gemini-core/lib/browser/client-scripts/lib.compat.js

Utility which contains common modules for gemini and hermione

'use strict';
/*jshint newcap:false*/
var Sizzle = require('sizzle');
var xpath = require('./xpath');

exports.queryFirst = function(selector) {
    if (xpath.isXpathSelector(selector)) {
        return xpath.queryFirst(selector);
    }
    var elems = Sizzle(exports.trim(selector) + ':first');
    return elems.length > 0 ? elems[0] : null;
};

exports.queryAll = function(selector) {
    if (xpath.isXpathSelector(selector)) {
        return xpath.queryAll(selector);
    }
    return Sizzle(selector);
};

exports.trim = function(str) {
    // trim spaces, unicode BOM and NBSP and the beginning and the end of the line
    // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim#Polyfill
    return str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
};

exports.getComputedStyle = require('./polyfills/getComputedStyle').getComputedStyle;
exports.matchMedia = require('./polyfills/matchMedia').matchMedia;