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[HDX-5078] Formula expression model: schema + parser/validator #2872

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Merged
kodiakhq merged 3 commits into from
Aug 13, 2026
Merged

[HDX-5078] Formula expression model: schema + parser/validator #2872

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28366fc
feat: add metric formula expression model — schema + parser/validator…
wrn14897 Aug 12, 2026
6d6f7ef
fix: bound formula expression length and nesting depth (HDX-5078)
wrn14897 Aug 12, 2026
22fa521
Merge branch 'main' into warren/HDX-5078-formula-schema-parser
kodiakhq[bot] Aug 13, 2026
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5 changes: 5 additions & 0 deletions .changeset/metric-formula-expression-model.md
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'@hyperdx/common-utils': minor
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Add the metric formula expression model: a `formulas` entry on chart configs (letter-based series refs — `A`, `B`, `C` map to `select` positions) plus an arithmetic-only parser/validator (`core/formula.ts`) that produces a validated AST and structured validation errors (unknown series ref, empty expression, malformed syntax, invalid tokens). Groundwork for metric formulas like `A / (A + B + C) * 100`; no query rendering or UI changes yet.
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