/**
 * OPC and Office Open XML package constants from the local corpus.
 *
 * Citations:
 * - Content types / relationships namespaces: ECMA-376-2 Open Packaging Conventions
 * - officeDocument transitional URI: ECMA-376-1 / MS-OI29500
 * - officeDocument strict URI: `http://purl.oclc.org/ooxml/officeDocument/relationships/officeDocument`
 *
 * Do not invent relationship types or content types here.
 */
/** OPC content types markup namespace (ECMA-376-2). */
export declare const CONTENT_TYPES_NS = "http://schemas.openxmlformats.org/package/2006/content-types";
/** OPC relationships markup namespace (ECMA-376-2). */
export declare const RELATIONSHIPS_NS = "http://schemas.openxmlformats.org/package/2006/relationships";
/**
 * Package-relationship type for the office document part (Transitional).
 * ECMA-376-1 / Office Open XML.
 */
export declare const OFFICE_DOCUMENT_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument";
/**
 * Package-relationship type for the office document part (Strict).
 * MS-OI29500 / ECMA-376 Strict.
 */
export declare const OFFICE_DOCUMENT_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/officeDocument";
/** ZIP / package path for content types. */
export declare const CONTENT_TYPES_ZIP_NAME = "[Content_Types].xml";
/** ZIP path for package-level relationships. */
export declare const PACKAGE_RELS_ZIP_NAME = "_rels/.rels";
/** OPC absolute part name for content types. */
export declare const CONTENT_TYPES_PART_NAME = "/[Content_Types].xml";
/** OPC absolute part name for package relationships. */
export declare const PACKAGE_RELS_PART_NAME = "/_rels/.rels";
/**
 * True when `type` is an officeDocument relationship (Strict or Transitional).
 */
export declare function isOfficeDocumentRelationshipType(type: string): boolean;
/**
 * SpreadsheetML main namespace (Transitional).
 * ECMA-376-1 / `sml.xsd`.
 */
export declare const SPREADSHEETML_NS_TRANSITIONAL = "http://schemas.openxmlformats.org/spreadsheetml/2006/main";
/**
 * Office document relationships markup namespace (used as `r:` on sheet/@id).
 * ECMA-376-1.
 */
export declare const OFFICE_DOCUMENT_RELATIONSHIPS_NS = "http://schemas.openxmlformats.org/officeDocument/2006/relationships";
/**
 * Workbook part content type (Transitional SpreadsheetML).
 * ECMA-376-1.
 */
export declare const WORKBOOK_CONTENT_TYPE_TRANSITIONAL = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml";
/**
 * Worksheet part content type (Transitional SpreadsheetML).
 * ECMA-376-1.
 */
export declare const WORKSHEET_CONTENT_TYPE_TRANSITIONAL = "application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml";
/**
 * Worksheet relationship type (Transitional).
 * ECMA-376-1 officeDocument relationships.
 */
export declare const WORKSHEET_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet";
/**
 * Worksheet relationship type (Strict).
 * MS-OI29500 / ECMA-376 Strict.
 */
export declare const WORKSHEET_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/worksheet";
/**
 * True when `type` is a worksheet relationship (Strict or Transitional).
 */
export declare function isWorksheetRelationshipType(type: string): boolean;
/**
 * Shared strings part content type (Transitional SpreadsheetML).
 * ECMA-376-1 §12.3.15 Shared String Table Part.
 */
export declare const SHARED_STRINGS_CONTENT_TYPE = "application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml";
/**
 * Shared strings relationship type (Transitional).
 * ECMA-376-4 §10.2.15 / officeDocument relationships.
 */
export declare const SHARED_STRINGS_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings";
/**
 * Shared strings relationship type (Strict).
 * ECMA-376-1 §12.3.15.
 */
export declare const SHARED_STRINGS_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/sharedStrings";
/**
 * Default absolute part name for the shared string table.
 * ECMA-376-1 §12.3.15.
 */
export declare const DEFAULT_SHARED_STRINGS_PART_NAME = "/xl/sharedStrings.xml";
/**
 * True when `type` is a sharedStrings relationship (Strict or Transitional).
 */
export declare function isSharedStringsRelationshipType(type: string): boolean;
/**
 * Table definition part content type (Transitional SpreadsheetML).
 * ECMA-376-1 §12.3.21 Table Definition Part.
 */
export declare const TABLE_CONTENT_TYPE = "application/vnd.openxmlformats-officedocument.spreadsheetml.table+xml";
/**
 * Table relationship type (worksheet → table part, Transitional).
