Initial commit (by create-cloudflare CLI)

16 files changed, 1271 insertions, 0 deletions

diff --git a/node_modules/stacktracey/.eslintrc b/node_modules/stacktracey/.eslintrc
new file mode 100644
index 0000000..955b07d
--- /dev/null
+++ b/node_modules/stacktracey/.eslintrc
@@ -0,0 +1,6 @@
+{
+  "parserOptions": {
+    "ecmaVersion": 6,
+    "sourceType": "script"
+  }
+}
\ No newline at end of file
diff --git a/node_modules/stacktracey/.gitattributes b/node_modules/stacktracey/.gitattributes
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/node_modules/stacktracey/.gitattributes
diff --git a/node_modules/stacktracey/.travis.yml b/node_modules/stacktracey/.travis.yml
new file mode 100644
index 0000000..90f2741
--- /dev/null
+++ b/node_modules/stacktracey/.travis.yml
@@ -0,0 +1,24 @@
+language: node_js
+node_js:
+- '8'
+script:
+- set -e
+- npm run test
+- npm run coveralls
+# after_success:
+# - git config --global user.email "travis@travis-ci.org"
+# - git config --global user.name "Travis CI"
+# - npm config set git-tag-version=false
+# - NPM_VERSION=$(npm version patch)
+# - git commit -a -m "${NPM_VERSION:1}" -m "[ci skip]"
+# - git remote remove origin
+# - git remote add origin https://${GITHUB_TOKEN}@github.com/xpl/stacktracey.git
+# - git push origin HEAD:master
+# deploy:
+#   provider: npm
+#   email: rocket.mind@gmail.com
+#   api_key:
+#     secure: 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
+env:
+  global:
+    secure: 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
diff --git a/node_modules/stacktracey/CHANGELOG.md b/node_modules/stacktracey/CHANGELOG.md
new file mode 100644
index 0000000..411d94f
--- /dev/null
+++ b/node_modules/stacktracey/CHANGELOG.md
@@ -0,0 +1,16 @@
+# Version 2.0 (with breaking changes)
+
+- Added asynchronous methods, `withSourcesAsync` and `cleanAsync`.
+
+- All property accessors like `.clean` are now methods (e.g. `.clean ()`) for consistency reasons
+
+- `.pretty` now `.asTable (opts?: { maxColumnWidths:? { callee, file, sourceLine } })`
+
+    - Also, it does not call `withSources` automatically — you need to call it explicitly.
+
+- It is no longer `extends Array` due to non-working user subclassing with Babel ES5
+    - Use `.items` to access original array
+
+- No static methods and properties (except public `.locationsEqual` helper)
+    - `.isThirdParty` is now just an overrideable method
+    - `.maxColumnWidths` is an overrideable method + a configuration option passed to `asTable ()` method
diff --git a/node_modules/stacktracey/LICENSE b/node_modules/stacktracey/LICENSE
new file mode 100644
index 0000000..68a49da
--- /dev/null
+++ b/node_modules/stacktracey/LICENSE
@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>
diff --git a/node_modules/stacktracey/README.md b/node_modules/stacktracey/README.md
new file mode 100644
index 0000000..50877cf
--- /dev/null
+++ b/node_modules/stacktracey/README.md
@@ -0,0 +1,281 @@
+# StackTracey
+
+[![Build Status](https://travis-ci.org/xpl/stacktracey.svg?branch=master)](https://travis-ci.org/xpl/stacktracey) [![Windows Build Status](https://ci.appveyor.com/api/projects/status/cvuygb8grrvm1sdm?svg=true)](https://ci.appveyor.com/project/xpl/stacktracey) [![Coverage Status](https://coveralls.io/repos/github/xpl/stacktracey/badge.svg?branch=master)](https://coveralls.io/github/xpl/stacktracey) [![NPM](https://img.shields.io/npm/v/stacktracey.svg)](http://npmjs.com/package/stacktracey) [![Scrutinizer Code Quality](https://img.shields.io/scrutinizer/g/xpl/stacktracey.svg)](https://scrutinizer-ci.com/g/xpl/stacktracey/?branch=master) [![dependencies Status](https://david-dm.org/xpl/stacktracey/status.svg)](https://david-dm.org/xpl/stacktracey)
+
+Parses call stacks. Reads sources. Clean & filtered output. Sourcemaps. Node & browsers.
