How to build iife.js

[guangzan]

[golddream-y]

use hook.

  hooks: {
    'rollup:options': (ctx, option) => {
      option.output?.push(
        {
          name: 'xxxx',
          dir: ctx.options.outDir,
          format: 'iife',
          exports: 'auto',
          preferConst: true,
          externalLiveBindings: false,
          freeze: false,
        },
      )
    },
  },