next
Version:
The React Framework
151 lines (150 loc) • 6.68 kB
JavaScript
import { badRequest, findSourcePackage, getOriginalCodeFrame, internalServerError, json, jsonString, noContent } from './shared';
import fs, { constants as FS } from 'fs/promises';
import path from 'path';
import url from 'url';
import { launchEditor } from '../internal/helpers/launchEditor';
import { getSourceMapFromFile } from '../internal/helpers/get-source-map-from-file';
import { findSourceMap } from 'node:module';
const currentSourcesByFile = new Map();
export async function batchedTraceSource(project, frame) {
const file = frame.file ? decodeURIComponent(frame.file) : undefined;
if (!file) return;
const sourceFrame = await project.traceSource(frame);
if (!sourceFrame) return;
let source = null;
// Don't look up source for node_modules or internals. These can often be large bundled files.
if (sourceFrame.file && !(sourceFrame.file.includes('node_modules') || sourceFrame.isInternal)) {
let sourcePromise = currentSourcesByFile.get(sourceFrame.file);
if (!sourcePromise) {
sourcePromise = project.getSourceForAsset(sourceFrame.file);
currentSourcesByFile.set(sourceFrame.file, sourcePromise);
setTimeout(()=>{
// Cache file reads for 100ms, as frames will often reference the same
// files and can be large.
currentSourcesByFile.delete(sourceFrame.file);
}, 100);
}
source = await sourcePromise;
}
var _sourceFrame_line, _sourceFrame_column, _sourceFrame_methodName, _ref;
return {
frame: {
file: sourceFrame.file,
lineNumber: (_sourceFrame_line = sourceFrame.line) != null ? _sourceFrame_line : 0,
column: (_sourceFrame_column = sourceFrame.column) != null ? _sourceFrame_column : 0,
methodName: (_ref = (_sourceFrame_methodName = sourceFrame.methodName) != null ? _sourceFrame_methodName : frame.methodName) != null ? _ref : '<unknown>',
arguments: []
},
source
};
}
function createStackFrame(searchParams) {
const fileParam = searchParams.get('file');
if (!fileParam) {
return undefined;
}
// rsc://React/Server/file://<filename>?42 => file://<filename>
const file = fileParam.replace(/^rsc:\/\/React\/[^/]+\//, '').replace(/\?\d+$/, '');
var _searchParams_get, _searchParams_get1, _searchParams_get2;
return {
file,
methodName: (_searchParams_get = searchParams.get('methodName')) != null ? _searchParams_get : '<unknown>',
line: parseInt((_searchParams_get1 = searchParams.get('lineNumber')) != null ? _searchParams_get1 : '0', 10) || 0,
column: parseInt((_searchParams_get2 = searchParams.get('column')) != null ? _searchParams_get2 : '0', 10) || 0,
isServer: searchParams.get('isServer') === 'true'
};
}
export async function createOriginalStackFrame(project, frame) {
const traced = await batchedTraceSource(project, frame);
if (!traced) {
const sourcePackage = findSourcePackage(frame);
if (sourcePackage) return {
sourcePackage
};
return null;
}
return {
originalStackFrame: traced.frame,
originalCodeFrame: getOriginalCodeFrame(traced.frame, traced.source),
sourcePackage: findSourcePackage(traced.frame)
};
}
export function getOverlayMiddleware(project) {
return async function(req, res, next) {
const { pathname, searchParams } = new URL(req.url, 'http://n');
if (pathname === '/__nextjs_original-stack-frame') {
const frame = createStackFrame(searchParams);
if (!frame) return badRequest(res);
let originalStackFrame;
try {
originalStackFrame = await createOriginalStackFrame(project, frame);
} catch (e) {
return internalServerError(res, e.message);
}
if (!originalStackFrame) {
res.statusCode = 404;
res.end('Unable to resolve sourcemap');
return;
}
return json(res, originalStackFrame);
} else if (pathname === '/__nextjs_launch-editor') {
const frame = createStackFrame(searchParams);
if (!frame) return badRequest(res);
const fileExists = await fs.access(frame.file, FS.F_OK).then(()=>true, ()=>false);
if (!fileExists) return noContent(res);
try {
var _frame_line, _frame_column;
launchEditor(frame.file, (_frame_line = frame.line) != null ? _frame_line : 1, (_frame_column = frame.column) != null ? _frame_column : 1);
} catch (err) {
console.log('Failed to launch editor:', err);
return internalServerError(res);
}
noContent(res);
}
return next();
};
}
export function getSourceMapMiddleware(project, options) {
return async function(req, res, next) {
const { pathname, searchParams } = new URL(req.url, 'http://n');
if (pathname !== '/__nextjs_source-map') {
return next();
}
let filename = searchParams.get('filename');
if (!filename) {
return badRequest(res);
}
if (filename.startsWith('webpack://') || filename.startsWith('webpack-internal:///')) {
const sourceMap = findSourceMap(filename);
if (sourceMap) {
return json(res, sourceMap.payload);
}
return noContent(res);
}
try {
const { assetPrefix, distDir } = options;
if (filename.startsWith("" + assetPrefix + "/_next/static")) {
filename = path.join(distDir, filename.replace(new RegExp("^" + assetPrefix + "/_next/"), ''));
}
// Turbopack chunk filenames might be URL-encoded.
filename = decodeURI(filename);
if (path.isAbsolute(filename)) {
filename = url.pathToFileURL(filename).href;
}
const sourceMapString = await project.getSourceMap(filename);
if (sourceMapString) {
return jsonString(res, sourceMapString);
}
if (filename.startsWith('file:')) {
const sourceMap = await getSourceMapFromFile(filename);
if (sourceMap) {
return json(res, sourceMap);
}
}
} catch (error) {
console.error('Failed to get source map:', error);
}
noContent(res);
};
}
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