+
+## Why
+
+- [x] Simple
+- [x] Works in Node and browsers, \*nix and Windows
+- [x] Allows hiding library calls / ad-hoc exclusion (via `// @hide` marker)
+- [x] Provides source text for call locations
+- [x] Fetches sources (via [get-source](https://github.com/xpl/get-source))
+- [x] Supports both asynchronous and synchronous interfaces (works even in browsers)
+- [x] Full sourcemap support
+- [x] Extracts useful information from `SyntaxError` instances
+- [x] [Pretty printing](https://github.com/xpl/stacktracey/#pretty-printing)
+      <img width="898" alt="screen shot 2017-09-27 at 16 53 46" src="https://user-images.githubusercontent.com/1707/30917345-79899004-a3a4-11e7-8d48-e217e2d5e2cd.png">
+
+## What For
+
+- [Error overlay UIs](https://github.com/xpl/panic-overlay/#how-it-looks) for easier front-end development
+- [Better error reporting](https://github.com/xpl/ololog#pretty-printing-error-instances) for Node projects
+- [Advanced logging](https://github.com/xpl/ololog#displaying-call-location) (displaying call locations)
+- Assertion printing
+
+## How To
+
+```bash
+npm install stacktracey
+```
+
+```javascript
+import StackTracey from 'stacktracey'
+```
+
+Captures the current call stack:
+
+```javascript
+stack = new StackTracey ()            // captures the current call stack
+```
+
+Parses stacks from an `Error` object:
+
+```javascript
+stack = new StackTracey (error)
+stack = new StackTracey (error.stack) // ...or from raw string
+```
+
+Stores parsed data in `.items`:
+
+```javascript
+stack.items.length // num entries
+stack.items[0]     // top
+```
+
+...where each item exposes:
+
+```javascript
+{
+    beforeParse:  <original text>,
+    callee:       <function name>,
+    calleeShort:  <shortened function name>,
+    file:         <full path to file>,       // e.g. /Users/john/my_project/node_modules/foobar/main.js
+    fileRelative: <relative path to file>,   // e.g. node_modules/foobar/main.js
+    fileShort:    <short path to file>,      // e.g. foobar/main.js
+    fileName:     <file name>,               // e.g. main.js
+    line:         <line number>,             // starts from 1
+    column:       <column number>,           // starts from 1
+
+    index:          /* true if occured in HTML file at index page    */,
+    native:         /* true if occured in native browser code        */,
+    thirdParty:     /* true if occured in library code               */,
+    hide:           /* true if marked as hidden by "// @hide" tag    */,
+    syntaxError:    /* true if generated from a SyntaxError instance */
+}
+```
+
+Accessing sources (**synchronously**, use with caution in browsers):
+
+```javascript
+stack = stack.withSources () // returns a copy of stack with all items supplied with sources
+top   = stack.items[0]       // top item
+```
+
+Accessing sources (**asynchronously**, preferred method in browsers):
+
+```javascript
+stack = await stack.withSourcesAsync () // returns a copy of stack with all items supplied with sources
+top   = stack.items[0]                  // top item
+```
+
+...or:
+
+```javascript
+top = stack.withSourceAt (0) // supplies source for an individiual item (by index)
+```
+```javascript
+top = await stack.withSourceAsyncAt (0) // supplies source for an individiual item (by index)
+```
+
+...or:
+
+```javascript
+top = stack.withSource (stack.items[0]) // supplies source for an individiual item
+```
+```javascript
+top = await stack.withSourceAsync (stack.items[0]) // supplies source for an individiual item
+```
+
+The returned items contain the following additional fields (already mapped through sourcemaps):
+
+```javascript
+{
+    ... // all the previously described fields
+
+    line:       <original line number>,
+    column:     <original column number>,
+    sourceFile: <original source file object>,
+    sourceLine: <original source line text>
+}
+```
+
+To learn about the `sourceFile` object, read the [get-source](https://github.com/xpl/get-source#get-source) docs.
