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fix(error-logging): rollup errors weren't displaying id and codeframe #16540

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May 9, 2024
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53 changes: 47 additions & 6 deletions packages/vite/src/node/build.ts
Original file line number Diff line number Diff line change
Expand Up @@ -541,23 +541,64 @@ export async function build(
},
}

const mergeRollupError = (e: RollupError) => {
/**
* The stack string usually contains a copy of the message at the start of the stack.
* If the stack starts with the message, we remove it and just return the stack trace
* portion. Otherwise the original stack trace is used.
*/
function extractStack(e: RollupError) {
const { stack, name = 'Error', message } = e

// If we don't have a stack, not much we can do.
if (!stack) {
return stack
}

const expectedPrefix = `${name}: ${message}\n`
if (stack.startsWith(expectedPrefix)) {
return stack.slice(expectedPrefix.length)
}

return stack
}

/**
* Esbuild code frames have newlines at the start and end of the frame, rollup doesn't
* This function normalizes the frame to match the esbuild format which has more pleasing padding
*/
const normalizeCodeFrame = (frame: string) => {
const trimmedPadding = frame.replace(/^\n|\n$/g, '')
return `\n${trimmedPadding}\n`
}

const enhanceRollupError = (e: RollupError) => {
const stackOnly = extractStack(e)

let msg = colors.red((e.plugin ? `[${e.plugin}] ` : '') + e.message)
if (e.id) {
msg += `\nfile: ${colors.cyan(
e.id + (e.loc ? `:${e.loc.line}:${e.loc.column}` : ''),
)}`
}
if (e.frame) {
msg += `\n` + colors.yellow(e.frame)
msg += `\n` + colors.yellow(normalizeCodeFrame(e.frame))
}

e.message = msg

// We are rebuilding the stack trace to include the more detailed message at the top.
// Previously this code was relying on mutating e.message changing the generated stack
// when it was accessed, but we don't have any guarantees that the error we are working
// with hasn't already had its stack accessed before we get here.
if (stackOnly !== undefined) {
e.stack = `${e.message}\n${stackOnly}`
}
return msg
}

const outputBuildError = (e: RollupError) => {
const msg = mergeRollupError(e)
enhanceRollupError(e)
clearLine()
config.logger.error(msg, { error: e })
config.logger.error(e.message, { error: e })
}

let bundle: RollupBuild | undefined
Expand Down Expand Up @@ -711,7 +752,7 @@ export async function build(
)
return Array.isArray(outputs) ? res : res[0]
} catch (e) {
e.message = mergeRollupError(e)
enhanceRollupError(e)
clearLine()
if (startTime) {
config.logger.error(
Expand Down