53 lines
1.6 KiB
JavaScript
53 lines
1.6 KiB
JavaScript
const getLastPart = (functionName /* : string */) /* : string */ => {
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// The match may be something like 'Object.createEmotionProps' or
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// 'Loader.prototype.render'
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const parts = functionName.split('.')
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return parts[parts.length - 1]
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}
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const getFunctionNameFromStackTraceLine = (line /*: string*/) /*: ?string*/ => {
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// V8
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let match = /^\s+at\s+([A-Za-z0-9$.]+)\s/.exec(line)
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if (match) return getLastPart(match[1])
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// Safari / Firefox
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match = /^([A-Za-z0-9$.]+)@/.exec(line)
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if (match) return getLastPart(match[1])
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return undefined
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}
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const internalReactFunctionNames = /* #__PURE__ */ new Set([
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'renderWithHooks',
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'processChild',
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'finishClassComponent',
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'renderToString'
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])
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// These identifiers come from error stacks, so they have to be valid JS
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// identifiers, thus we only need to replace what is a valid character for JS,
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// but not for CSS.
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const sanitizeIdentifier = identifier => identifier.replace(/\$/g, '-')
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export const getLabelFromStackTrace = stackTrace => {
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if (!stackTrace) return undefined
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const lines = stackTrace.split('\n')
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for (let i = 0; i < lines.length; i++) {
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const functionName = getFunctionNameFromStackTraceLine(lines[i])
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// The first line of V8 stack traces is just "Error"
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if (!functionName) continue
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// If we reach one of these, we have gone too far and should quit
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if (internalReactFunctionNames.has(functionName)) break
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// The component name is the first function in the stack that starts with an
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// uppercase letter
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if (/^[A-Z]/.test(functionName)) return sanitizeIdentifier(functionName)
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}
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return undefined
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}
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