+
+## Cleaning Output
+
+Synchronously (use with caution in browsers):
+
+```javascript
+stack = stack.clean ()
+```
+
+...or (asynchronously):
+
+```javascript
+stack = await stack.cleanAsync ()
+```
+
+It does the following:
+
+1. Reads sources (if available)
+2. Excludes locations marked with the `isThirdParty` flag (library calls)
+3. Excludes locations marked with a `// @hide` comment (user defined exclusion)
+4. Merges repeated lines (via the `.mergeRepeatedLines`)
+
+You can customize its behavior by overriding the `isClean (entry, index)` predicate.
+
+## Custom `isThirdParty` Predicate
+
+You can override the `isThirdParty` behavior by subclassing `StackTracey`:
+
+```javascript
+class MyStackTracey extends StackTracey {
+
+    isThirdParty (path, externalDomain) {    // you can use externalDomain to include traces from libs from other domains
+        return (super.isThirdParty (path)    // include default behavior
+                || path.includes ('my-lib')) // paths including 'my-lib' will be marked as thirdParty
+                && !path.includes ('jquery') // jquery paths won't be marked as thirdParty
+    }
+}
+
+...
+
+const stack = new MyStackTracey (error).withSources ()
+```
+
+## Pretty Printing
+
+```javascript
+const prettyPrintedString = new StackTracey (error).withSources ().asTable ()
+```
+```javascript
+const prettyPrintedString = (await new StackTracey (error).withSourcesAsync ()).asTable () // asynchronous version
+```
+
+...or (for pretty printing cleaned output):
+
+```javascript
+const prettyPrintedString = new StackTracey (error).clean ().asTable ()
+```
+```javascript
+const prettyPrintedString = (await new StackTracey (error).cleanAsync ()).asTable () // asynchronous version
+```
+
+It produces a nice compact table layout (thanks to [`as-table`](https://github.com/xpl/as-table)), supplied with source lines (if available):
+
+```
+at shouldBeVisibleInStackTrace     test.js:25                 const shouldBeVisibleInStackTrace = () => new StackTracey ()
+at it                              test.js:100                const stack = shouldBeVisibleInStackTrace ()                
+at callFn                          mocha/lib/runnable.js:326  var result = fn.call(ctx);                                  
+at run                             mocha/lib/runnable.js:319  callFn(this.fn);                                            
+at runTest                         mocha/lib/runner.js:422    test.run(fn);                                               
+at                                 mocha/lib/runner.js:528    self.runTest(function(err) {                                
+at next                            mocha/lib/runner.js:342    return fn();                                                
+at                                 mocha/lib/runner.js:352    next(suites.pop());                                         
+at next                            mocha/lib/runner.js:284    return fn();                                                
+at <anonymous>                     mocha/lib/runner.js:320    next(0);                  
+```
+
+If you find your pretty printed tables undesirably trimmed (or maybe too long to fit in the line), you can provide custom column widths when calling `asTable` (...or, alternatively, by overriding `maxColumnWidths ()` method):
+
+```javascript
+stack.asTable ({
+    callee:     30,
+    file:       60,
+    sourceLine: 80
+})
+```
+
+## Using As A Custom Exception Printer In Node
+
+You can even replace the default NodeJS exception printer with this! This is how you can do it:
+
+```javascript
+process.on ('uncaughtException',  e => { /* print the stack here */ })
+process.on ('unhandledRejection', e => { /* print the stack here */ })
+```
+
+But the most simple way to achieve that is to use the [`ololog`](https://github.com/xpl/ololog/blob/master/README.md) library (that is built upon StackTracey and several other handy libraries coded by me). Check it out, [it's pretty awesome and will blow your brains out](https://github.com/xpl/ololog/blob/master/README.md) :)
+
+```javascript
+const log = require ('ololog').handleNodeErrors ()
+
+// you can also print Errors by simply passing them to the log() function
+```
+
+<img width="1066" alt="screen shot 2018-05-11 at 19 51 03" src="https://user-images.githubusercontent.com/1707/39936393-ffd529c2-5554-11e8-80f8-eff1229017c4.png">
+ 
+## Parsing `SyntaxError` instances
+
+For example, when trying to `require` a file named `test_files/syntax_error.js`:
+
+```javascript
+// next line contains a syntax error (not a valid JavaScript)
+foo->bar ()
+```
+
+...the pretty printed call stack for the error thrown would be something like:
+
+```
+at (syntax error)                  test_files/syntax_error.js:2  foo->bar ()
+at it                              test.js:184                   try { require ('./test_files/syntax_error.js') }
+at runCallback                     timers.js:781
+at tryOnImmediate                  timers.js:743
+at processImmediate [as _immediat  timers.js:714
+```
+
+...where the first line is generated from parsing the raw output from the `util.inspect` call in Node. Unfortunately, this won't work in older versions of Node (v4 and below) as these versions can't provide any meaningful information for a `SyntaxError` instance.
