import i from 'import.macro';
i('./a/b');
i('./a/b');

import _aB from './a/b';
_aB;
_aB;

// .babel-plugin-macrosrc.js
module.exports = {
  importHelper: {
    // import i from 'import.macro'
    defaultImport: {
      transformSource: a => a
    },
    imports: [
      [
        'customImport',
        {
          prefix: '/path/to', // prefix source path
          isDefaultExport: true, // default is true
          transformSource: a => a // before add importDeclaration,transform sourcePath
        }
      ]
    ]
  }
};

import { customImport } from 'import.macro';
customImport('filename');

import filename from '../a/b/filename';
filename;

import { customImport } from 'import.macro';
customImport('@SomeComponent');

<SomeComponent />