feat(compiler): allow declarations to be used as expressions#11019

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timotheeguerin wants to merge 12 commits into

microsoft:mainfrom

timotheeguerin:decl-expr

Commits on Jun 18, 2026

feat(compiler): allow declarations to be used as expressions
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fix(html-program-viewer): configure rendering for new expression property
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test(compiler): use expect and flatten top-level describe in decl-expr tests
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docs: add html-program-viewer changelog and clarify compiler changelog naming
timotheeguerin
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fix(compiler): don't flatten keyword-form unions used as `|` operands
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test(compiler): expand coverage for declarations as expressions
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fix(compiler): correct type names for declaration expressions
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Commits on Jun 19, 2026

Commits on Jun 22, 2026

Merge remote-tracking branch 'upstream/main' into decl-expr
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Commits on Jun 24, 2026

refactor(compiler): use dedicated AST nodes for declaration expressions
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committed