+
+## Array Methods
+
+All StackTracey instances expose `map`, `filter`, `concat` and `slice` methods. These methods will return mapped, filtered, joined, reversed and sliced `StackTracey` instances, respectively:
+
+```javascript
+s = new StackTracey ().slice (1).filter (x => !x.thirdParty) // current stack shifted by 1 and cleaned from library calls
+
+s instanceof StackTracey // true
+```
+
+## Extra Stuff
+
+You can compare two locations via this predicate (tests `file`, `line` and `column` for equality):
+
+```javascript
+StackTracey.locationsEqual (a, b)
+```
+
+To force-reload the sources, you can invalidate the global source cache:
+
+```javascript
+StackTracey.resetCache ()
+```
+
+## Projects That Use StackTracey
+
+- [Ololog](https://github.com/xpl/ololog) — a better `console.log` for the log-driven debugging junkies!
+- [CCXT](https://github.com/ccxt-dev/ccxt) — a cryptocurrency trading library that supports 130+ exchanges
+- [pnpm](https://github.com/pnpm/pnpm) — a fast, disk space efficient package manager (faster than npm and Yarn!)
+- [panic-overlay](https://github.com/xpl/panic-overlay/) — a lightweight standalone alternative to `react-error-overlay`
+
diff --git a/node_modules/stacktracey/appveyor.yml b/node_modules/stacktracey/appveyor.yml
new file mode 100644
index 0000000..0209ff1
--- /dev/null
+++ b/node_modules/stacktracey/appveyor.yml
@@ -0,0 +1,19 @@
+environment:
+  matrix:
+    - nodejs_version: '8'
+install:
+  - ps: Install-Product node $env:nodejs_version
+  - set CI=true
+  - npm install --global npm@latest
+  - set PATH=%APPDATA%\npm;%PATH%
+  - npm install
+matrix:
+  fast_finish: true
+build: off
+shallow_clone: true
+test_script:
+  - node --version
+  - npm --version
+  - npm run test-no-coverage
+cache:
+- '%APPDATA%\npm-cache'
diff --git a/node_modules/stacktracey/impl/partition.js b/node_modules/stacktracey/impl/partition.js
new file mode 100644
index 0000000..bb130b5
--- /dev/null
+++ b/node_modules/stacktracey/impl/partition.js
@@ -0,0 +1,22 @@
+"use strict";
+
+module.exports = (arr_, pred) => {
+
+    const arr   = arr_ || [],
+          spans = []
+    
+    let span = { label: undefined,
+                 items: [arr.first] }
+                 
+    arr.forEach (x => {
+
+        const label = pred (x)
+
+        if ((span.label !== label) && span.items.length) {
+            spans.push (span = { label: label, items: [x] }) }
+
+        else {
+            span.items.push (x) } })
+
+    return spans
+}
\ No newline at end of file
diff --git a/node_modules/stacktracey/package.json b/node_modules/stacktracey/package.json
new file mode 100644
index 0000000..97829f5
--- /dev/null
+++ b/node_modules/stacktracey/package.json
@@ -0,0 +1,87 @@
+{
+  "name": "stacktracey",
+  "version": "2.1.8",
+  "description": "Parses call stacks. Reads sources. Clean & filtered output. Sourcemaps. Node & browsers.",
+  "main": "stacktracey",
+  "types": "./stacktracey.d.ts",
+  "scripts": {
+    "lint": "eslint stacktracey.js",
+    "test": "nyc --reporter=html --reporter=text mocha --reporter spec",
+    "test-no-coverage": "mocha --reporter spec",
+    "autotest": "mocha --reporter spec --watch",
+    "coveralls": "nyc report --reporter=text-lcov | coveralls"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/xpl/stacktracey.git"
+  },
+  "keywords": [
+    "stack",
+    "stacktrace",
+    "stack printer",
+    "error printer",
+    "print error",
+    "print stack",
+    "print debug trace",
+    "debug",
+    "trace",
+    "parse",
+    "print",
+    "pretty",
+    "callstack",
+    "call stack",
+    "read sources",
+    "error",
+    "Error.stack",
+    "error stack",
+    "stack parse",
