How to compile zip.js so that it can adapt to lower versions of browsers, such as chrome 49

[huangminsky]

How to compile zip.js so that it can adapt to lower versions of browsers, such as chrome 49 ?

【rollup.config.js】

import resolve from '@rollup/plugin-node-resolve';
import babel from "rollup-plugin-babel";
export default [
    {
        input: 'index',
        output: {
            name: 'timeout',
            file: 'bundle.js',
            format: 'cjs'
        },
        plugins: [
            babel({ runtimeHelpers: true})
        ],
        // plugins: [resolve(), babel({ babelHelpers: 'bundled' })]
    }
];

【.babelrc】

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "modules": false,
        "useBuiltIns": "usage",
        "corejs": "3.19.1",
        "targets": {
          "chrome": "49"
        }
      }
    ]
  ],
  "plugins": [
    [
      "@babel/plugin-transform-runtime"
    ]
  ],
  "ignore": [
    "node_modules/**"
  ]
}

---

Then I imported bundle.js, and zipWriter.add(file.name, new zip.BlobReader(file), options);

However, an error is reported in the lower version browser

Then I check the error log ,It's from z-worker-inline.js

anyone know what happened ??

[gildas-lormeau]

For the record, zip.js now includes a rollup script to build files for older browsers like IE 11, see https://github.com/gildas-lormeau/zip.js/blob/master/rollup-es5.config.js.