esbuild / tsup

Here is a simple example of an integration with tsup.

import { defineConfig } from 'tsup';
import 'varlock/auto-load';
import { getBuildTimeReplacements } from 'varlock';

export default defineConfig({
  // ...
  esbuildOptions(options) {
    options.define ||= {};
    Object.assign(options.define, getBuildTimeReplacements());
  },
});