diff options
Diffstat (limited to 'resources/app/node_modules/source-map-support/source-map-support.js')
| -rw-r--r-- | resources/app/node_modules/source-map-support/source-map-support.js | 563 |
1 files changed, 563 insertions, 0 deletions
diff --git a/resources/app/node_modules/source-map-support/source-map-support.js b/resources/app/node_modules/source-map-support/source-map-support.js new file mode 100644 index 0000000..44e8294 --- /dev/null +++ b/resources/app/node_modules/source-map-support/source-map-support.js @@ -0,0 +1,563 @@ +var SourceMapConsumer = require('source-map').SourceMapConsumer; +var path = require('path'); + +var fs; +try { + fs = require('fs'); + if (!fs.existsSync || !fs.readFileSync) { + // fs doesn't have all methods we need + fs = null; + } +} catch (err) { + /* nop */ +} + +var bufferFrom = require('buffer-from'); + +// Only install once if called multiple times +var errorFormatterInstalled = false; +var uncaughtShimInstalled = false; + +// If true, the caches are reset before a stack trace formatting operation +var emptyCacheBetweenOperations = false; + +// Supports {browser, node, auto} +var environment = "auto"; + +// Maps a file path to a string containing the file contents +var fileContentsCache = {}; + +// Maps a file path to a source map for that file +var sourceMapCache = {}; + +// Regex for detecting source maps +var reSourceMap = /^data:application\/json[^,]+base64,/; + +// Priority list of retrieve handlers +var retrieveFileHandlers = []; +var retrieveMapHandlers = []; + +function isInBrowser() { + if (environment === "browser") + return true; + if (environment === "node") + return false; + return ((typeof window !== 'undefined') && (typeof XMLHttpRequest === 'function') && !(window.require && window.module && window.process && window.process.type === "renderer")); +} + +function hasGlobalProcessEventEmitter() { + return ((typeof process === 'object') && (process !== null) && (typeof process.on === 'function')); +} + +function handlerExec(list) { + return function(arg) { + for (var i = 0; i < list.length; i++) { + var ret = list[i](arg); + if (ret) { + return ret; + } + } + return null; + }; +} + +var retrieveFile = handlerExec(retrieveFileHandlers); + +retrieveFileHandlers.push(function(path) { + // Trim the path to make sure there is no extra whitespace. + path = path.trim(); + if (/^file:/.test(path)) { + // existsSync/readFileSync can't handle file protocol, but once stripped, it works + path = path.replace(/file:\/\/\/(\w:)?/, function(protocol, drive) { + return drive ? + '' : // file:///C:/dir/file -> C:/dir/file + '/'; // file:///root-dir/file -> /root-dir/file + }); + } + if (path in fileContentsCache) { + return fileContentsCache[path]; + } + + var contents = ''; + try { + if (!fs) { + // Use SJAX if we are in the browser + var xhr = new XMLHttpRequest(); + xhr.open('GET', path, /** async */ false); + xhr.send(null); + if (xhr.readyState === 4 && xhr.status === 200) { + contents = xhr.responseText; + } + } else if (fs.existsSync(path)) { + // Otherwise, use the filesystem + contents = fs.readFileSync(path, 'utf8'); + } + } catch (er) { + /* ignore any errors */ + } + + return fileContentsCache[path] = contents; +}); + +// Support URLs relative to a directory, but be careful about a protocol prefix +// in case we are in the browser (i.e. directories may start with "http://" or "file:///") +function supportRelativeURL(file, url) { + if (!file) return url; + var dir = path.dirname(file); + var match = /^\w+:\/\/[^\/]*/.exec(dir); + var protocol = match ? match[0] : ''; + var startPath = dir.slice(protocol.length); + if (protocol && /^\/\w\:/.test(startPath)) { + // handle file:///C:/ paths + protocol += '/'; + return protocol + path.resolve(dir.slice(protocol.length), url).replace(/\\/g, '/'); + } + return protocol + path.resolve(dir.slice(protocol.length), url); +} + +function retrieveSourceMapURL(source) { + var fileData; + + if (isInBrowser()) { + try { + var xhr = new XMLHttpRequest(); + xhr.open('GET', source, false); + xhr.send(null); + fileData = xhr.readyState === 4 ? xhr.responseText : null; + + // Support providing a sourceMappingURL via the SourceMap header + var sourceMapHeader = xhr.getResponseHeader("SourceMap") || + xhr.getResponseHeader("X-SourceMap"); + if (sourceMapHeader) { + return sourceMapHeader; + } + } catch (e) { + } + } + + // Get the URL of the source map + fileData = retrieveFile(source); + var re = /(?:\/\/[@#][ \t]+sourceMappingURL=([^\s'"]+?)