 * ECMA-376-4 §10.2 officeDocument relationships.
 */
export declare const TABLE_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/table";
/**
 * Table relationship type (worksheet → table part, Strict).
 * ECMA-376-1 §12.3.21 Table Definition Part (`purl.oclc.org` form).
 */
export declare const TABLE_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/table";
/**
 * True when `type` is a table relationship (Strict or Transitional).
 */
export declare function isTableRelationshipType(type: string): boolean;
/**
 * Styles part content type (Transitional SpreadsheetML).
 * ECMA-376-1 §12.3.20 Styles Part.
 */
export declare const STYLES_CONTENT_TYPE = "application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml";
/**
 * Styles relationship type (Transitional).
 * ECMA-376-4 officeDocument relationships.
 */
export declare const STYLES_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles";
/**
 * Styles relationship type (Strict).
 * MS-OI29500 / ECMA-376 Strict.
 */
export declare const STYLES_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/styles";
/**
 * Default absolute part name for the styles part.
 * ECMA-376-1 §12.3.20.
 */
export declare const DEFAULT_STYLES_PART_NAME = "/xl/styles.xml";
/**
 * True when `type` is a styles relationship (Strict or Transitional).
 */
export declare function isStylesRelationshipType(type: string): boolean;
/**
 * Theme part relationship type (Transitional).
 * ECMA-376-4 §12.2.7 Theme Part.
 */
export declare const THEME_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/theme";
/**
 * Theme part relationship type (Strict).
 * ECMA-376-1 §14.2.7 Theme Part.
 */
export declare const THEME_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/theme";
/**
 * True when `type` is a theme relationship (Strict or Transitional).
 * Theme Override is a different part and is not accepted here.
 */
export declare function isThemeRelationshipType(type: string): boolean;
/**
 * Hyperlink relationship type (Transitional).
 * ECMA-376-4 officeDocument relationships / worksheet hyperlinks.
 * Citation: ECMA-376-1 §18.3.1.47; officeDocument `…/relationships/hyperlink`.
 */
export declare const HYPERLINK_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/hyperlink";
/**
 * Hyperlink relationship type (Strict).
 * MS-OI29500 / ECMA-376 Strict.
 */
export declare const HYPERLINK_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/hyperlink";
/**
 * True when `type` is a hyperlink relationship (Strict or Transitional).
 */
export declare function isHyperlinkRelationshipType(type: string): boolean;
/**
 * Core properties part content type (OPC).
 * ECMA-376-2 / opc-coreProperties; Override PartName `/docProps/core.xml`.
 */
export declare const CORE_PROPERTIES_CONTENT_TYPE = "application/vnd.openxmlformats-package.core-properties+xml";
/**
 * Extended (application) properties part content type.
 * ECMA-376-1 shared-documentPropertiesExtended; `/docProps/app.xml`.
 */
export declare const EXTENDED_PROPERTIES_CONTENT_TYPE = "application/vnd.openxmlformats-officedocument.extended-properties+xml";
/**
 * Custom properties part content type (opaque preserve only in M1).
 * ECMA-376-1 shared-documentPropertiesCustom.
 */
export declare const CUSTOM_PROPERTIES_CONTENT_TYPE = "application/vnd.openxmlformats-officedocument.custom-properties+xml";
/**
 * Package-relationship type for the core properties part.
 * ECMA-376-2 §9.3 / OPC metadata relationships.
 */
export declare const CORE_PROPERTIES_REL_TYPE = "http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties";
/**
 * Package-relationship type for extended properties (`app.xml`).
 * ECMA-376-1 officeDocument relationships.
 */
export declare const EXTENDED_PROPERTIES_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties";
/**
 * Extended properties relationship type (Strict).
 * MS-OI29500 / ECMA-376 Strict.
 */
export declare const EXTENDED_PROPERTIES_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/extended-properties";
/**
 * Package-relationship type for custom properties (`custom.xml`).
 * ECMA-376-1 officeDocument relationships — preserved, not authored yet.
 */
export declare const CUSTOM_PROPERTIES_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/custom-properties";
/**
 * Custom properties relationship type (Strict).
 */
export declare const CUSTOM_PROPERTIES_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/custom-properties";
/**
 * Default absolute part name for core properties.
 * ECMA-376-2 / common Office layout `docProps/core.xml`.
 */
export declare const DEFAULT_CORE_PROPERTIES_PART_NAME = "/docProps/core.xml";
/**
 * Default absolute part name for extended properties.
