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shared.js
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shared.js
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'use strict'
/**
* Functions shared between frontend (visualizer) and backend (analysis)
*/
function setStackTop (node, exclude = this.exclude) {
const childCount = node.children.length
const nodeIsExcluded = isNodeExcluded(node, exclude)
let topTotal = node.onStackTop.base
// Will be called many many times in browser, use vanilla for/i for speed
for (let i = 0; i < childCount; i++) {
// Add stack top of excluded children and chains of excluded descendents
topTotal += setStackTop(node.children[i], exclude)
}
node.onStackTop.asViewed = nodeIsExcluded ? 0 : topTotal
return nodeIsExcluded ? topTotal : 0
}
function isNodeExcluded (node, exclude = this.exclude) {
if (node.isInit && exclude.has('is:init')) return true
if (node.isInlinable && exclude.has('is:inlinable')) return true
if (exclude.has(node.category)) return true
// Namespace types by category in case someone installs a dependency named 'cpp' etc
if (exclude.has(`${node.category}:${node.type}`)) return true
return false
}
const defaultExclude = new Set([
'all-v8:v8',
'all-v8:cpp',
'all-v8:native',
'all-v8:regexp',
'is:init'
])
module.exports = {
setStackTop,
isNodeExcluded,
defaultExclude
}