dofs: Add bounded filesystem primitives - #79
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August 7, 2026 15:20
Return file size and modification time from readdir, and apply limit and offset after pending write buffers are merged into stable name order.
Add readRange to WorkspaceFilesystem so callers can read a byte window without materializing or transferring the whole file.
Teach find that a question mark matches one non-separator character so its glob surface covers the pattern documented by the AI find tool.
Keep literal, case-sensitive defaults while adding regular expressions, explicit case handling, numbered context, and limit and offset controls for tool callers.
Keep the new pagination tests compliant with the repository-wide Biome import ordering check.
Record the directory, range-read, glob, and grep additions with the storage package that introduces them.
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Stack 1 of 7. Base:
main. Head:stack/improve-tools-01-dofs-primitives.The storage filesystem could not page directories after merging pending writes, expose bounded byte reads through its main facade, match single-character globs, or bound search results. Tool callers therefore had to transfer too much data or implement behavior outside the authoritative storage layer.
This change adds stable name-ordered directory pages with size and modification time, including entries held in write buffers. It exposes byte-range reads on
WorkspaceFilesystem, adds?glob matching, and extendsgrepwith fixed-string and regular-expression modes, explicit case handling, context lines, limits, and offsets. Existinggrepcallers retain literal, case-sensitive defaults.Verification
npm test --workspace @cloudflare/dofs npm run typecheck --workspace @cloudflare/dofs npm run build --workspace @cloudflare/dofsThe next stack part carries these bounded primitives through the Computer facade and AI tool adapters.