How to use the @ephox/swag.remapImports function in @ephox/swag

format: 'iife',
            onwarn: swag.onwarn,
            plugins: [
              swag.nodeResolve({
                basedir: __dirname,
                prefixes: gruntUtils.prefixes({
                  'tinymce/core': 'lib/globals/tinymce/core'
                }, [
                  [`tinymce/plugins/${name}`, `lib/plugins/${name}/main/ts`]
                ]),
                mappers: [
                  swag.mappers.replaceDir('./lib/core/main/ts/api', './lib/globals/tinymce/core/api'),
                  swag.mappers.invalidDir('./lib/core/main/ts')
                ]
              }),
              swag.remapImports()
            ]
          },
          files:[ { src: `lib/plugins/${name}/main/ts/Main.js`, dest: `js/tinymce/plugins/${name}/plugin.js` } ]
        };
      }),
      gruntUtils.generate(themes, 'theme', (name) => {

var config = {
    rollup: {
      options: {
        treeshake: true,
        moduleName: name,
        format: 'iife',
        banner: '(function () {',
        footer: '})()',
        plugins: [
          swag.nodeResolve({
            basedir: __dirname,
            prefixes: {
              'tinymce/core': '../../lib/globals/tinymce/core'
            }
          }),
          swag.remapImports()
        ]
      },
      plugin: {
        files:[
          {
            src: `../../../lib/plugins/${name}/src/main/ts/Plugin.js`,
            dest: jsPluginDestFile
          }
        ]
      }
    },

    uglify: {
      options: {
        output: {
          ascii_only: true

rollup: {
      options: {
        treeshake: true,
        moduleName: name,
        format: 'iife',
        banner: '(function () {',
        footer: '})()',
        plugins: [
          swag.nodeResolve({
            basedir: __dirname,
            prefixes: {
              'tinymce/core': '../../lib/globals/tinymce/core',
              'tinymce/ui': '../../lib/ui/src/main/ts'
            }
          }),
          swag.remapImports()
        ]
      },
      theme: {
        files:[
          {
            src: `../../../lib/themes/${name}/src/main/ts/Theme.js`,
            dest: jsThemeDestFile
          }
        ]
      }
    },

    uglify: {
      options: {
        output: {
          ascii_only: true

rollup: {
      options: {
        treeshake: true,
        moduleName: 'tinymce',
        format: 'iife',
        banner: '(function () {',
        footer: '})()',
        plugins: [
          swag.nodeResolve({
            basedir: __dirname,
            prefixes: {
              'tinymce/core': '../../src/core/dist/globals/tinymce/core',
              'tinymce/ui': '../../lib/ui/main/ts'
            }
          }),
          swag.remapImports()
        ]
      },
      core: {
        files:[
          {
            src: '../../lib/core/src/main/ts/api/Main.js',
            dest: 'dist/tinymce/tinymce.js'
          }
        ]
      }
    },

    uglify: {
      options: {
        output: {
          ascii_only: true,