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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = mergeScripts;
/* Merge multiple <script> into one */
function mergeScripts(tree) {
let scriptNodesIndex = {};
let scriptSrcIndex = 1;
tree.match({
tag: 'script'
}, node => {
const nodeAttrs = node.attrs || {};
if (nodeAttrs.src) {
scriptSrcIndex++;
return node;
}
const scriptType = nodeAttrs.type || 'text/javascript';
if (scriptType !== 'text/javascript' && scriptType !== 'application/javascript') {
return node;
}
const scriptKey = JSON.stringify({
id: nodeAttrs.id,
class: nodeAttrs.class,
type: scriptType,
defer: nodeAttrs.defer !== undefined,
async: nodeAttrs.async !== undefined,
index: scriptSrcIndex
});
if (!scriptNodesIndex[scriptKey]) {
scriptNodesIndex[scriptKey] = [];
}
scriptNodesIndex[scriptKey].push(node);
return node;
});
for (const scriptNodes of Object.values(scriptNodesIndex)) {
let lastScriptNode = scriptNodes.pop();
scriptNodes.reverse().forEach(scriptNode => {
let scriptContent = (scriptNode.content || []).join(' ');
scriptContent = scriptContent.trim();
if (scriptContent.slice(-1) !== ';') {
scriptContent += ';';
}
lastScriptNode.content = lastScriptNode.content || [];
lastScriptNode.content.unshift(scriptContent);
scriptNode.tag = false;
scriptNode.content = [];
});
}
return tree;
}