+    "call stack parsing",
+    "stack parsing",
+    "stack parse",
+    "parse stack",
+    "parse call stack",
+    "callstack parser",
+    "call stack parse",
+    "parse callstack",
+    "parse stacktrace",
+    "parse stack trace",
+    "error stack parse",
+    "Error.stack parse",
+    "stack parser",
+    "error parser",
+    "error trace",
+    "trace error",
+    "sourcemap",
+    "call location",
+    "source text",
+    "source lines",
+    "print error with sources",
+    "show error",
+    "handling exceptions",
+    "exception parser",
+    "exception printer",
+    "custom error",
+    "pretty print",
+    "pretty print errors",
+    "pretty print stack"
+  ],
+  "author": "Vitaly Gordon <rocket.mind@gmail.com>",
+  "license": "Unlicense",
+  "bugs": {
+    "url": "https://github.com/xpl/stacktracey/issues"
+  },
+  "homepage": "https://xpl.github.io/stacktracey",
+  "devDependencies": {
+    "babel-cli": "^6.26.0",
+    "chai": "^4.2.0",
+    "coveralls": "^3.0.3",
+    "eslint": "^4.19.1",
+    "istanbul": "^0.4.5",
+    "mocha": "^4.1.0",
+    "nyc": "^14.1.1"
+  },
+  "dependencies": {
+    "as-table": "^1.0.36",
+    "get-source": "^2.0.12"
+  }
+}
diff --git a/node_modules/stacktracey/stacktracey.d.ts b/node_modules/stacktracey/stacktracey.d.ts
new file mode 100644
index 0000000..bf4e3a4
--- /dev/null
+++ b/node_modules/stacktracey/stacktracey.d.ts
@@ -0,0 +1,88 @@
+declare class StackTracey {
+
+    constructor (input?: Error|string|StackTracey.Entry[], offset?: number)
+
+    items: StackTracey.Entry[]
+
+    extractEntryMetadata (e: StackTracey.Entry): StackTracey.Entry
+
+    shortenPath (relativePath: string): string
+    relativePath (fullPath: string): string
+    isThirdParty (relativePath: string): boolean
+
+    rawParse (str: string): StackTracey.Entry[]
+
+    withSourceAt (i: number): StackTracey.Entry
+    withSourceAsyncAt (i: number): Promise<StackTracey.Entry>
+
+    withSource (entry: StackTracey.Entry): StackTracey.Entry
+    withSourceAsync (entry: StackTracey.Entry): Promise<StackTracey.Entry>
+
+    withSources ():        StackTracey
+    withSourcesAsync ():   Promise<StackTracey>
+    mergeRepeatedLines (): StackTracey
+
+    clean ():              StackTracey
+    cleanAsync ():         Promise<StackTracey>
+
+    isClean (entry: StackTracey.Entry, index: number): boolean
+
+    map    (f: (x: StackTracey.Entry, i: number, arr: StackTracey.Entry[]) => StackTracey.Entry):   StackTracey
+    filter (f: (x: StackTracey.Entry, i: number, arr: StackTracey.Entry[]) => boolean):             StackTracey
+    slice  (from?: number, to?: number):                                                            StackTracey
+    concat (...args: StackTracey.Entry[]):                                                          StackTracey
+
+    at (i: number): StackTracey.Entry
+
+    asTable (opts?: { maxColumnWidths?: StackTracey.MaxColumnWidths }): string
+
+    maxColumnWidths (): StackTracey.MaxColumnWidths
+
+    static resetCache (): void
+    static locationsEqual (a: StackTracey.Location, b: StackTracey.Location): boolean
+}
+
+declare namespace StackTracey {
+
+    interface SourceFile {
+
+        path: string
+        text: string
+        lines: string[]
+        error?: Error
+    }
+    
+    interface Location {
+    
+        file:    string
+        line?:   number
+        column?: number
+    }
+    
+    interface Entry extends Location {
+    
+        beforeParse: string
+        callee:      string
+        index:       boolean
+        native:      boolean
+    
+        calleeShort:  string
+        fileRelative: string
+        fileShort:    string
+        fileName:     string
