Module Reference

41 modules organized by category. All modules are zero-dependency, standalone JavaScript files.

Parsers

Module	File	Description
CSV Parser	src/parsers/csv.js	RFC 4180 compliant CSV/TSV parser. Streaming for >100MB files. BOM handling, auto-delimiter detection.
JSON Parser	src/parsers/json.js	Nested object flattening with dot notation. Trailing comma recovery. Error recovery for malformed input.
XLSX Parser	src/parsers/xlsx.js	Excel OOXML SpreadsheetML reader. Shared strings, multi-sheet, date serial numbers, cell format handling.
ZIP Parser	src/parsers/zip.js	Zero-dependency zip reader using browser DecompressionStream API. Extracts and routes files to appropriate parsers.

Transforms

Module	File	Description
DataFrame	src/transforms/data-model.js	Core data model. Column/row operations, filter, sort, dedupe, toObjects. Headers + rows array structure.
Pipeline	src/transforms/pipeline.js	Undo/redo transform history. 50-state maximum. Chainable operations with state snapshots.
SQL Engine	src/transforms/sql.js	SQL SELECT parser and executor against DataFrames. Supports JOINs, GROUP BY, ORDER BY, LIMIT, UNPIVOT, FILL_DOWN, window functions.
SQL Functions	src/transforms/sql-functions.js	61+ built-in SQL functions: string (17), date (10), math (8), type/null (6), conditional (1), advanced string (3).
Pivot Engine	src/transforms/pivot.js	groupBy, aggregate, and pivot operations. 9 aggregation functions: count, sum, avg, min, max, first, last, countDistinct, list.
Redaction	src/transforms/redact.js	Column-level data masking: blank, replace, mask (partial), hash (djb2). For sanitizing sensitive data before export.
PII Scanner	src/transforms/pii-scanner.js	Two-pass PII detection. Fast regex gate then validation (Luhn for credit cards, format check for SSNs). Pattern definitions in pii-patterns.json.

Export

Module	File	Description
Export	src/export/export.js	CSV and JSON export. Clipboard copy as TSV. File download via Blob URL. Configurable delimiters and formatting.
XLSX Writer	src/export/xlsx-writer.js	Zero-dependency XLSX generator. Builds OOXML ZIP archives with shared strings, styles, CRC32 checksums. STORE compression.

UI

Module	File	Description
App Shell	src/ui/app-shell.js	Full-page application shell. Tab navigation, file management, onboarding flow, Synthwave 84 theme, menu system. Detects bookmarklet vs standalone mode.
Table Renderer	src/ui/table.js	Virtual-scrolling table for 1M+ rows. Column sort (asc/desc/none), row selection, Shift+click range, TSV copy, null display.
REPL	src/ui/repl.js	Chrome DevTools-style console. Command history (up/down arrows), JSON tree expansion, multi-line input (Shift+Enter). Executes JS and SQL.
Notebook	src/ui/notebook.js	Multi-cell notebook with JS, SQL, and Markdown cell types. Drag-reorder cells. Stale detection (warns when upstream cells change).
File Import	src/ui/file-import.js	Drag-and-drop zone with auto format detection. Supports CSV, JSON, XLSX, TSV, ZIP. File picker fallback. Paste support.
Pivot Panel	src/ui/pivot-panel.js	Interactive pivot table controls. Select groupBy columns, aggregation functions, and pivot columns.
Command Palette	src/ui/command-palette.js	Ctrl+P fuzzy-search action launcher. Subsequence matching algorithm. Keyboard navigation (up/down/enter).
Build Config	src/ui/build-config.js	Interactive module selector. Size estimates per module. Tier calculator (minimal vs full). Generates custom build configurations.
Debug Panel	src/ui/debug-panel.js	Unified debug tab integrating Network, Console, Storage, and DOM inspector views.
Panel System	src/ui/panel.js	Draggable, resizable floating panel for bookmarklet injection mode. Handles positioning, z-index, minimize/close.
Help / Settings	(in app-shell.js)	F1 help modal. localStorage-backed user preferences. Theme toggle.

Inspect

Module	File	Description
DOM Scraper	src/inspect/dom-scraper.js	Click-to-select HTML table extraction. Highlights tables on hover. Converts <table> elements to DataFrames. Generates CSS selectors.
Network Interceptor	src/inspect/network-interceptor.js	Monkey-patches XMLHttpRequest and fetch. Captures method, URL, status, response body, size, timing. 500-entry rolling log.
Storage Viewer	src/inspect/storage-viewer.js	Reads cookies (document.cookie), localStorage, and sessionStorage. Outputs as key-value DataFrames. Handles SecurityError gracefully.
Console Capture	src/inspect/console-capture.js	Intercepts console.log/warn/error/info. Stringifies arguments (JSON for objects, stack traces for Errors). Forwards to original console.
Page Explorer	src/inspect/page-explorer.js	Mini DevTools: enumerates non-standard window globals, DOM structure summary, performance timing, event listeners, meta tags.

Scanner

Module	File	Description
Preflight Scanner	src/scanner/preflight-scanner.js	File sanitization checks: base64 blobs, embedded script tags, binary byte sequences, formula injection (=, +, -, @), Shannon entropy analysis, PII gate. Generates a pass/fail manifest.

SharePoint

Module	File	Description
SP Auth	src/sharepoint/sp-auth.js	Digest-based authentication via _api/contextinfo. spFetch wrapper for authenticated requests.
SP Compat	src/sharepoint/sp-compat.js	SharePoint version detection (2013/2016/2019/SPO). Feature matrix per version.
SP Errors	src/sharepoint/sp-errors.js	Error response parsing. Exponential backoff for throttled requests (429). Digest refresh on 403.
SP List Browser	src/sharepoint/sp-list-browser.js	Enumerate lists and libraries. View item count and schema. 5,000-item threshold handling with indexed column filtering.
SP List Export	src/sharepoint/sp-list-export.js	Paginated list export. OData $select, $filter, $orderby support. Handles large lists via $skiptoken.
SP List Import	src/sharepoint/sp-list-import.js	CSV to SharePoint list. Column mapping UI. Entity type resolution. Batch POST with digest auth.
SP Doc Browser	src/sharepoint/sp-doc-browser.js	Document library navigation. Folder tree traversal. File preview and download.
SP File Upload	src/sharepoint/sp-file-upload.js	Chunked upload (10MB chunks). Large file support up to 250MB threshold. Special character handling in filenames.
SP SPFx	src/sharepoint/sp-spfx.js	SPFx web part manifest generation. Component packaging guide for .sppkg deployment.
SP ASPX	src/sharepoint/sp-aspx.js	Application page template for SP 2013+ farm deployments via _layouts path.

Utility

Module	File	Description
Type Detection	src/util/detect-types.js	Auto-detect column types by sampling values. Recognizes: date (15 patterns), boolean, numeric, null/empty. Used by import and SQL.
Audit Log	src/util/audit-log.js	Append-only JSON Lines audit trail. NIST 800-53 AU family alignment. SHA-256 fingerprinting (FNV-1a fallback). Tracks imports, exports, queries, transforms, redactions. 10,000-entry max.