in 1.8 comments are removed from empty blocks and unreachable places regardless of the unset --removeComments flag

[zpdDG4gta8XKpMCd]

Case 1

typescript

 try {
                // AB: might throw if a property is readonly
                data[key] = null;
            } catch(e) {
                // AB: Here we are swallowing the exception on the attempt to write to a read-only property.
                // An alternative for using try/catch would be to use Object.getOwnPropertyDescriptor
                // which, when called for every single enumerable property, is slow, compared to
                // a few failed attempts to write to read only.
            }

javascript

try {
                    // AB: might throw if a property is readonly
                    data[key] = null;
                }
                catch (e) {
                }

Case 2

typescript

    try {
        stack = undefined;
        /* tslint:disable:no-throw */
        throw new Error();
        /* tslint:enable:no-throw */
    } catch (e) {
        stack = e.stack.split('\n');
    }

javascript

try {
            stack = undefined;
            /* tslint:disable:no-throw */
            throw new Error();
        }
        catch (e) {
            stack = e.stack.split('\n');
        }