perf(field): read inline FIELD values with cachedRead

[chhoumann]

{{FIELD:<name>|inline:true}} no longer rereads every note from disk on each run. In a 20,000-note vault a run went from 8-9 s every time to 4.3 s once after startup, then about 80 ms.

Cause

collectFieldValuesManually read each note with app.vault.read, which always goes to disk. The FIELD suggestion cache is cleared by every metadataCache changed event, which any note edit fires, so in practice almost every run read the whole vault again. quickAddApi.fieldSuggestions.getFieldValues with includeInline: true did the same, one note at a time.

Change

Both read with app.vault.cachedRead. Obsidian serves a note it already holds from memory and keeps that copy current when the note changes, so only the first run after startup goes to disk. The values are only offered as suggestions, which is the use cachedRead is meant for.

Measured

Obsidian 1.13.7, isolated vault with 20,151 notes. A Capture with format {{FIELD:type|inline:true}}, run three times after a fresh Obsidian start, each run after a metadataCache changed event (what editing any note does). Time until the prompt is painted:

	Run 1	Run 2	Run 3
master	8.4 s	7.4 s	8.1 s
This branch	4.3 s	86 ms	79 ms

Both list the same 37 values.

Tests

• The existing inline-field tests (FieldValueCollector.issue671.test.ts, quickAddApi.fieldSuggestions.test.ts, quickAddApi.test.ts, quickAddApi.audit-api-prompts.test.ts) now stub cachedRead, including the unreadable-file case and the check that includeInline: false reads nothing.
• pnpm run build-with-lint, pnpm run test (6599 passed), .agents/run-e2e (395 passed, 24 Templater-only skipped).

Release / migration

None. Pre-existing (2.29.0 takes 9.3 s too), not a 2.30.0 regression.

Fixes #2109

Note

Read inline FIELD values via vault cachedRead

Inline field collection in collectFieldValuesManually and the field-suggestions API handler now gets file content through the vault cached-read method instead of a direct read, in FieldValueCollector.ts and fieldSuggestionsApi.ts. Parsing and unreadable-file error handling stay the same. Test fixtures across the quickAddApi and FieldValueCollector tests are updated to mock the cached-read operation.

^{Macroscope summarized 2d0e3f0.}

Summary by CodeRabbit

• Bug Fixes
  • Inline field suggestions and manually collected field values now use cached file content, while files that cannot be read continue to be skipped.

[chatgpt-codex-connector]

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-01T10:43:36.431258Z	2d0e3f0	Draft marked ready

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📝 Walkthrough

Walkthrough

Inline field collection and field suggestions now read note content with Obsidian’s cachedRead method. Related test fixtures use cachedRead instead of read.

Changes

Inline field reads

Layer / File(s)	Summary
Field suggestions API reads src/api/fieldSuggestionsApi.ts, src/quickAddApi.fieldSuggestions.test.ts, src/quickAddApi.test.ts, src/quickAddApi.audit-api-prompts.test.ts	The field suggestions API uses cachedRead to extract inline fields. Related test fixtures provide content through cachedRead.
Manual inline field collection src/utils/FieldValueCollector.ts, src/utils/FieldValueCollector.issue671.test.ts	Manual inline field collection uses cachedRead before parsing file content. Its test mock uses cachedRead.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~8 minutes

Change: Bug fix · Severity of issue fixed: Medium

Merge Risk: 🔵 Low · up to 2d0e3

A note edit can briefly leave field suggestions or manual collection based on the previous inline value. This is a bounded correctness issue; preserve fresh reads in both paths.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 5 functions across 6 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the primary change: using cachedRead to improve inline FIELD value collection performance.
Linked Issues check	✅ Passed	Issue #2109 requires cached content reads for inline FIELD collection and for fieldSuggestions.getFieldValues({ includeInline: true }). The PR changes FieldValueCollector.ts and `fieldSuggestionsA…
Out of Scope Changes check	✅ Passed	The changes are limited to the two read paths required by issue #2109 and to their test fixtures. The test updates support the implementation. No unrelated behavior or files are identified.

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_{A rabbit reads a note in the cache,
And gathers field values in a flash.
The tests now follow that same way,
With cached reads in fixtures today.
The rabbit hops, content in tow.}

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Actionable comments posted: 1

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Inline comments:
Review comments at @src/api/fieldSuggestionsApi.ts:
- Line 67: Update the inline-field scan read in the field suggestions flow and
the corresponding manual-collection flow to use app.vault.read instead of
app.vault.cachedRead, so both parse fresh file content.

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Run ID: 18eebc03-5cef-4215-958c-a846397b79b1

📥 Commits

Reviewing files that changed from the base of the PR and between fcb315d and 2d0e3f0.

📒 Files selected for processing (6)

• src/api/fieldSuggestionsApi.ts
• src/quickAddApi.audit-api-prompts.test.ts
• src/quickAddApi.fieldSuggestions.test.ts
• src/quickAddApi.test.ts
• src/utils/FieldValueCollector.issue671.test.ts
• src/utils/FieldValueCollector.ts

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