TagResourceCommand

import { BillingClient, TagResourceCommand } from "@aws-sdk/client-billing"; // ES Modules import
// const { BillingClient, TagResourceCommand } = require("@aws-sdk/client-billing"); // CommonJS import
const client = new BillingClient(config);
const input = { // TagResourceRequest
  resourceArn: "STRING_VALUE", // required
  resourceTags: [ // ResourceTagList // required
    { // ResourceTag
      key: "STRING_VALUE", // required
      value: "STRING_VALUE",
    },
  ],
};
const command = new TagResourceCommand(input);
const response = await client.send(command);
// {};