+        thirdParty:   boolean
+    
+        hide?:       boolean
+        sourceLine?: string
+        sourceFile?: SourceFile
+        error?:      Error
+    }
+    
+    interface MaxColumnWidths {
+        callee:     number
+        file:       number
+        sourceLine: number
+    }
+}
+
+export = StackTracey
diff --git a/node_modules/stacktracey/stacktracey.js b/node_modules/stacktracey/stacktracey.js
new file mode 100644
index 0000000..b86b6db
--- /dev/null
+++ b/node_modules/stacktracey/stacktracey.js
@@ -0,0 +1,339 @@
+"use strict";
+
+/*  ------------------------------------------------------------------------ */
+
+const O              = Object,
+      isBrowser      = (typeof window !== 'undefined') && (window.window === window) && window.navigator,
+      nodeRequire    = isBrowser ? null : module.require, // to prevent bundlers from expanding the require call
+      lastOf         = x => x[x.length - 1],
+      getSource      = require ('get-source'),
+      partition      = require ('./impl/partition'),
+      asTable        = require ('as-table'),
+      nixSlashes     = x => x.replace (/\\/g, '/'),
+      pathRoot       = isBrowser ? window.location.href : (nixSlashes (process.cwd ()) + '/')
+
+/*  ------------------------------------------------------------------------ */
+
+class StackTracey {
+
+    constructor (input, offset) {
+        
+        const originalInput          = input
+            , isParseableSyntaxError = input && (input instanceof SyntaxError && !isBrowser)
+                
+    /*  new StackTracey ()            */
+
+        if (!input) {
+             input = new Error ()
+             offset = (offset === undefined) ? 1 : offset
+        }
+
+    /*  new StackTracey (Error)      */
+
+        if (input instanceof Error) {
+            input = input.stack || ''
+        }
+
+    /*  new StackTracey (string)     */
+
+        if (typeof input === 'string') {
+            input = this.rawParse (input).slice (offset).map (x => this.extractEntryMetadata (x))
+        }
+
+    /*  new StackTracey (array)      */
+
+        if (Array.isArray (input)) {
+
+            if (isParseableSyntaxError) {
+                
+                const rawLines = nodeRequire ('util').inspect (originalInput).split ('\n')
+                    , fileLine = rawLines[0].split (':')
+                    , line = fileLine.pop ()
+                    , file = fileLine.join (':')
+
+                if (file) {
+                    input.unshift ({
+                        file: nixSlashes (file),
+                        line: line,
+                        column: (rawLines[2] || '').indexOf ('^') + 1,
+                        sourceLine: rawLines[1],
+                        callee: '(syntax error)',
+                        syntaxError: true
+                    })
+                }
+            }
+
+            this.items = input
+
+        } else {
+            this.items = []
+        }
+    }
+
+    extractEntryMetadata (e) {
+
+        const decomposedPath = this.decomposePath (e.file || '')
+        const fileRelative = decomposedPath[0]
+        const externalDomain = decomposedPath[1]
+
+        return O.assign (e, {
+
+            calleeShort:    e.calleeShort || lastOf ((e.callee || '').split ('.')),
+            fileRelative:   fileRelative,
+            fileShort:      this.shortenPath (fileRelative),
+            fileName:       lastOf ((e.file || '').split ('/')),
+            thirdParty:     this.isThirdParty (fileRelative, externalDomain) && !e.index,
+            externalDomain: externalDomain
+        })
+    }
+
+    shortenPath (relativePath) {
+        return relativePath.replace (/^node_modules\//, '')
