Parse once.
Transform in isolation.

ProjectSession now owns one canonical source tree and export summary per unchanged module. Every importer still receives a fresh mutable AST, keeping compiler work bounded without sharing transformer state.

See the cache boundary Measurements

103Unique modules parsed once

200Independent transformer clones

193/193Tests passing

MODULE OWNERSHIP

Share immutable facts.
Never share mutation.

PARSE

Unique modules define the work

Reachability, styles, static collections, Zustand, client helpers, diagnostics, and Workers reuse one canonical parsed tree.

EXPORTS

Supported shapes summarize once

Direct, default, aliased, and named re-export records retain the existing compiler boundary without widening accepted syntax.

CLONES

Transformer contexts stay private

Normalization receives a deep clone of every node with independent parents, so one importer cannot mutate another's analysis.

INVALIDATION

Source text owns freshness

A changed file replaces its parsed tree and export summary together. A different ProjectSession starts with no shared records.

MEASURED

Output stays identical

The 100-importer A/B emits the same 382,603-byte source-result graph. No material timing claim is made from the drifting host run.

Stable semantic identity

P0.8 moves declarations, aliases, re-exports, ownership sites, and call sites onto ModuleSymbol and SiteId records.

UPGRADE

Keep the output. Bound repeated compiler work.

$npm install @kudzujs/core@^0.8.34

Parse once.Transform in isolation.

Share immutable facts.Never share mutation.