'How to make an rxjs marble sync grouping only take up one frame

According to https://github.com/ReactiveX/rxjs/blob/master/docs_app/content/guide/testing/marble-testing.md#marble-syntax

'--(abc)-|': on frame 20, emit a, b, and c, then on frame 80 complete

So how do I represent "on frame 20, emit a, b, and c, then on frame 40 complete.

Ie how can I stop the sync group itself taking up frames?

rxjsmarblejasmine-marbles


Solution 1:[1]

cartant has answered this question in his comment.

There's no way to do it - sync groups will always take up extra frames even though all members occur in the frame of the opening bracket.

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Source: Stack Overflow

Solution Source
Solution 1 Giles Bradshaw

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