htmllint/lib/rules/link-min-length-4.js

An unofficial html5 linter.

var Issue = require('../issue');
var lodash = require('lodash');

module.exports = {
    name: 'link-min-length-4',
    on: ['tag'],
    filter: ['a'],
    desc: [
        'WCAG rule [38](http://oaa-accessibility.org/wcag20/rule/38/):',
        'Link text should be as least four 4 characters long.',
        '',
        'This rule is applied only to `a` tags with a nonempty `href` attribute.'
    ].join('\n')
};

module.exports.lint = function (element, opts) {
    // It's not a link if it doesn't have an href
    if (!element.attribs.href || !element.attribs.href.value) {
        return [];
    }

    var textElements = lodash.filter(element.children, function (node) { return node.type == 'text' });
    var content = textElements.map(function (textElement) { return textElement.data }).join('').trim();
    length = content.length;
    return length < 4
        ? new Issue('E059', element.openLineCol, { 'content': content, 'length': length })
        : [];
};