You can easily add existing or custom esbuild plugins to your build process using the esbuildPlugin extension: 
import { defineConfig } from "@trigger.dev/sdk";
import { esbuildPlugin } from "@trigger.dev/build/extensions";
import { sentryEsbuildPlugin } from "@sentry/esbuild-plugin";

export default defineConfig({
  project: "<project ref>",
  // Your other config settings...
  build: {
    extensions: [
      esbuildPlugin(
        sentryEsbuildPlugin({
          org: process.env.SENTRY_ORG,
          project: process.env.SENTRY_PROJECT,
          authToken: process.env.SENTRY_AUTH_TOKEN,
        }),
        // optional - only runs during the deploy command, and adds the plugin to the end of the list of plugins
        { placement: "last", target: "deploy" }
      ),
    ],
  },
});