feat: ESM loader overhaul — Web/Node parity, ns:module dev surface, HTTP module loader - #1965

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NathanWalker wants to merge 36 commits into

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feat/hmr-dev-sessions

Commits on Aug 19, 2026

feat(runtime): ESM resolver hardening and async module-graph loader

NathanWalker
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edusperoni
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0e3513d
feat(runtime): HMR dev-sessions and a hardened HTTP session loader

NathanWalker
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edusperoni
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5b080c4
feat(runtime): expose the dev-loader surface as the ns:module builtin

NathanWalker
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edusperoni
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d7b20a5
fix(worker): surface entry-script load errors and buffer early messages

NathanWalker
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edusperoni
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b19dbe8
test: cover the ESM loader, remote-module security, and worker behavior

NathanWalker
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edusperoni
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d5d180c
refactor(runtime): drop the require() optional-module placeholder

NathanWalker
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edusperoni
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8faf670
refactor(runtime): rename HMRSupport to HttpLoader and fold DevFlags into ns:runtime

NathanWalker
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edusperoni
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b6d3bac
fix(runtime): harden HTTP fetch, extend names, and worker drain retries

NathanWalker
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edusperoni
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4e58028
ci: build

NathanWalker
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edusperoni
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5fa23eb
refactor(runtime): move per-isolate loader state onto RuntimeState slots
edusperoni
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593dc7f
test: add an in-app HTTP module fixture server
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781816a
perf(runtime): resolve module referrers through an identity-hash index
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f125072
feat(runtime): category-scoped debug logging behind NS_DEBUG
edusperoni
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76321ed
refactor(runtime): make the ESM resolver compile-and-register only
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1bf9852
feat(runtime): scheme-agnostic module graph discovery
edusperoni
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2d7f3fe
feat(runtime): one response classifier and a web-strict MIME gate for module fetches
edusperoni
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d56e86f
fix(runtime): clear dynamic-import routing state before settling waiters
edusperoni
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13a6dc9
feat(runtime): extract module evaluation policies; require(esm) refuses async graphs
edusperoni
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9fb3559
feat(runtime): Node-parity exports interop for require(esm)
edusperoni
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b0d537a
feat(runtime): createRequire and createPumpingRequire on ns:module, node: shims
edusperoni
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062e9be
feat(runtime): import-map scopes, validation, and atomic installation
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3cccda2
refactor(runtime): workers copy the loader vocabulary at spawn
edusperoni
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9771032
refactor(runtime): drop hardcoded client vocabulary from the loader
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73ebaab
refactor(runtime): derive boot state natively; setDevBootComplete removed
edusperoni
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332c28c
fix(worker): enable the message queue on entry settle, like the web
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fd8ceec
feat(runtime): ES module app entries and a boot backstop that holds for them
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bfd1682
fix(runtime): fail cleanly on an unreadable ES module entry
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52fdeef
test: port the loader suite - HTTP ESM, createRequire, interop, workers
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55ca718
docs: sync ns-builtin-modules.md with the loader overhaul
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e3ab969
refactor(runtime): reserve the g_ prefix for actual process globals
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6711447
fix(runtime): loader input validation, worker entry resolution, review findings
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006de1a
docs: sync ns-builtin-modules with the iOS module-reference rewrite
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95c8bae
fix(runtime): never poll the looper from inside one of its fd callbacks
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da6cf99
perf(runtime): wait on the event loop's fds instead of sleeping in pumps
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c167db4

Commits on Aug 20, 2026