[ \t]*$)|(?:\/\*[@#][ \t]+sourceMappingURL=([^\*]+?)[ \t]*(?:\*\/)[ \t]*$)/mg; + // Keep executing the search to find the *last* sourceMappingURL to avoid + // picking up sourceMappingURLs from comments, strings, etc. + var lastMatch, match; + while (match = re.exec(fileData)) lastMatch = match; + if (!lastMatch) return null; + return lastMatch[1]; +}; + +// Can be overridden by the retrieveSourceMap option to install. Takes a +// generated source filename; returns a {map, optional url} object, or null if +// there is no source map. The map field may be either a string or the parsed +// JSON object (ie, it must be a valid argument to the SourceMapConsumer +// constructor). +var retrieveSourceMap = handlerExec(retrieveMapHandlers); +retrieveMapHandlers.push(function(source) { + var sourceMappingURL = retrieveSourceMapURL(source); + if (!sourceMappingURL) return null; + + // Read the contents of the source map + var sourceMapData; + if (reSourceMap.test(sourceMappingURL)) { + // Support source map URL as a data url + var rawData = sourceMappingURL.slice(sourceMappingURL.indexOf(',') + 1); + sourceMapData = bufferFrom(rawData, "base64").toString(); + sourceMappingURL = source; + } else { + // Support source map URLs relative to the source URL + sourceMappingURL = supportRelativeURL(source, sourceMappingURL); + sourceMapData = retrieveFile(sourceMappingURL); + } + + if (!sourceMapData) { + return null; + } + + return { + url: sourceMappingURL, + map: sourceMapData + }; +}); + +function mapSourcePosition(position) { + var sourceMap = sourceMapCache[position.source]; + if (!sourceMap) { + // Call the (overrideable) retrieveSourceMap function to get the source map. + var urlAndMap = retrieveSourceMap(position.source); + if (urlAndMap) { + sourceMap = sourceMapCache[position.source] = { + url: urlAndMap.url, + map: new SourceMapConsumer(urlAndMap.map) + }; + + // Load all sources stored inline with the source map into the file cache + // to pretend like they are already loaded. They may not exist on disk. + if (sourceMap.map.sourcesContent) { + sourceMap.map.sources.forEach(function(source, i) { + var contents = sourceMap.map.sourcesContent[i]; + if (contents) { + var url = supportRelativeURL(sourceMap.url, source); + fileContentsCache[url] = contents; + } + }); + } + } else { + sourceMap = sourceMapCache[position.source] = { + url: null, + map: null + }; + } + } + + // Resolve the source URL relative to the URL of the source map + if (sourceMap && sourceMap.map && typeof sourceMap.map.originalPositionFor === 'function') { + var originalPosition = sourceMap.map.originalPositionFor(position); + + // Only return the original position if a matching line was found. If no + // matching line is found then we return position instead, which will cause + // the stack trace to print the path and line for the compiled file. It is + // better to give a precise location in the compiled file than a vague + // location in the original file. + if (originalPosition.source !== null) { + originalPosition.source = supportRelativeURL( + sourceMap.url, originalPosition.source); + return originalPosition; + } + } + + return position; +} + +// Parses code generated by FormatEvalOrigin(), a function inside V8: +// https://code.google.com/p/v8/source/browse/trunk/src/messages.js +function mapEvalOrigin(origin) { + // Most eval() calls are in this format + var match = /^eval at ([^(]+) \((.+):(\d+):(\d+)\)$/.exec(origin); + if (match) { + var position = mapSourcePosition({ + source: match[2], + line: +match[3], + column: match[4] - 1 + }); + return 'eval at ' + match[1] + ' (' + position.source + ':' + + position.line + ':' + (position.column + 1) + ')'; + } + + // Parse nested eval() calls using recursion + match = /^eval at ([^(]+) \((.+)\)$/.exec(origin); + if (match) { + return 'eval at ' + match[1] + ' (' + mapEvalOrigin(match[2]) + ')'; + } + + // Make sure we still return useful information if we didn't find anything + return origin; +} + +// This is copied almost verbatim from the V8 source code at +// https://code.google.com/p/v8/source/browse/trunk/src/messages.js. The +// implementation of wrapCallSite() used to just forward to the actual source +// code of CallSite.prototype.toString but unfortunately a new release of V8 +// did something to the prototype chain and broke the shim. The only fix I +// could find was copy/paste. +function CallSiteToString() { + var fileName; + var fileLocation = ""; + if (this.isNative()) { + fileLocation = "native"; + } else { + fileName = this.getScriptNameOrSourceURL(); + if (!fileName && this.isEval()) { + fileLocation = this.getEvalOrigin(); + fileLocation += ", "; // Expecting source position to follow. + } + + if (fileName) { + fileLocation += fileName; + } else { + // Source code does not originate from a file and is not native, but we + // can still get the source position inside the source string, e.g. in + // an eval string. + fileLocation += "<anonymous>"; + } + var lineNumber = this.getLineNumber(); + if (lineNumber != null) { + fileLocation += ":" + lineNumber; + var columnNumber = this.getColumnNumber(); + if (columnNumber) { + fileLocation += ":" + columnNumber; + } + } + } + + var line = ""; + var functionName = this.getFunctionName(); + var addSuffix = true; + var isConstructor = this.isConstructor(); + var isMethodCall = !(this.isToplevel() || isConstructor); + if (isMethodCall) { + var typeName = this.getTypeName(); + // Fixes shim to be backward compatable with Node v0 to v4 + if (typeName === "[object Object]") { + typeName = "null"; + } + var methodName = this.getMethodName(); + if (functionName) { + if (typeName && functionName.indexOf(typeName) != 0) { + line += typeName + "."; + } + line += functionName; + if (methodName && functionName.indexOf("." + methodName) != functionName.length - methodName.length - 1) { + line += " [as " + methodName + "]"; + } + } else { + line += typeName + "." + (methodName || "<anonymous>"); + } + } else if (isConstructor) { + line += "new " + (functionName || "<anonymous>"); + } else if (functionName) { + line += functionName; + } else { + line += fileLocation; + addSuffix = false; + } + if (addSuffix) { + line += " (" + fileLocation + ")"; + } + return line; +} + +function cloneCallSite(frame) { + var object = {}; + Object.getOwnPropertyNames(Object.getPrototypeOf(frame)).forEach(function(name) { + object[name] = /^(?:is|get)/.test(name) ? function() { return frame[name].call(frame); } : frame[name]; + }); + object.toString = CallSiteToString; + return object; +} + +function wrapCallSite(frame) { + if(frame.isNative()) { + return frame; + } + + // Most call sites will return the source file from getFileName(), but code + // passed to eval() ending in "//# sourceURL=..." will return the source file + // from getScriptNameOrSourceURL() instead + var source = frame.getFileName() || frame.getScriptNameOrSourceURL(); + if (source) { + var line = frame.getLineNumber(); + var column = frame.getColumnNumber() - 1; + + // Fix position in Node where some (internal) code is prepended. + // See https://github.com/evanw/node-source-map-support/issues/36 + var headerLength = 62; + if (line === 1 && column > headerLength && !isInBrowser() && !frame.isEval()) { + column -= headerLength; + } + + var position = mapSourcePosition({ + source: source, + line: line, + column: column + }); + frame = cloneCallSite(frame); + var originalFunctionName = frame.getFunctionName; + frame.getFunctionName = function() { return position.name || originalFunctionName(); }; + frame.getFileName = function() { return position.source; }; + frame.getLineNumber = function() { return position.line; }; + frame.getColumnNumber = function() { return position.column + 1; }; + frame.getScriptNameOrSourceURL = function() { return position.source; }; + return frame; + } + + // Code called using eval() needs special handling + var origin = frame.isEval() && frame.getEvalOrigin(); + if (origin) { + origin = mapEvalOrigin(origin); + frame = cloneCallSite(frame); + frame.getEvalOrigin = function() { return origin; }; + return frame; + } + + // If we get here then we were unable to change the source position + return frame; +} + +// This function is part of the V8 stack trace API, for more info see: +// http://code.google.com/p/v8/wiki/JavaScriptStackTraceApi +function prepareStackTrace(error, stack) { + if (emptyCacheBetweenOperations) { + fileContentsCache = {}; + sourceMapCache = {}; + } + + return error + stack.map(function(frame) { + return '\n at ' + wrapCallSite(frame); + }).join(''); +} + +// Generate position and snippet of original source with pointer +function getErrorSource(error) { + var match = /\n at [^(]+ \((.