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source-map.ts
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source-map.ts
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import { SourceMapConsumer } from 'source-map-js'
import type { RawSourceMap } from 'vite-node'
import type { ErrorWithDiff, ParsedStack, Position } from '../types'
import type { Vitest } from '../node'
import { notNullish, slash } from './base'
export const lineSplitRE = /\r?\n/
export function getOriginalPos(map: RawSourceMap | null | undefined, { line, column }: Position): Promise<Position | null> {
return new Promise((resolve) => {
if (!map)
return resolve(null)
const consumer = new SourceMapConsumer(map)
const pos = consumer.originalPositionFor({ line, column })
if (pos.line != null && pos.column != null)
resolve(pos as Position)
else
resolve(null)
})
}
export async function interpretSourcePos(stackFrames: ParsedStack[], ctx: Vitest): Promise<ParsedStack[]> {
for (const frame of stackFrames) {
if ('sourcePos' in frame)
continue
const ssrTransformResult = ctx.server.moduleGraph.getModuleById(frame.file)?.ssrTransformResult
const fetchResult = ctx.vitenode?.fetchCache.get(frame.file)?.result
const map = fetchResult?.map || ssrTransformResult?.map
if (!map)
continue
const sourcePos = await getOriginalPos(map as any as RawSourceMap, frame)
if (sourcePos)
frame.sourcePos = sourcePos
}
return stackFrames
}
const stackIgnorePatterns = [
'node:internal',
'/vitest/dist/',
'/node_modules/chai/',
'/node_modules/tinypool/',
'/node_modules/tinyspy/',
]
function extractLocation(urlLike: string) {
// Fail-fast but return locations like "(native)"
if (!urlLike.includes(':'))
return [urlLike]
const regExp = /(.+?)(?::(\d+))?(?::(\d+))?$/
const parts = regExp.exec(urlLike.replace(/[()]/g, ''))
if (!parts)
return [urlLike]
return [parts[1], parts[2] || undefined, parts[3] || undefined]
}
export function parseStacktrace(e: ErrorWithDiff, full = false): ParsedStack[] {
if (!e)
return []
if (e.stacks)
return e.stacks
const stackStr = e.stack || e.stackStr || ''
const stackFrames = stackStr
.split('\n')
// Based on https://github.com/stacktracejs/error-stack-parser
// Credit to stacktracejs
.map((raw): ParsedStack | null => {
let line = raw.trim()
if (line.includes('(eval '))
line = line.replace(/eval code/g, 'eval').replace(/(\(eval at [^()]*)|(,.*$)/g, '')
let sanitizedLine = line
.replace(/^\s+/, '')
.replace(/\(eval code/g, '(')
.replace(/^.*?\s+/, '')
// capture and preserve the parenthesized location "(/foo/my bar.js:12:87)" in
// case it has spaces in it, as the string is split on \s+ later on
const location = sanitizedLine.match(/ (\(.+\)$)/)
// remove the parenthesized location from the line, if it was matched
sanitizedLine = location ? sanitizedLine.replace(location[0], '') : sanitizedLine
// if a location was matched, pass it to extractLocation() otherwise pass all sanitizedLine
// because this line doesn't have function name
const [url, lineNumber, columnNumber] = extractLocation(location ? location[1] : sanitizedLine)
let method = (location && sanitizedLine) || ''
let file = url && ['eval', '<anonymous>'].includes(url) ? undefined : url
if (!file || !lineNumber || !columnNumber)
return null
if (method.startsWith('async '))
method = method.slice(6)
if (file.startsWith('file://'))
file = file.slice(7)
if (!full && stackIgnorePatterns.some(p => file && file.includes(p)))
return null
return {
method,
file: slash(file),
line: parseInt(lineNumber),
column: parseInt(columnNumber),
}
})
.filter(notNullish)
e.stacks = stackFrames
return stackFrames
}
export function posToNumber(
source: string,
pos: number | Position,
): number {
if (typeof pos === 'number')
return pos
const lines = source.split(lineSplitRE)
const { line, column } = pos
let start = 0
if (line > lines.length)
return source.length
for (let i = 0; i < line - 1; i++)
start += lines[i].length + 1
return start + column
}
export function numberToPos(
source: string,
offset: number | Position,
): Position {
if (typeof offset !== 'number')
return offset
if (offset > source.length) {
throw new Error(
`offset is longer than source length! offset ${offset} > length ${source.length}`,
)
}
const lines = source.split(lineSplitRE)
let counted = 0
let line = 0
let column = 0
for (; line < lines.length; line++) {
const lineLength = lines[line].length + 1
if (counted + lineLength >= offset) {
column = offset - counted + 1
break
}
counted += lineLength
}
return { line: line + 1, column }
}