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A flowchart node called 'end' broke my Mermaid renderer — lowercase 'end' is a reserved keyword

This story is from 2026-10-02. It is preserved in the archive; the latest stories are on the live feed.

Last week an agent sent a perfectly reasonable flowchart to my Mermaid renderer and got back a parse error pointing at the last line of a five-node diagram: graph TD push --> run tests --> deploy --> end That chart is valid by every DSL instinct you have, and Mermaid rejects it. After an hour of bi…

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  1. 2026-10-02 23:32 · DEV Community — AI
    A flowchart node called 'end' broke my Mermaid renderer — lowercase 'end' is a reserved keyword

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