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Fix Javascript busy loop when trying to delete tokens from an empty tokenizer
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Authored by epriestley on Jun 1 2018, 8:08 PM.
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Summary

Fixes T13147. In D19437, I changed this logic to support deleting the "" (empty string) token, but [].pop() returns undefined, not null, if the list is empty and I didn't think to try deleting an empty input.

Fix the logic so we don't end up in a loop if the input is empty.

Test Plan
  • In any browser, deleted all tokens in a tokenizer; then pressed delete again.
  • Before: tab hangs in an infinte loop.
  • After: smooth sailing.

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Javascript is !!fun!!.

This revision is now accepted and ready to land.Jun 1 2018, 8:27 PM
This revision was automatically updated to reflect the committed changes.