Fails loading esm module. Could not autodetect exports

[snaerth]

I am trying to move a CRA project to Snowpack CRA.
I am getting stuck when running snowpack dev

First Snowpack throws this exports error at me.

✘ Could not auto-detect exports for ../node_modules/draft-js-import-markdown/esm/main.js
  Unexpected token 'export'

then the develpment process crashes with this related error I assume.

✖ snowpack failed to load snowpack-wrap:../node_modules/draft-js-import-markdown/esm/main.js
  'default' is not exported by node_modules/draft-js-import-markdown/esm/main.js, imported by snowpack-wrap:../node_modules/draft-js-import-markdown/esm/main.js

draft-js-import-markdown has a ESM module. I cannot figure out how I can fix this.

This is my current snowpack config

module.exports = {
  extends: "@snowpack/app-scripts-react",
  plugins: [
    "@snowpack/plugin-dotenv",
    ["@snowpack/plugin-build-script", { cmd: "postcss", input: [".css"], output: [".css"] }]
  ],
  exclude: [
    "**/node_modules/**/*",
    "**/*.graphql",
    "**/__tests__ /*",
    "**/*.@(json_|ts_|tsx_|graphql_)",
    "**/*.@(spec|test).@(js|mjs)"
  ],
  install: ["draft-js-import-markdown"],
  installOptions: {
    namedExports: [
      "@contentful/rich-text-react-renderer",
      "class-validator",
      "draft-js",
      "ts-keycode-enum",
      "draft-js-import-markdown"
    ],
    rollup: {
      plugins: [require("rollup-plugin-node-polyfills")()]
    }
  },
  alias: {
    "@app": "./src"
  }
}

Here is the contents of node_modules/draft-js-import-markdown/esm/main.js

export { default as stateFromMarkdown } from './stateFromMarkdown';
export { default as MarkdownParser } from './MarkdownParser';

[snaerth]

Solved it by inserting absolute path draft-js-import-markdown/esm/main.js to installOptions.namedExports.

[snaerth]

  installOptions: {
    namedExports: [
      "@contentful/rich-text-react-renderer",
      "class-validator",
      "draft-js",
      "ts-keycode-enum",
      "draft-js-import-markdown/esm/main.js"
    ],
    rollup: {
      plugins: [require("rollup-plugin-node-polyfills")()]
    }
  },