feat: add block and blockAsync template helpers - #367
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Add override-able named blocks for layouts. Child templates define block overrides via block(name, fn), layouts define slots with optional defaults. Built on top of the capture/captureAsync primitives. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #367 +/- ##
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+ Coverage 91.46% 92.15% +0.68%
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Files 11 11
Lines 293 293
Branches 78 78
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+ Hits 268 270 +2
Misses 9 9
+ Partials 16 14 -2 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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This was referenced Apr 25, 2026
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Summary
block(name, fn?)andblockAsync(name, fn?)helpers for Nunjucks/Blade-style named blocks in layoutscapture/captureAsyncprimitives from feat: add capture and captureAsync template helpers #365 — no new parsing logicUsage
Child template:
Layout template:
If the child defines a block, it overrides the layout default. If not, the default runs. If neither provides content, the block renders as an empty string.
Changes
src/compile-string.ts— addblocks: {}to__eta, injectblock/blockAsyncfunctions, pass__blocksto layout render calltest/compile-string.spec.ts— update 4 compiled output snapshotstest/render.spec.ts— add 7 tests (override, default, empty, multiple blocks, data access, no body leakage, async)Test plan
Closes #245
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