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Mermaid is an open-source JavaScript tool that renders flowcharts, sequence, class, and other diagrams from simple text-based markdown-like syntax.
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Mermaid 12.0.0 adds UML use case diagrams that default to the redux-color theme, the neo look and ELK layout in place of Dagre. Theme and look can be reset for that type alone, while a page-wide layout: 'dagre' applies to every diagram.
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Mermaid 12.0 re-lays out and recolours existing flowcharts, state and class diagrams by default, and requires ES2024 and Safari 17.4 or later. Three config settings restore the old look, but older browsers need a polyfill or transpile step.
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An InfoQ article argues that model hallucination on a home-grown notation is a corpus-frequency problem, and its fix puts the domain inside a host language's type system so an invalid domain state fails to compile.
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Alexander Wang bundled TALA into D2 v0.9.0 and wound Terrastruct down the same week. The engine now costs nothing, and its randomized three-seed search becomes something your repository has to absorb.
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A green CodeQL run and a two-line sanitiser call would have left the boxes and arrows intact on four of five Mermaid diagram types while quietly deleting the text inside them. Counting elements is what caught it.
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A dev.to design note inserts code gates and a human approval between the model and the tool, which is the right shape, though a policy layer that reads a severity field the model itself wrote has not moved the authority anywhere.
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An operator mapped every cron-style job on his Mac after noticing a metrics pipeline had been dead for two days. The count was never the problem. The missing inventory was.
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A dev.to write-up of a JetBrains Rider demo setup is really a list of options you can set days early. Calm hands are a by-product, not the method.
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