*):(\d+):(\d+)\)/.exec(error.stack); + if (match) { + var source = match[1]; + var line = +match[2]; + var column = +match[3]; + + // Support the inline sourceContents inside the source map + var contents = fileContentsCache[source]; + + // Support files on disk + if (!contents && fs && fs.existsSync(source)) { + try { + contents = fs.readFileSync(source, 'utf8'); + } catch (er) { + contents = ''; + } + } + + // Format the line from the original source code like node does + if (contents) { + var code = contents.split(/(?:\r\n|\r|\n)/)[line - 1]; + if (code) { + return source + ':' + line + '\n' + code + '\n' + + new Array(column).join(' ') + '^'; + } + } + } + return null; +} + +function printErrorAndExit (error) { + var source = getErrorSource(error); + + // Ensure error is printed synchronously and not truncated + if (process.stderr._handle && process.stderr._handle.setBlocking) { + process.stderr._handle.setBlocking(true); + } + + if (source) { + console.error(); + console.error(source); + } + + console.error(error.stack); + process.exit(1); +} + +function shimEmitUncaughtException () { + var origEmit = process.emit; + + process.emit = function (type) { + if (type === 'uncaughtException') { + var hasStack = (arguments[1] && arguments[1].stack); + var hasListeners = (this.listeners(type).length > 0); + + if (hasStack && !hasListeners) { + return printErrorAndExit(arguments[1]); + } + } + + return origEmit.apply(this, arguments); + }; +} + +var originalRetrieveFileHandlers = retrieveFileHandlers.slice(0); +var originalRetrieveMapHandlers = retrieveMapHandlers.slice(0); + +exports.wrapCallSite = wrapCallSite; +exports.getErrorSource = getErrorSource; +exports.mapSourcePosition = mapSourcePosition; +exports.retrieveSourceMap = retrieveSourceMap; + +exports.install = function(options) { + options = options || {}; + + if (options.environment) { + environment = options.environment; + if (["node", "browser", "auto"].indexOf(environment) === -1) { + throw new Error("environment " + environment + " was unknown. Available options are {auto, browser, node}") + } + } + + // Allow sources to be found by methods other than reading the files + // directly from disk. + if (options.retrieveFile) { + if (options.overrideRetrieveFile) { + retrieveFileHandlers.length = 0; + } + + retrieveFileHandlers.unshift(options.retrieveFile); + } + + // Allow source maps to be found by methods other than reading the files + // directly from disk. + if (options.retrieveSourceMap) { + if (options.overrideRetrieveSourceMap) { + retrieveMapHandlers.length = 0; + } + + retrieveMapHandlers.unshift(options.retrieveSourceMap); + } + + // Support runtime transpilers that include inline source maps + if (options.hookRequire && !isInBrowser()) { + var Module; + try { + Module = require('module'); + } catch (err) { + // NOP: Loading in catch block to convert webpack error to warning. + } + var $compile = Module.prototype._compile; + + if (!$compile.__sourceMapSupport) { + Module.prototype._compile = function(content, filename) { + fileContentsCache[filename] = content; + sourceMapCache[filename] = undefined; + return $compile.call(this, content, filename); + }; + + Module.prototype._compile.__sourceMapSupport = true; + } + } + + // Configure options + if (!emptyCacheBetweenOperations) { + emptyCacheBetweenOperations = 'emptyCacheBetweenOperations' in options ? + options.emptyCacheBetweenOperations : false; + } + + // Install the error reformatter + if (!errorFormatterInstalled) { + errorFormatterInstalled = true; + Error.prepareStackTrace = prepareStackTrace; + } + + if (!uncaughtShimInstalled) { + var installHandler = 'handleUncaughtExceptions' in options ? + options.handleUncaughtExceptions : true; + + // Provide the option to not install the uncaught exception handler. This is + // to support other uncaught exception handlers (in test frameworks, for + // example). If this handler is not installed and there are no other uncaught + // exception handlers, uncaught exceptions will be caught by node's built-in + // exception handler and the process will still be terminated. However, the + // generated JavaScript code will be shown above the stack trace instead of + // the original source code. + if (installHandler && hasGlobalProcessEventEmitter()) { + uncaughtShimInstalled = true; + shimEmitUncaughtException(); + } + } +}; + +exports.resetRetrieveHandlers = function() { + retrieveFileHandlers.length = 0; + retrieveMapHandlers.length = 0; + + retrieveFileHandlers = originalRetrieveFileHandlers.slice(0); + retrieveMapHandlers = originalRetrieveMapHandlers.slice(0); + + retrieveSourceMap = handlerExec(retrieveMapHandlers); + retrieveFile = handlerExec(retrieveFileHandlers); +} |