docx-js/ts/docx/run/index.ts

import {XmlComponent, Attributes} from "../xml-components";
import {RunProperties} from "./properties";
import {Bold} from "./emphasis";

export class Run implements XmlComponent {
    protected r: Array<XmlComponent>;
    private properties: RunProperties;

    constructor() {
        this.r = new Array<XmlComponent>();
        this.properties = new RunProperties();
        this.r.push(this.properties);
    }
    
    bold(): Run {
        this.properties.push(new Bold());
        return this;
    }
}