tern-lint

tern-lint provides :

• the tern lint plugin lint.js to validate JS files.
• the CodeMirror lint addon tern-lint.js which uses tern lint plugin lint.js

Integration

See Integration for more information to integrate the tern lint plugin in your editor.

with CodeMirror :

Here a screenshot with tern lint and CodeMirror :

with Eclipse :

If you are Eclipse user, you can use the tern lint.js too. See Tern IDE & Validation

with Emacs

See tern-lint.el for more information.

with other editor

If you wish to integrate the tern lint with an editor (vim, etc), here the JSON request to post to the tern server :

{
 "query": {
  "type": "lint",
  "file": "test.js",
  "files": [
   {
    "name": "test.js",
    "text": "var elt = document.getElementByIdXXX('myId');",
    "type": "full"
   }
  ]
 }
}

and the JSON response of the tern server :

{
 "messages": [
  {
   "message": "Unknow property 'getElementByIdXXX'",
   "from": 19,
   "to": 36,
   "severity": "warning"
  }
 ]
}

Validation rules

tern lint validate JS files but not syntax errors, it manages those validation rules :

• unknown property. (ex : document.getElementByIdXXX where getElementByIdXXX is an unknown property of document)
• unknown identifier. (ex : a = '' where a is an unknown identifier)
• not a function (ex : var a = []; a.length() is not valid because length of array is not a function)
• invalid argument (ex : document.getElementById(1000) is not valid because 1000 is a number and not a string)

See Validation rules for more informations.

Structure

The basic structure of the project is given in the following way:

• demos/ demos with tern lint plugin which use CodeMirror.
• codemirror/ contains the CodeMirror lint addon tern-lint.js, which is an implementation of CodeMirror lint addon with tern.lint.
• lint.js/ the tern lint plugin.
• test/ contains test of tern lint plugin.