docx-js/src/file/styles/index.ts

import { XmlComponent } from "file/xml-components";
import { DocumentAttributes } from "../document/document-attributes";
import { DocumentDefaults } from "./defaults";
import { ParagraphStyle } from "./style";

export class Styles extends XmlComponent {
    constructor() {
        super("w:styles");
        this.root.push(
            new DocumentAttributes({
                mc: "http://schemas.openxmlformats.org/markup-compatibility/2006",
                r: "http://schemas.openxmlformats.org/officeDocument/2006/relationships",
                w: "http://schemas.openxmlformats.org/wordprocessingml/2006/main",
                w14: "http://schemas.microsoft.com/office/word/2010/wordml",
                w15: "http://schemas.microsoft.com/office/word/2012/wordml",
                Ignorable: "w14 w15",
            }),
        );
    }

    public push(style: XmlComponent): Styles {
        this.root.push(style);
        return this;
    }

    public createDocumentDefaults(): DocumentDefaults {
        const defaults = new DocumentDefaults();
        this.push(defaults);
        return defaults;
    }

    public createParagraphStyle(styleId: string, name?: string): ParagraphStyle {
        const para = new ParagraphStyle(styleId, name);
        this.push(para);
        return para;
    }
}