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const string = require('./string');
const TEXT_NODE = typeof Element !== 'undefined' && Element.TEXT_NODE || 3;
module.exports = function(root) {
handleElement(root);
return root;
};
function handleElement(el) {
if (['CODE', 'PRE', 'SCRIPT', 'STYLE'].indexOf(el.nodeName.toUpperCase()) !== -1) {
return;
}
let i, node, nodeInfo;
let text = '';
const childNodes = el.childNodes;
const textNodes = [];
// compile all text first so we handle working around child nodes
for (i = 0; i < childNodes.length; i++) {
node = childNodes[i];
if (node.nodeType === TEXT_NODE || node.nodeName === '#text') {
textNodes.push([node, text.length]);
text += node.nodeValue || node.value;
} else if (node.childNodes && node.childNodes.length) {
text += handleElement(node);
}
}
text = string(text, { retainLength: true });
for (i in textNodes) {
nodeInfo = textNodes[i];
if (nodeInfo[0].nodeValue) {
nodeInfo[0].nodeValue = substring(text, nodeInfo[0].nodeValue, nodeInfo[1]);
} else if (nodeInfo[0].value) {
nodeInfo[0].value = substring(text, nodeInfo[0].value, nodeInfo[1]);
}
}
return text;
}
function substring(text, value, position) {
return text.substr(position, value.length).replace('\u2063', '');
}
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