 * ECMA-376-1 / common Office layout `docProps/app.xml`.
 */
export declare const DEFAULT_EXTENDED_PROPERTIES_PART_NAME = "/docProps/app.xml";
/**
 * Default absolute part name for custom properties (opaque).
 */
export declare const DEFAULT_CUSTOM_PROPERTIES_PART_NAME = "/docProps/custom.xml";
/**
 * Core properties markup namespace (`cp:`).
 * ECMA-376-2 opc-coreProperties.xsd.
 */
export declare const CORE_PROPERTIES_NS = "http://schemas.openxmlformats.org/package/2006/metadata/core-properties";
/**
 * Dublin Core elements namespace (`dc:`).
 */
export declare const DUBLIN_CORE_NS = "http://purl.org/dc/elements/1.1/";
/**
 * Dublin Core terms namespace (`dcterms:`).
 */
export declare const DUBLIN_CORE_TERMS_NS = "http://purl.org/dc/terms/";
/**
 * XML Schema instance namespace (`xsi:`) — used on dcterms created/modified.
 */
export declare const XML_SCHEMA_INSTANCE_NS = "http://www.w3.org/2001/XMLSchema-instance";
/**
 * Extended properties markup namespace (unprefixed root `Properties`).
 * shared-documentPropertiesExtended.xsd.
 */
export declare const EXTENDED_PROPERTIES_NS = "http://schemas.openxmlformats.org/officeDocument/2006/extended-properties";
/**
 * Variant types namespace (`vt:`) used inside extended/custom properties.
 */
export declare const DOC_PROPS_VTYPES_NS = "http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes";
/**
 * True when `type` is a core-properties package relationship.
 */
export declare function isCorePropertiesRelationshipType(type: string): boolean;
/**
 * True when `type` is an extended-properties relationship (Strict or Transitional).
 */
export declare function isExtendedPropertiesRelationshipType(type: string): boolean;
/**
 * True when `type` is a custom-properties relationship (Strict or Transitional).
 */
export declare function isCustomPropertiesRelationshipType(type: string): boolean;
/**
 * Drawing part content type used by spreadsheetDrawing parts.
 * ECMA-376-1 / dml-spreadsheetDrawing.xsd (CT_WsDr).
 */
export declare const DRAWING_CONTENT_TYPE = "application/vnd.openxmlformats-officedocument.drawing+xml";
/**
 * Drawing relationship type (Transitional).
 * ECMA-376-1 officeDocument relationships / worksheet drawings.
 */
export declare const DRAWING_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/drawing";
/**
 * Drawing relationship type (Strict).
 * MS-OI29500 / ECMA-376 Strict.
 */
export declare const DRAWING_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/drawing";
/**
 * True when `type` is a drawing relationship (Strict or Transitional).
 */
export declare function isDrawingRelationshipType(type: string): boolean;
/**
 * VML drawing part content type (legacy form controls / comments chrome).
 * Citation: XlsIO `ContentTypes` / Office Open XML package conventions for
 * `vmlDrawingN.vml` under `/xl/drawings/`.
 */
export declare const VML_DRAWING_CONTENT_TYPE = "application/vnd.openxmlformats-officedocument.vmlDrawing";
/**
 * VML drawing relationship type (Transitional).
 * Citation: XlsIO `RelationTypes.VmlDrawing` /
 * `http://schemas.openxmlformats.org/officeDocument/2006/relationships/vmlDrawing`.
 */
export declare const VML_DRAWING_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/vmlDrawing";
/**
 * VML drawing relationship type (Strict).
 * MS-OI29500 / ECMA-376 Strict mirror of the Transitional vmlDrawing rel.
 */
export declare const VML_DRAWING_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/vmlDrawing";
/**
 * True when `type` is a VML drawing relationship (Strict or Transitional).
 */
export declare function isVmlDrawingRelationshipType(type: string): boolean;
/**
 * DrawingML (dml-main) namespace.
 * ECMA-376-1 / dml-main.xsd (a: prefix in text-box context).
 */
export declare const DRAWINGML_MAIN_NS_TRANSITIONAL = "http://schemas.openxmlformats.org/drawingml/2006/main";
/**
 * DrawingML spreadsheet drawing namespace (xdr: prefix).
 * ECMA-376-1 / dml-spreadsheetDrawing.xsd.
 */
export declare const DRAWINGML_SPREADSHEET_NS_TRANSITIONAL = "http://schemas.openxmlformats.org/drawingml/2006/spreadsheetDrawing";
/**
 * Chart part content type (DrawingML chart).
