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[PR #2094] feat(javascript): fold constant values and recover Electron boundaries through wrappers #5023
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opened 2026-10-31 00:58:33 +00:00 by bsakaguchi
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📋 Pull Request Information
Original PR: https://github.com/morluto/rea/pull/2094
Author: @coleleavitt
Created: 10/12/2026
Status: 🔄 Open
Base:
main← Head:pr/javascript-constant-folding-electron-ipc📝 Commits (10+)
83a2950fix(javascript): calibrate parent result retention from measured expansion6798412feat(javascript)!: bound semantic facts by serialized Evidence bytes780465cfix(javascript): bound getter expansion through unknown receiver keys20266cbtest(javascript): exceed the calibrated application forecast at the MCP boundary670685cfeat(analysis-view): page JavaScript semantic coverage and unknown frontiers428ef76feat(javascript): fold primitive operators, join, and fromCharCodeaadf79dfeat(javascript): report folded constants in Electron, IPC, and endpoint findings2375e53feat(javascript): fold semantic request endpoints and configuration defaults2cf4d02feat(javascript): report URL, host, and path values present in data4caa76adocs(javascript): describe folded values and data endpoints📊 Changes
124 files changed (+10827 additions, -1362 deletions)
View changed files
📝
docs/javascript-application-graph.md(+2 -1)📝
docs/javascript-artifact-reconstruction.md(+182 -15)📝
src/application/javascript/ElectronBoundaryAnalysis.ts(+209 -18)📝
src/application/javascript/ElectronBoundaryGraph.ts(+2 -0)📝
src/application/javascript/ElectronBoundaryGraphCallPaths.ts(+35 -12)📝
src/application/javascript/ElectronBoundaryGraphContext.ts(+75 -1)📝
src/application/javascript/ElectronBoundaryGraphIpc.ts(+62 -17)📝
src/application/javascript/ElectronBoundaryGraphNative.ts(+22 -6)➕
src/application/javascript/ElectronBoundaryGraphPolicies.ts(+88 -0)📝
src/application/javascript/ElectronBoundaryGraphWindows.ts(+115 -22)➕
src/application/javascript/ElectronNativeAddonResolution.test.ts(+52 -0)📝
src/application/javascript/JavaScriptApplicationEvidenceGraph.ts(+6 -6)📝
src/application/javascript/JavaScriptArtifactAnalysis.ts(+102 -22)📝
src/application/javascript/JavaScriptArtifactAnalysisTypes.ts(+8 -0)📝
src/application/javascript/JavaScriptArtifactGraphBuilder.ts(+2 -6)📝
src/application/javascript/JavaScriptArtifactGraphContext.ts(+3 -1)➕
src/application/javascript/JavaScriptArtifactGraphEndpoints.ts(+96 -0)📝
src/application/javascript/JavaScriptArtifactGraphFindings.ts(+5 -50)📝
src/application/javascript/JavaScriptArtifactReconstruction.ts(+2 -1)➕
src/application/javascript/JavaScriptSemanticFileGraphBudget.ts(+115 -0)...and 80 more files
📄 Description
Depends on https://github.com/morluto/rea/pull/2092 — this branch is based on it, so its first five commits are that PR's; review the commits listed below.
Branch:
pr/javascript-constant-folding-electron-ipcBase:
pr/javascript-semantic-budget(depends on it; see below). Merge that PR first.Commits (on top of
pr/javascript-semantic-budget):428ef76f6feat(javascript): fold primitive operators, join, and fromCharCodeaadf79d66feat(javascript): report folded constants in Electron, IPC, and endpoint findings2375e53a4feat(javascript): fold semantic request endpoints and configuration defaults2cf4d0250feat(javascript): report URL, host, and path values present in data4caa76a6edocs(javascript): describe folded values and data endpoints6c2c5f7b6fix(javascript): report files whose static values stay literal-onlyb300f75d3feat(electron): infer Electron APIs passed through one wrapper parameter0ab2a6b43feat(electron): enumerate contextBridge APIs bound to object literalsa352d0415feat(electron): report WebContentsView/BrowserView and will-attach-webview hardening315e06344feat(electron): infer Electron APIs from local fallback alternatives26b69f1d9feat(electron): resolve native add-ons loaded through createRequire, bindings, node-gyp-build and process.dlopen12df9c6aafeat(electron): report Content-Security-Policy declarations and broad sourcesb60f2d80bfix(electron): follow createRequire aliases used as parameter defaults79dd864aerefactor(javascript): give the constant lattice one leaf-parameterized operator folder8eed2c4c9feat(javascript): fold wrapped Electron values with the shared operator folder2c6bef645feat(javascript): recover generated IPC channels across wrapper chains and linked sourcesProblem
REA's static Electron model misses most of what a minified, wrapper-heavy Electron
app exposes. REA_REPORT.md §2 lists the gaps found by manual reading of Grok Bot 0.68.1
(REA 6.3.0), and they persist on current
origin/mainb3dec005b:!0/!1options were reported asdynamic;channels and endpoints built with
+, templates,joinorString.fromCharCodestayed unresolved.
new t({…})wheretisBrowserWindowpassed to a wrapper(
main-app.cjs:369:807). The whole app RPC layer (dune-rpc:${edge}:m:${method})registers handlers through
ipcMainpassed as a parameter, with template channels.contextBridge.exposeInMainWorld("desktop", lp)withlpbound to an objectliteral reported
members: [].WebContentsView/BrowserView, nowill-attach-webviewhardening, no CSP.createRequire,bindingsornode-gyp-buildwerenot resolved.
reported; the endpoint model only saw call sites.
