Dynamic import in NodeJS (in Gatsby): A dynamic import callback was not specified

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I'm trying to use the dynamic imports in NodeJS, with a eS6 file, but can't get it work

I'm using it in a gatsby project within its gatsby-node.js file

exports.createPages = async props => {
  
  //...

  const name = './test'
  ;(async () => {
    const data = await import(name)
    console.log(data)
  })()

Where test.js is just

export const hey = 'hi'

But I always get this A dynamic import callback was not specified.

Why is it not working? NodeJS version is 12.18.4

gatsby dynamic-import node.js import
1 Answers

Since it's not currently a publish version, you need to install each desired module (babel-plugin-syntax-dynamic-import in your case) of ES6 and add it yo your babel configuration.

Run:

npm install --save-dev @babel/plugin-syntax-dynamic-import

Then, in your Babel file (babel.config.js or .babelrc in the root of your project) add it to plugins array:

  "plugins": ["@babel/plugin-syntax-dynamic-import"]

Ideally, your Babel file should look like:

module.exports = function(api) {
  api.cache(true);

  const presets = [
    [`@babel/preset-env`, { 'useBuiltIns': `usage`, 'corejs': `2` }],
    [`@babel/preset-react`, { 'development': true, minify: true }],
  ];

  const plugins = [
    `@babel/plugin-syntax-dynamic-import`,
  ];

  return { presets, plugins };
};
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