1 files changed, 326 insertions, 0 deletions
diff --git a/node_modules/stack-utils/index.js b/node_modules/stack-utils/index.js
new file mode 100644
index 000000000..feb5bd42e
--- /dev/null
+++ b/node_modules/stack-utils/index.js
@@ -0,0 +1,326 @@
+module.exports = StackUtils;
+
+function StackUtils(opts) {
+  if (!(this instanceof StackUtils)) {
+    throw new Error('StackUtils constructor must be called with new');
+  }
+  opts = opts || {};
+  this._cwd = (opts.cwd || process.cwd()).replace(/\\/g, '/');
+  this._internals = opts.internals || [];
+  this._wrapCallSite = opts.wrapCallSite || false;
+}
+
+module.exports.nodeInternals = nodeInternals;
+
+function nodeInternals() {
+  if (!module.exports.natives) {
+    module.exports.natives = Object.keys(process.binding('natives'));
+    module.exports.natives.push('bootstrap_node', 'node');
+  }
+
+  return module.exports.natives.map(function (n) {
+    return new RegExp('\\(' + n + '\\.js:\\d+:\\d+\\)$');
+  }).concat([
+    /\s*at (bootstrap_)?node\.js:\d+:\d+?$/,
+    /\/\.node-spawn-wrap-\w+-\w+\/node:\d+:\d+\)?$/
+  ]);
+}
+
+StackUtils.prototype.clean = function (stack) {
+  if (!Array.isArray(stack)) {
+    stack = stack.split('\n');
+  }
+
+  if (!(/^\s*at /.test(stack[0])) &&
+    (/^\s*at /.test(stack[1]))) {
+    stack = stack.slice(1);
+  }
+
+  var outdent = false;
+  var lastNonAtLine = null;
+  var result = [];
+
+  stack.forEach(function (st) {
+    st = st.replace(/\\/g, '/');
+    var isInternal = this._internals.some(function (internal) {
+      return internal.test(st);
+    });
+
+    if (isInternal) {
+      return null;
+    }
+
+    var isAtLine = /^\s*at /.test(st);
+
+    if (outdent) {
+      st = st.replace(/\s+$/, '').replace(/^(\s+)at /, '$1');
+    } else {
+      st = st.trim();
+      if (isAtLine) {
+        st = st.substring(3);
+      }
+    }
+
+    st = st.replace(this._cwd + '/', '');
+
+    if (st) {
+      if (isAtLine) {
+        if (lastNonAtLine) {
+          result.push(lastNonAtLine);
+          lastNonAtLine = null;
+        }
+        result.push(st);
+      } else {
+        outdent = true;
+        lastNonAtLine = st;
+      }
+    }
+  }, this);
+
+  stack = result.join('\n').trim();
+
+  if (stack) {
+    return stack + '\n';
+  }
+  return '';
+};
+
+StackUtils.prototype.captureString = function (limit, fn) {
+  if (typeof limit === 'function') {
+    fn = limit;
+    limit = Infinity;
+  }
+  if (!fn) {
+    fn = this.captureString;
+  }
+
+  var limitBefore = Error.stackTraceLimit;
+  if (limit) {
+    Error.stackTraceLimit = limit;
+  }
+
+  var obj = {};
+
+  Error.captureStackTrace(obj, fn);
+  var stack = obj.stack;
+  Error.stackTraceLimit = limitBefore;
+
+  return this.clean(stack);
+};
+
+StackUtils.prototype.capture = function (limit, fn) {
+  if (typeof limit === 'function') {
+    fn = limit;
+    limit = Infinity;
+  }
+  if (!fn) {
+    fn = this.capture;
+  }
+  var prepBefore = Error.prepareStackTrace;
+  var limitBefore = Error.stackTraceLimit;
+  var wrapCallSite = this._wrapCallSite;
+
+  Error.prepareStackTrace = function (obj, site) {
+    if (wrapCallSite) {
+      return site.map(wrapCallSite);
+    }
+    return site;
+  };
+
+  if (limit) {
+    Error.stackTraceLimit = limit;
+  }
+
+  var obj = {};
+  Error.captureStackTrace(obj, fn);
+  var stack = obj.stack;
+  Error.prepareStackTrace = prepBefore;
+  Error.stackTraceLimit = limitBefore;
+
+  return stack;
+};
+
+StackUtils.prototype.at = function at(fn) {
+  if (!fn) {
+    fn = at;
+  }
+
+  var site = this.capture(1, fn)[0];
+
+  if (!site) {
+    return {};
+  }
+
+  var res = {
+    line: site.getLineNumber(),
+    column: site.getColumnNumber()
+  };
+
+  this._setFile(res, site.getFileName());
+
+  if (site.isConstructor()) {
+    res.constructor = true;
+  }
+
+  if (site.isEval()) {
+    res.evalOrigin = site.getEvalOrigin();
+  }
+
+  if (site.isNative()) {
