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// Squashing text nodes allows to combine multiple text nodes into one and write
// to `Output` instance only once. For example, <Text>hello{' '}world</Text>
// is actually 3 text nodes, which would result 3 writes to `Output`.
//
// Also, this is necessary for libraries like ink-link (https://github.com/sindresorhus/ink-link),
// which need to wrap all children at once, instead of wrapping 3 text nodes separately.
const squashTextNodes = (node) => {
let text = '';
for (let index = 0; index < node.childNodes.length; index++) {
const childNode = node.childNodes[index];
if (childNode === undefined) {
continue;
}
let nodeText = '';
if (childNode.nodeName === '#text') {
nodeText = childNode.nodeValue;
}
else {
if (childNode.nodeName === 'ink-text' ||
childNode.nodeName === 'ink-virtual-text') {
nodeText = squashTextNodes(childNode);
}
// Since these text nodes are being concatenated, `Output` instance won't be able to
// apply children transform, so we have to do it manually here for each text node
if (nodeText.length > 0 &&
typeof childNode.internal_transform === 'function') {
nodeText = childNode.internal_transform(nodeText, index);
}
}
text += nodeText;
}
return text;
};
export default squashTextNodes;
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