What changed
void,typeof,!,~, arithmetic, comparison, shift andbitwise operators over exact primitives, templates,
Array.prototype.joinandString.fromCharCodefold through one leaf-parameterized operator folder(
foldSemanticOperands) shared by static values and wrapper substitution. OnlyJSON-representable results become values. Folded values report
status: "derived"with the source expression; IPC pairing treats derived channels as exact
(
unique-exact-derived-channel). A file whose member-write recovery exceeds aresource limit keeps literal-only values and says so in
limitations.template text, folded expressions) are reported as
endpoint_kind: "data"withurl_class,hostandproperty_path. Host-only values must be lowercase DNS namesunder a two-letter IANA ccTLD or a common gTLD.
parameter key) resolves when every same-file call site passes the same proven
Electron export (
basis: "wrapper-parameter"); a local??/||/&&/conditional/object-literal binding resolves when its proving branches agree
(
basis: "local-alternatives"). Relationships that depend on an inferred identityare inferences with medium/low confidence.
(
api_status: "object-binding",conditional_membersfor known conditional spreads).BrowserView/WebContentsViewconstructions, andwill-attach-webviewwrites anddeletions on
webPreferences/paramsplus the last static preload path.module.createRequirefunctions,bindings,node-gyp-buildandprocess.dlopen, directly, through one alias, or through a parameter default.<meta http-equiv>, header properties/assignments,[...].joindirective lists and string/template literals, with per-directiveconcerns. Runtime parts stay
${…}and are not judged.callers through up to eight wrapper levels, iterates exact arrays in
for…of,links a unique
globalThis[Symbol.for(key)]publication in another source of theartifact, and reports operations reached only under unresolved predicates with
guard_alternatives(counted asguarded_renderer_transmissions, no pairing edge).compositeKey(no NUL-joined keys).Why it depends on
pr/javascript-semantic-budgetBoth change the worker protocol and schemas (
JavaScriptAnalysisWorker*.ts),JavaScriptArtifactAnalysis.tsand the semantic projection signature(
projectJavaScriptSemanticFileSteps(file, ir, graphByteBudget, nodeBudget, callPaths)).Splitting them would need a second, conflicting version of those files.
Breaking changes
None intended. Output additions only: new optional/added fields (
electron_identity,resolution_basis,guard_alternatives,linked_operation,url_class,host,property_path,web_contents_views,webview_attachments,content_security_policies, loader fields on native bindings) and summary counters.One behaviour change consumers may notice: values that were reported as
dynamic(for example
!0,"a" + "b") are nowderived, with the value and the sourceexpression.
Verification
On this branch (A + this PR), tree identical to the integration branch minus the
jsbeautify PR:
npm run check— pass.npm run test:changed -- --base origin/main— 109 files, 2005 passed, 3 skipped.npm run test:focusedon 60 javascript/electron boundary and acceptance files —453 tests passed.
npx tsc --noEmitpasses on every commit.app.asar, default heap (3:14 wall, 1.33 GB peak RSS,579/579 parsed).
summarycompared withorigin/mainb3dec005b:main281/281,desktop-mount10/10,sand-dev10/10,box-vnc2/2, plus theprobes (REA 6.3.0 and origin/main: 0). 278/281 renderer main-edge invokes are
recovered as guarded (behind the
sand:main-edge-servedgate), 20 desktop-mountinvokes pair.
main-app.cjs:369:806,basis: wrapper-parameter),a dialog parent window found through local alternatives, and the avatar
WebContentsView(main-app.cjs:386:27105) are reported;will-attach-webviewis reported with its forced
nodeIntegration/contextIsolation/sandboxandpreload writes.
desktopbridge objectlpnow lists its members (381 members over 7bridge APIs, vs 95 on origin/main).
api.x.ai,api.x.com,mcp.money.x.com,connectors-gateway.grok.com,downloads.cursor.com,prod.authentication.cursor.sh,api2.cursor.sh,grok.com,cursor.com) are reported; origin/main and the budget PR alonereport 0 of them.
index.htmland panelpanel.htmlmetapolicies from §2.7 with their
img-src https:/connect-src ws:/style-src 'unsafe-inline'concerns.Limitations
reachability and guard outcomes are not proven; inferred identities are marked
as inferences.
for identity, eight for channel substitution.
String.fromCharCodeandArray.prototype.join.TLD can still match.
!0/!1fix is delivered by the constant lattice(
status: "derived", expression!0), not by a literal special case.🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.