Customizable JavaScript syntax highlighting for Sublime Text supporting JSX, Flow, and more. You can use JS Custom as a drop-in replacement for babel-sublime or create your own customized syntax with exactly the features you need. Because JS Custom is based on the core JavaScript syntax, it will work with most tools written for the original — and as the original is updated and improved, JS Custom will inherit those improvements.

1. Download & Install Sublime Text 3 (https://www.sublimetext.com/3)
2. Go to the menu Tools -> Install Package Control, then, wait few seconds until the installation finishes up
3. Now, Go to the menu Preferences -> Package Control
4. Type Add Channel on the opened quick panel and press Enter
5. Then, input the following address and press Enter

   https://raw.githubusercontent.com/evandrocoan/StudioChannel/master/channel.json
   

6. Go to the menu Tools -> Command Palette... (Ctrl+Shift+P)
7. Type Preferences: Package Control Settings – User on the opened quick panel and press Enter
8. Then, find the following setting on your Package Control.sublime-settings file:

   "channels":
   [
       "https://packagecontrol.io/channel_v3.json",
       "https://raw.githubusercontent.com/evandrocoan/StudioChannel/master/channel.json",
   ],

9. And, change it to the following, i.e., put the https://raw.githubusercontent... line as first:

   "channels":
   [
       "https://raw.githubusercontent.com/evandrocoan/StudioChannel/master/channel.json",
       "https://packagecontrol.io/channel_v3.json",
   ],

   • The https://raw.githubusercontent... line must to be added before the https://packagecontrol.io... one, otherwise, you will not install this forked version of the package, but the original available on the Package Control default channel https://packagecontrol.io...
10. Now, go to the menu Preferences -> Package Control
11. Type Install Package on the opened quick panel and press Enter
12. Then, search for JSCustom and press Enter

See also:

1. ITE - Integrated Toolset Environment
2. Package control docs for details.

JS Custom ships with two example configurations: “JS Custom - Default” and “JS Custom - React”. These should automatically be built and available for use upon installation.

To customize your syntaxes, choose Preferences → Package Settings → JS Custom → Settings from the menubar. The package default settings will be shown on the left; your user settings will be on the right. When you change your user settings, your custom syntaxes will automatically be recompiled. (This may take a few seconds, especially if you have a lot of configurations.)

If you modify your user settings outside Sublime Text, this package may not notice your modifications. You can force it to rebuild all of your custom syntaxes by choosing Preferences → Package Settings → JS Custom → Rebuild Syntaxes from the menubar, or by choosing “JS Custom: Rebuild Syntaxes” from the command palette.

JS Custom provides the following commands. Except for “JSX Close Tag”, they are available in the command palette and under Preferences → Package Settings → JS Custom.

Rebuild all of your custom syntaxes and remove any obsolete compiled syntaxes.

This command takes an optional versions argument accepting a list of configuration names. If you pass versions, only the specified configurations will be rebuilt.

Remove the Packages/User/JS Custom directory, including all compiled syntaxes.

Open the default JS Custom preferences and your own JS Custom user preferences side-by-side in a new window (using the built-in edit_settings command).

As the built-in close_tag command, but should work for JSX tags.

This command is not available in the command palette or the JS Custom menu. By default, whenever you run the close_tag command in a JavaScript file, then the jsx_close_tag command will be run instead. You can disable this with the jsx_close_tag setting.

The following options are available at the top level of your user settings:

An object containing one or more named configurations. The keys should be the names you would like your custom configurations to have. The values are objects specifying syntax options.

An object specifying default syntax options that will apply to all of your syntaxes. Your named configurations will override these defaults.

An object specifying a configuration to use when another syntax embeds the source.js scope.

If true, JS Custom will automatically rebuild your syntaxes when you modify your user settings. Only syntaxes whose configurations have changed will be rebuilt. If auto_build is disabled, you will have to run the rebuild command manually.

If true, when you run the close_tag command in a JavaScript file, this package's jsx_close_tag command will be invoked instead.

These options, specified in your defaults or in a named custom configuration, determine what features your custom syntaxes will have. Omitted options will be treated as null.

These options enable support for various proposed language features. These proposals may change unexpectedly. If they stabilize, they will eventually be incorporated into the core JavaScript syntax and these extensions will be removed.

Support the proposed pipeline operator.

Support the proposed slice notation.

These extensions go beyond the base JavaScript syntax to support third-party features.

Highlight JSX.

Highlight Flow type annotations.

Highlight eslint configuration directives in comments.

Highlight template string literals for Styled Components.

These extensions allow you to personalize your highlighting in various ways.

Highlight unquoted object keys as strings, matching babel-sublime's behavior.

Highlight user-defined tagged template literals.

Each key in the given object should be a JavaScript identifier representing a template literal tag. The associated value should be a string specifying a context to include: for instance, “scope:source.css”

Example:

{
    "configurations": {
        "My Config": {
            "custom_template_tags": {
                "style": "scope:source.css"
            }
        }
    }
}

Then, if you use “JS Custom - My Config” to highlight the following code, the contents of the template literal will be highlighted as CSS.

const myStyle = style`div { color: red }`;

By default, the special embed_configuration disables this to avoid syntax recursion errors.

These options don't affect the syntax highlighting itself, but rather the way that Sublime uses the syntax.

The name of the syntax as it will appear in the syntax selector. (If this is omitted, the syntax will be named “JS Custom - name”, where name is the key in the configurations object.)

The top-level scope that will be used for the syntax. (If this is omitted, the scope will be “source.js.name”, where name is based on the key in the configurations object.)

An array of file extensions. Files with the given extensions will be use this syntax.

If this is true, the compiled syntax will not appear in the syntax menu or the command palette. It can still be referenced or included by other syntaxes.

They are in the syntax selection menu under "User". It would be nice to have them listed under "JS Custom", but when generating that menu Sublime only looks at the physical location of the syntax definition files, and JS Custom compiles them to User/JS Custom/Syntaxes.

If you want unquoted object keys to be highlighted as strings, set the string_object_keys configuration option to true.

Other than that, the differences occur when Babel-sublime's syntax does not conform to the scope naming guidelines or other best practices. If you liked the old appearance, then rather than modifying the syntax itself I would suggest modifying your theme. You can find further discussion here.

To request a feature or report a bug, create a new issue. All suggestions are welcome.

When reporting a bug, please include a code snippet that demonstrates the problem. If the bug exists in Sublime's core JavaScript syntax, it should be reported here — but if you're not sure, then go ahead and post it here.

When requesting a new feature, please include a link to any relevant documentation. Because of the unique design of JS Custom, we can accommodate a variety of nonstandard features.