+                           .replace (/^webpack\/bootstrap\//, '')
+                           .replace (/^__parcel_source_root\//, '')
+    }
+
+    decomposePath (fullPath) {
+        let result = fullPath
+        
+        if (isBrowser) result = result.replace (pathRoot, '')
+
+        const externalDomainMatch = result.match (/^(http|https)\:\/\/?([^\/]+)\/(.*)/)
+        const externalDomain = externalDomainMatch ? externalDomainMatch[2] : undefined
+        result = externalDomainMatch ? externalDomainMatch[3] : result
+
+        if (!isBrowser) result = nodeRequire ('path').relative (pathRoot, result)
+
+        return [
+            nixSlashes(result).replace (/^.*\:\/\/?\/?/, ''), // cut webpack:/// and webpack:/ things
+            externalDomain
+        ]
+    }
+
+    isThirdParty (relativePath, externalDomain) {
+        return externalDomain ||
+               (relativePath[0] === '~')                          || // webpack-specific heuristic
+               (relativePath[0] === '/')                          || // external source
+               (relativePath.indexOf ('node_modules')      === 0) ||
+               (relativePath.indexOf ('webpack/bootstrap') === 0)
+    }
+
+    rawParse (str) {
+
+        const lines = (str || '').split ('\n')
+
+        const entries = lines.map (line => {
+
+            line = line.trim ()
+
+            let callee, fileLineColumn = [], native, planA, planB
+
+            if ((planA = line.match (/at (.+) \(eval at .+ \((.+)\), .+\)/)) || // eval calls
+                (planA = line.match (/at (.+) \((.+)\)/)) ||
+                ((line.slice (0, 3) !== 'at ') && (planA = line.match (/(.*)@(.*)/)))) {
+
+                callee         =  planA[1]
+                native         = (planA[2] === 'native')
+                fileLineColumn = (planA[2].match (/(.*):(\d+):(\d+)/) ||
+                                  planA[2].match (/(.*):(\d+)/) || []).slice (1)
+
+            } else if ((planB = line.match (/^(at\s+)*(.+):(\d+):(\d+)/) )) {
+                fileLineColumn = (planB).slice (2)
+
+            } else {
+                return undefined
+            }
+
+        /*  Detect things like Array.reduce
+            TODO: detect more built-in types            */
+            
+            if (callee && !fileLineColumn[0]) {
+                const type = callee.split ('.')[0]
+                if (type === 'Array') {
+                    native = true
+                }
+            }
+
+            return {
+                beforeParse: line,
+                callee:      callee || '',
+                index:       isBrowser && (fileLineColumn[0] === window.location.href),
+                native:      native || false,
+                file:        nixSlashes (fileLineColumn[0] || ''),
+                line:        parseInt (fileLineColumn[1] || '', 10) || undefined,
+                column:      parseInt (fileLineColumn[2] || '', 10) || undefined
+            }
+        })
+
+        return entries.filter (x => (x !== undefined))
+    }
+
+    withSourceAt (i) {
+        return this.items[i] && this.withSource (this.items[i])
+    }
+
+    withSourceAsyncAt (i) {
+        return this.items[i] && this.withSourceAsync (this.items[i])
+    }
+
+    withSource (loc) {
+        
+        if (this.shouldSkipResolving (loc)) {
+            return loc
+            
+        } else {
+
+            let resolved = getSource (loc.file || '').resolve (loc)
+
+            if (!resolved.sourceFile) {
+                return loc
+            }
+
+            return this.withSourceResolved (loc, resolved)
+        }
+    }
+
+    withSourceAsync (loc) {
+
+        if (this.shouldSkipResolving (loc)) {
