@office-open/core

@office-open/core

Shared OOXML infrastructure: XmlComponent, value validators, unit converters, chart types, and SmartArt definitions.

Features

• XmlComponent Framework - Base classes for building OOXML element trees with dynamic namespace support
• Value Validators - Runtime validation for OOXML spec types (ST_HexColor, ST_OnOff, ST_DecimalNumber, etc.)
• Unit Converters - TWIP and EMU conversions (mm/in/pt/px)
• Chart Components - Shared chart types (bar, line, pie, area, scatter) and chart collection for DOCX/PPTX
• SmartArt Components - Data model, tree-to-model converter, collection, and built-in layout/style/color definitions
• ID Generators - Sequential numeric IDs, nanoid, SHA-1 hash, UUID v4
• OOXML Compliance - All types verified against ISO/IEC 29500-4 XSD schemas

Installation

# Install with npm
$ npm install @office-open/core

# Install with pnpm
$ pnpm add @office-open/core

Quick Start

import {
  OnOffElement,
  StringValueElement,
  BuilderElement,
  StringContainer,
  hexColorValue,
  decimalNumber,
  convertMillimetersToTwip,
  uniqueNumericIdCreator,
} from "@office-open/core";

// CT_OnOff — dynamic namespace prefix per XSD spec
new OnOffElement("w:b", false);
// → { "w:b": { _attr: { "w:val": false } } }

new OnOffElement("m:hideBot", false);
// → { "m:hideBot": { _attr: { "m:val": false } } }

// Builder with attributes + children
new BuilderElement({
  name: "w:r",
  attributes: { lang: { key: "xml:lang", value: "en-US" } },
  children: [new StringContainer("w:t", "Hello")],
});

// Value validators
hexColorValue("#FF0000"); // → "FF0000"
hexColorValue("auto"); // → "auto"
decimalNumber(10.7); // → 10

// Unit converters
convertMillimetersToTwip(25.4); // → 1440 (1 inch)
convertPixelsToEmu(100); // → 952500
convertInchesToEmu(1); // → 914400
convertPointsToEmu(12); // → 152400

// ID generators
const gen = uniqueNumericIdCreator();
gen(); // → 1, 2, 3, ...

OOXML Schema Compliance

Type	XSD Reference
ThemeColor	ST_ThemeColor (17 values)
ThemeFont	ST_Theme (8 values)
UniversalMeasure	ST_UniversalMeasure (mm, cm, in, pt, pc, pi)
Percentage	ST_Percentage
hexColorValue	ST_HexColor (auto + 3-byte hexBinary)
OnOffElement	CT_OnOff (dynamic namespace prefix)
HpsMeasureElement	CT_HpsMeasure
StringValueElement	CT_String

Exports

Path	Contents
@office-open/core	XmlComponent, validators, converters, ID generators
@office-open/core/values	Validators + ThemeColor/ThemeFont only
@office-open/core/chart	Chart types, series data, chart collection, title
@office-open/core/smartart	SmartArt data model, tree-to-model, definitions

Benchmark

Operation	hz
decimalNumber	~18M
hexColorValue (6-char hex)	~11M
uniqueNumericIdCreator	~18M
uniqueId (nanoid)	~3.0M
uniqueUuid	~1.7M
onOffObj (true)	~16M
onOffObj (false)	~3.5M
BuilderElement (attributes)	~4.9M
BuilderElement (children)	~3.6M

License

• MIT © Demo Macro