 * ECMA-376-1 / dml-chart.xsd (`c:chartSpace`).
 */
export declare const CHART_CONTENT_TYPE = "application/vnd.openxmlformats-officedocument.drawingml.chart+xml";
/**
 * Chart relationship type (Transitional).
 * ECMA-376-1 officeDocument relationships / chart parts.
 */
export declare const CHART_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/chart";
/**
 * Chart relationship type (Strict).
 * MS-OI29500 / ECMA-376 Strict.
 */
export declare const CHART_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/chart";
/**
 * True when `type` is a chart relationship (Strict or Transitional).
 */
export declare function isChartRelationshipType(type: string): boolean;
/**
 * DrawingML chart namespace (`c:` prefix).
 * ECMA-376-1 / dml-chart.xsd.
 */
export declare const DRAWINGML_CHART_NS_TRANSITIONAL = "http://schemas.openxmlformats.org/drawingml/2006/chart";
/**
 * ChartEx part content type (Excel 2016+ extended charts).
 * [MS-ODRAWXML] §2.1.5 ChartEx.
 */
export declare const CHARTEX_CONTENT_TYPE = "application/vnd.ms-office.chartex+xml";
/**
 * ChartEx relationship type (drawing → ChartEx part).
 * [MS-ODRAWXML] §2.1.5 / office 2014 relationships.
 */
export declare const CHARTEX_REL_TYPE = "http://schemas.microsoft.com/office/2014/relationships/chartEx";
/**
 * True when `type` is a ChartEx relationship.
 */
export declare function isChartExRelationshipType(type: string): boolean;
/**
 * ChartEx / DrawingML chartex namespace (`cx:` prefix).
 * [MS-ODRAWXML] §2.24 / drawing/2014/chartex.
 * Used as `a:graphicData/@uri` and on the drawing `chart` CT_RelId reference.
 */
export declare const DRAWINGML_CHARTEX_NS = "http://schemas.microsoft.com/office/drawing/2014/chartex";
/**
 * Persons part content type ([MS-XLSX] §2.1.18).
 * Root `personList` — workbook-level author store for threaded comments.
 */
export declare const PERSON_CONTENT_TYPE = "application/vnd.ms-excel.person+xml";
/**
 * Persons relationship type ([MS-XLSX] §2.1.18).
 * Source: workbook part → `/xl/persons/person.xml`.
 */
export declare const PERSON_REL_TYPE = "http://schemas.microsoft.com/office/2017/10/relationships/person";
/**
 * True when `type` is a persons relationship.
 */
export declare function isPersonRelationshipType(type: string): boolean;
/**
 * Threaded comments part content type ([MS-XLSX] §2.1.17).
 * Root `ThreadedComments` — per worksheet.
 */
export declare const THREADED_COMMENTS_CONTENT_TYPE = "application/vnd.ms-excel.threadedcomments+xml";
/**
 * Threaded comments relationship type ([MS-XLSX] §2.1.17).
 * Source: worksheet part → threaded comments part.
 */
export declare const THREADED_COMMENTS_REL_TYPE = "http://schemas.microsoft.com/office/2017/10/relationships/threadedComment";
/**
 * True when `type` is a threaded-comments relationship.
 */
export declare function isThreadedCommentsRelationshipType(type: string): boolean;
/**
 * SpreadsheetML 2018 threaded comments namespace ([MS-XLSX] §5.23).
 * Used by `personList` and `ThreadedComments` roots.
 */
export declare const THREADED_COMMENTS_NS = "http://schemas.microsoft.com/office/spreadsheetml/2018/threadedcomments";
/**
 * Legacy comments part content type (ECMA-376-1 §18.7).
 * Used for threaded-comment placeholder comments ([MS-XLSX] §2.3.7.3).
 */
export declare const COMMENTS_CONTENT_TYPE = "application/vnd.openxmlformats-officedocument.spreadsheetml.comments+xml";
/**
 * Legacy comments relationship type (Transitional).
 * ECMA-376-1 officeDocument relationships / comments parts.
 */
export declare const COMMENTS_REL_TYPE_TRANSITIONAL = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/comments";
/**
 * Legacy comments relationship type (Strict).
 * MS-OI29500 / ECMA-376 Strict.
 */
export declare const COMMENTS_REL_TYPE_STRICT = "http://purl.oclc.org/ooxml/officeDocument/relationships/comments";
/**
 * True when `type` is a legacy comments relationship (Strict or Transitional).
 */
export declare function isCommentsRelationshipType(type: string): boolean;