How to make iife register in a var with a given name?

[lpellegr]

Is there a way to give a name to the iife like rollup allows with the name option? This is useful so that the iife is loaded in a var with name associated to the library.

Here is the rollup configuration I am referring to:

export default {
    input: 'src/index.ts',
    output: {
        file: 'dist/browser/index.js',
        format: 'iife',
        name: 'mylib', // <-----------
        sourcemap: true
    },
    plugins: [
        resolve(),
        commonjs(),
        typescript({ tsconfig: './tsconfig.json' }),
        terser()
    ]
}

Is there a way to do the same with tsup?

[lpellegr]

It seems there is no CLI option but it is possible using a configuration file tsup.config.ts:

export default defineConfig({
    clean: true,
    dts: true,
    entry: ['src/index.ts'],
    globalName: 'mylib',
    format: ['cjs', 'esm', 'iife'],
    minify: 'terser',
    treeshake: true
});