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docs(core): fix ComponentRegistry singleton example in README - #5268

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claude/issue-5258-core-readme-registry-singleton
Aug 18, 2026
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docs(core): fix ComponentRegistry singleton example in README#5268
os-support-ai merged 1 commit into
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claude/issue-5258-core-readme-registry-singleton

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Fixes#5258

What

packages/core/README.md's Component Registry example taught new ComponentRegistry(), but ComponentRegistry is an exported singleton instance, not a class. Built packages/core/dist/registry/Registry.d.ts declares:

exportdeclareconstComponentRegistry: Registry<any>;

The #5138 doc-snippet type gate (scripts/check-doc-snippet-types.mjs) measured this as TS2351: This expression is not constructable. The README ships to npm inside the package's files, so a reader who copied the snippet got a compile error.

Verified against the builtpackages/core/dist/index.d.ts before editing: ComponentRegistry is a const instance and Registry is separately exported as a real class (export declare class Registry< T = any >) — the premise held.

Fix

Dropped the new, call register/get directly on the singleton, and added one line stating it is the process-level shared instance (the part a reader cannot infer from the example) — copied verbatim from the wording packages/components/README.md was given in #5160, so both READMEs stay consistent:

import{ComponentRegistry}from'@object-ui/core'ComponentRegistry.register('button',buttonMetadata)constmetadata=ComponentRegistry.get('button')

UNGATED_DOCS ledger — please read before reviewing the diff

packages/core/README.md has a live entry in scripts/check-doc-snippet-types.mjs's UNGATED_DOCS. Before this change it read:

'5 undefined-name diagnostic(s) — blocks continue an earlier block, or use ambient names the page never defines; plus TS2339x2 TS2351x1 — candidate real defects, un-triaged'

Measured by temporarily un-gating the file and running the gate against the built types, the diagnostics were exactly: TS2351 at line 49 (this card), five TS2304 undefined-name diagnostics, and TS2339x2 at lines 116/121.

This PR fixes only the TS2351. The ledger entry is intentionally NOT deleted — the TS2339x2 pair is a separate, pre-existing defect on the same document and the same ledger line, tracked as out of scope: #5257 (not fixed here, not dispatched at the time this PR was opened). Re-measured after the fix, the entry now reads:

'5 undefined-name diagnostic(s) — blocks continue an earlier block, or use ambient names the page never defines; plus TS2339x2 — candidate real defects, un-triaged'

Only TS2351x1 is dropped from the reason text. A reviewer should read the surviving TS2339x2 clause as expected, not as an incomplete fix on this card — the document is genuinely still ungated because #5257's defects remain, out of scope: #5257.

Verification

Built @object-ui/core's dependency closure plus every package the currently-covered doc snippets import (node scripts/check-doc-snippet-types.mjs --build-filter), then:

  • node scripts/check-doc-snippet-types.mjs — passes (exit 0); "Every covered documentation snippet compiles against the built types."
  • Before/after measurement (ledger entry temporarily removed, not committed that way) confirms TS2351 at packages/core/README.md:49 is gone and only the five TS2304 + TS2339x2 (out of scope, core: cloneAsOverride keeps its input's deep-readonly type, so a Tenant/User override clone does not type-check as mutable #5257) remain.
  • node scripts/check-control-bytes.mjs — passes
  • node scripts/check-doc-links.mjs — passes ("Links are valid across 13 scan roots.")
  • node scripts/check-changeset-presence.mjs — passes
  • node scripts/check-changeset-fixed.mjs — passes
  • node scripts/check-changeset-no-major.mjs — passes
  • node scripts/check-doc-component-types.mjs — passes (unaffected, run for completeness)

Diff is surgically narrow — one README snippet + one ledger reason-text line — so #5257 can land on this same file/ledger entry afterward without conflict.

Changeset: @object-ui/core patch (README correction; packages/core is a released package and its README ships in files).

Hard limits observed

No edits to docs/adr/**, .claude/**, skills/**, AGENTS.md, or CLAUDE.md.


Generated by Claude Code

packages/core/README.md's Component Registry snippet taught
`new ComponentRegistry()`, but ComponentRegistry is an exported singleton
instance, not a class -- packages/core/dist/registry/Registry.d.ts declares
`export declare const ComponentRegistry: Registry<any>`. The #5138 doc-snippet
type gate measures this as TS2351: This expression is not constructable.
README ships to npm inside the package's `files`, so a reader who copied the
snippet got a compile error.
Drops the `new`, calls ComponentRegistry.register/get directly on the
singleton, and adds one line stating it is the process-level shared instance
SchemaRenderer resolves every `type` against -- the same wording
packages/components/README.md was given in #5160, kept consistent across
both READMEs.
Updates the UNGATED_DOCS ledger entry for packages/core/README.md in
scripts/check-doc-snippet-types.mjs: TS2351x1 is dropped from the reason
text now that the diagnostic is gone (measured before/after against the
built dist/*.d.ts). The entry is not deleted -- the document's remaining
TS2339x2 pair is a separate, pre-existing defect out of scope here, tracked
as #5257.
Fixes#5258
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RV6yuVCxymHYE16PL9vQkE
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✅ Console Performance Budget

MetricValueBudget
Main entry (gzip)25.3 KB350 KB
Entry fileindex-DGBVb25P.js
StatusPASS

📦 Bundle Size Report

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Size Limits

  • ✅ Core packages should be < 50KB gzipped
  • ✅ Component packages should be < 100KB gzipped
  • ⚠️ Plugin packages should be < 150KB gzipped

@os-support-ai
os-support-ai marked this pull request as ready for review August 18, 2026 23:27
@os-support-ai
os-support-ai added this pull request to the merge queueAug 18, 2026
Merged via the queue into main with commit 41f498bAug 18, 2026
22 checks passed
@os-support-ai
os-support-ai deleted the claude/issue-5258-core-readme-registry-singleton branch August 18, 2026 23:28
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docs: packages/core/README.md teaches new ComponentRegistry(), but ComponentRegistry is an exported singleton instance, not a class

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