What are some ways I can utilize Babel in standalone mode to convert an HTML import into a variable declaration?

I am trying to utilize the Babel plugin babel-plugin-transform-html-import-to-string to dynamically transform my code in the browser client. However, the babel-plugin-transform-html-import-to-string is designed to run on node with file libraries, which are unavailable when running online in the browser.

Is there a way to have Babel Standalone handle the transformation of this code?

This is my Declaration:

import template from './template.html';

It should Transform To:

var template = '<div>my template<div>';

Answer №1

I’ve discovered a simple method to incorporate the plugin code found within the babel-plugin-transform-html-import-to-string transform library.

First Step

Add Babel to your document.

Second Step

I proceeded to modify the code by eliminating the file libraries and substituting a string value for the code, specifically HTML. This particular code can be obtained from this library.

 function endsWith(str, search) {
    return str.indexOf(search, str.length - search.length) !== -1;
  }

  // Convert `import template from 'file.html';` to a variable `var template = '<div></div>'`;
  function babelPluginImportHtmlToString(o) {
    var t = o.types;
    return {
      visitor: {
        ImportDeclaration: {
          exit: function (path, state) {
            const node = path.node;

            if (endsWith(node.source.value, '.html')) {
              const html = require(node.source.value);

              path.replaceWith(t.variableDeclaration("var", [
                t.variableDeclarator(
                  t.identifier(node.specifiers[0].local.name),
                  t.stringLiteral(html))]));
            }
          }
        }
      }
    };
  }

Third Step

Next, I registered the function as a Babel plugin and initiated the transformation process utilizing the plugin.

  var plugins = [];
  plugins.push('babelPluginImportHtmlToString');

  babel.registerPlugin('babelPluginImportHtmlToString', babelPluginImportHtmlToString);

  // NOTE: Babel import statement not included in example
  var code = babel.transform(code, {
    filename: filename,
    plugins: plugins,
    presets: presets
  }).code;

Example Scenario

Included support for this in the Sencha Fiddle found here. You can view the example at: . If you inspect the devtools, it will be evident in require.js.

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