+    res.native = true;
+  }
+
+  var typename = null;
+  try {
+    typename = site.getTypeName();
+  } catch (er) {}
+
+  if (typename &&
+    typename !== 'Object' &&
+    typename !== '[object Object]') {
+    res.type = typename;
+  }
+
+  var fname = site.getFunctionName();
+  if (fname) {
+    res.function = fname;
+  }
+
+  var meth = site.getMethodName();
+  if (meth && fname !== meth) {
+    res.method = meth;
+  }
+
+  return res;
+};
+
+StackUtils.prototype._setFile = function (result, filename) {
+  if (filename) {
+    filename = filename.replace(/\\/g, '/');
+    if ((filename.indexOf(this._cwd + '/') === 0)) {
+      filename = filename.substr(this._cwd.length + 1);
+    }
+    result.file = filename;
+  }
+};
+
+var re = new RegExp(
+  '^' +
+    // Sometimes we strip out the '    at' because it's noisy
+  '(?:\\s*at )?' +
+    // $1 = ctor if 'new'
+  '(?:(new) )?' +
+    // $2 = function name (can be literally anything)
+    // May contain method at the end as [as xyz]
+  '(?:(.*?) \\()?' +
+    // (eval at <anonymous> (file.js:1:1),
+    // $3 = eval origin
+    // $4:$5:$6 are eval file/line/col, but not normally reported
+  '(?:eval at ([^ ]+) \\((.+?):(\\d+):(\\d+)\\), )?' +
+    // file:line:col
+    // $7:$8:$9
+    // $10 = 'native' if native
+  '(?:(.+?):(\\d+):(\\d+)|(native))' +
+    // maybe close the paren, then end
+    // if $11 is ), then we only allow balanced parens in the filename
+    // any imbalance is placed on the fname.  This is a heuristic, and
+    // bound to be incorrect in some edge cases.  The bet is that
+    // having weird characters in method names is more common than
+    // having weird characters in filenames, which seems reasonable.
+  '(\\)?)$'
+);
+
+var methodRe = /^(.*?) \[as (.*?)\]$/;
+
+StackUtils.prototype.parseLine = function parseLine(line) {
+  var match = line && line.match(re);
+  if (!match) {
+    return null;
+  }
+
+  var ctor = match[1] === 'new';
+  var fname = match[2];
+  var evalOrigin = match[3];
+  var evalFile = match[4];
+  var evalLine = Number(match[5]);
+  var evalCol = Number(match[6]);
+  var file = match[7];
+  var lnum = match[8];
+  var col = match[9];
+  var native = match[10] === 'native';
+  var closeParen = match[11] === ')';
+
+  var res = {};
+
+  if (lnum) {
+    res.line = Number(lnum);
+  }
+
+  if (col) {
+    res.column = Number(col);
+  }
+
+  if (closeParen && file) {
+    // make sure parens are balanced
+    // if we have a file like "asdf) [as foo] (xyz.js", then odds are
+    // that the fname should be += " (asdf) [as foo]" and the file
+    // should be just "xyz.js"
+    // walk backwards from the end to find the last unbalanced (
+    var closes = 0;
+    for (var i = file.length - 1; i > 0; i--) {
+      if (file.charAt(i) === ')') {
+        closes ++;
+      } else if (file.charAt(i) === '(' && file.charAt(i - 1) === ' ') {
+        closes --;
+        if (closes === -1 && file.charAt(i - 1) === ' ') {
+          var before = file.substr(0, i - 1);
+          var after = file.substr(i + 1);
+          file = after;
+          fname += ' (' + before;
+          break;
+        }
+      }
+    }
+  }
+
+  if (fname) {
+    var methodMatch = fname.match(methodRe);
+    if (methodMatch) {
+      fname = methodMatch[1];
+      var meth = methodMatch[2];
+    }
+  }
+
+  this._setFile(res, file);
+
+  if (ctor) {
+    res.constructor = true;
+  }
+
+  if (evalOrigin) {
+    res.evalOrigin = evalOrigin;
+    res.evalLine = evalLine;
+    res.evalColumn = evalCol;
+    res.evalFile = evalFile && evalFile.replace(/\\/g, '/');
+  }
+
+  if (native) {
+    res.native = true;
+  }
+
+  if (fname) {
+    res.function = fname;
+  }
+
+  if (meth && fname !== meth) {
+    res.method = meth;
+  }
+
+  return res;
+};
+
+var bound = new StackUtils();
+
+Object.keys(StackUtils.prototype).forEach(function (key) {
+  StackUtils[key] = bound[key].bind(bound);
+});