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Add support for source maps #88

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34 changes: 7 additions & 27 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ import { createHook } from 'node:async_hooks'
import { readFileSync } from 'node:fs'
import { relative } from 'node:path'
import { fileURLToPath } from 'node:url'
import { getCallSites } from 'node:util'

const IGNORED_TYPES = [
'TIMERWRAP',
Expand All @@ -17,7 +18,7 @@ const hook = createHook({
return
}

const stacks = captureStackTraces().slice(1)
const stacks = getCallSites().slice(1)

asyncResources.set(asyncId, {
type,
Expand All @@ -42,7 +43,7 @@ export default function whyIsNodeRunning (logger = console) {
if (resource === undefined) {
return false
}

return resource.hasRef?.() ?? true
})

Expand All @@ -55,7 +56,7 @@ export default function whyIsNodeRunning (logger = console) {

function printStacks (asyncResource, logger) {
const stacks = asyncResource.stacks.filter((stack) => {
const fileName = stack.fileName
const fileName = stack.scriptName
return fileName !== null && !fileName.startsWith('node:')
})

Expand All @@ -72,9 +73,9 @@ function printStacks (asyncResource, logger) {
for (const stack of stacks) {
const location = formatLocation(stack)
const padding = ' '.repeat(maxLength - location.length)

try {
const lines = readFileSync(normalizeFilePath(stack.fileName), 'utf-8').split(/\n|\r\n/)
const lines = readFileSync(normalizeFilePath(stack.scriptName), 'utf-8').split(/\n|\r\n/)
const line = lines[stack.lineNumber - 1].trim()

logger.error(`${location}${padding} - ${line}`)
Expand All @@ -85,7 +86,7 @@ function printStacks (asyncResource, logger) {
}

function formatLocation (stack) {
const filePath = formatFilePath(stack.fileName)
const filePath = formatFilePath(stack.scriptName)
return `${filePath}:${stack.lineNumber}`
}

Expand All @@ -99,24 +100,3 @@ function formatFilePath (filePath) {
function normalizeFilePath (filePath) {
return filePath.startsWith('file://') ? fileURLToPath(filePath) : filePath
}

function prepareStackTrace(error, stackTraces) {
return stackTraces.map(stack => ({
lineNumber: stack.getLineNumber(),
fileName: stack.getFileName()
}))
}

// See: https://v8.dev/docs/stack-trace-api
function captureStackTraces () {
const target = {}
const original = Error.prepareStackTrace

Error.prepareStackTrace = prepareStackTrace
Error.captureStackTrace(target, captureStackTraces)

const capturedTraces = target.stack
Error.prepareStackTrace = original

return capturedTraces
}