function setContextFlag

test/fixtures/snapshot/typescript.js:31849–31856

(val, flag)

            }
        }
        function setContextFlag(val, flag) {
            if (val) {
                contextFlags |= flag;
            }
            else {
                contextFlags &= ~flag;
            }
        }
        function setDisallowInContext(val) {
            setContextFlag(val, 4096 /* NodeFlags.DisallowInContext */);
        }