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tj-mode

Highlight JavaScript with Tern.

Features

Syntactic Highlighting

• Keywords + this
• Variable declarations and function arguments
• Function names (incl. variables and object properties)
• Primitive literals (strings, numbers, booleans etc)
• Comments (inline and block)

Extra Features 💥

• Syntax errors (from strict parser)
• Undeclared variables
• Trailing commas in array and object literals
• Missing semicolons after statements

Emacs Mode

tj-mode is a major mode. Apart from syntax highligting, the mode provides:

• Syntactic beginning-of-defun and end-of-defun
• Automatic (idle) highlighting of references to the variable at point

Bouncing indentation is borrowed from the excellent js2-mode.

Other Editors

Contributions of other editor plugins are very welcome.

How to Install

Install like any other Tern plugin. The Tern plugin is called tern-highlight, and it's on on npm, so:

npm install -g tern-highlight

You also need to enable the plugin in your .tern-project files:

{
    "plugins": {
        "highlight": {}
    }
}

How to Install the Emacs Plugin

The Emacs package is not on MELPA yet, so you have to install it manually:

(load "~/.emacs.d/site-lisp/tj-mode.el")
(add-to-list 'auto-mode-alist '("\\.js\\'" . tj-mode))

Tests

TODO

Credits

Some of the code in tokens.js (the part about undefined variables) is taken from tern-lint.

P.S.

This package is not written by TJ Holowaychuk 😄