Babel

💻

• Would you like to work on a fix?

How are you using Babel?

Programmatic API (babel.transform, babel.parse)

Input code

import { parse } from "@babel/parser";
import traverse from "@babel/traverse";

const ast = parse(
  `\
import * as mod from "mod";
mod.name();
<mod.name />;
`,
  {
    sourceType: "module",
    plugins: ["jsx"],
  }
);

traverse.de

Describe the feature

Related with swc-project/swc#3859.

We want to establish initial feature parity to existing @swc/cli to plan out migration with possible breaking changes.

These are initial flags we'd like to have.

• config
• config_file
• filename
• env_name
• ignore
• source_maps (https://github.com/swc-pro

Expected Behavior

defaultMode is used in Grommet component along with themeMode prop to determine initial theme mode between dark and light themes. As this property is used by Grommet Theme Designer, Grommet HPE Theme and in HPE Design System I would expect it to

For the most part this just works, but functions within tagged markup get weird indent assertions, e.g.,

        ${collection.map((item) => {
          const { prop1, prop2 } = workWith(item);  // eslint: expected indentation of 4 but found 10 (indent)
          return html`  // eslint: expected indentation of 4 but found 10 (indent)
            <${Widget} prop1=${prop1} prop2=${prop2} />

See:
https://david-dm.org/angular-fullstack/angular-fullstack-deps/5.0.0
https://david-dm.org/angular-fullstack/angular-fullstack-deps/5.0.0?type=dev

Validate the entire tree of options passed to preset.

Maybe, each plugin can export a list of options that only babili preset understands and we can validate them only when using the preset and not when using the plugin separately.

module.exports = function plugin() {};
module.exports.options = PropTypes.object({
  n: PropTypes.number
});

Or, this can be implemented in bab

in my old project , using webpack 1.x. And I use esbuild-loader replace babel-loader will print error

` building for production.../Users/wanglihui/WebstoreProject/onionfph5/project/node_modules/esbuild-loader/dist/plugin.js:12
compiler.hooks.thisCompilation.tap('esbuild', compilation => {
^

TypeError: Cannot read property 'thisCompilation' of undefined