+            return Promise.resolve (loc)
+            
+        } else {
+            return getSource.async (loc.file || '')
+                        .then (x => x.resolve (loc))
+                        .then (resolved => this.withSourceResolved (loc, resolved))
+                        .catch (e => this.withSourceResolved (loc, { error: e, sourceLine: '' }))
+        }
+    }
+
+    shouldSkipResolving (loc) {
+        return loc.sourceFile || loc.error || (loc.file && loc.file.indexOf ('<') >= 0) // skip things like <anonymous> and stuff that was already fetched
+    }
+
+    withSourceResolved (loc, resolved) {
+
+        if (resolved.sourceFile && !resolved.sourceFile.error) {
+            resolved.file = nixSlashes (resolved.sourceFile.path)
+            resolved = this.extractEntryMetadata (resolved)
+        }
+
+        if (resolved.sourceLine.includes ('// @hide')) {
+            resolved.sourceLine = resolved.sourceLine.replace  ('// @hide', '')
+            resolved.hide       = true
+        }
+
+        if (resolved.sourceLine.includes ('__webpack_require__') || // webpack-specific heuristics
+            resolved.sourceLine.includes ('/******/ ({')) {
+            resolved.thirdParty = true
+        }
+
+        return O.assign ({ sourceLine: '' }, loc, resolved)
+    }
+
+    withSources () {
+        return this.map (x => this.withSource (x))
+    }
+
+    withSourcesAsync () {
+        return Promise.all (this.items.map (x => this.withSourceAsync (x)))
+                      .then (items => new StackTracey (items))
+    }
+
+    mergeRepeatedLines () {
+        return new StackTracey (
+            partition (this.items, e => e.file + e.line).map (
+                group => {
+                    return group.items.slice (1).reduce ((memo, entry) => {
+                        memo.callee      = (memo.callee      || '<anonymous>') + ' → ' + (entry.callee      || '<anonymous>')
+                        memo.calleeShort = (memo.calleeShort || '<anonymous>') + ' → ' + (entry.calleeShort || '<anonymous>')
+                        return memo
+                    }, O.assign ({}, group.items[0]))
+                }
+            )
+        )
+    }
+
+    clean () {
+        const s = this.withSources ().mergeRepeatedLines ()
+        return s.filter (s.isClean.bind (s))
+    }
+
+    cleanAsync () {
+        return this.withSourcesAsync ().then (s => {
+            s = s.mergeRepeatedLines ()
+            return s.filter (s.isClean.bind (s))
+        })
+    }
+
+    isClean (entry, index) {
+        return (index === 0) || !(entry.thirdParty || entry.hide || entry.native)
+    }
+
+    at (i) {
+        return O.assign ({
+
+            beforeParse: '',
+            callee:      '<???>',
+            index:       false,
+            native:      false,
+            file:        '<???>',
+            line:        0,
+            column:      0
+
+        }, this.items[i])
+    }
+
+    asTable (opts) {
+
+        const maxColumnWidths = (opts && opts.maxColumnWidths) || this.maxColumnWidths ()
+
+        const trimEnd   = (s, n) => s && ((s.length > n) ? (s.slice (0, n-1) + '…') : s)   
+        const trimStart = (s, n) => s && ((s.length > n) ? ('…' + s.slice (-(n-1))) : s)
+
+        const trimmed = this.map (
+            e => [
+                ('at ' + trimEnd (e.calleeShort,                                maxColumnWidths.callee)),
+                trimStart ((e.fileShort && (e.fileShort + ':' + e.line)) || '', maxColumnWidths.file),
+                trimEnd (((e.sourceLine || '').trim () || ''),                  maxColumnWidths.sourceLine)
+            ]
+        )
+
+        return asTable (trimmed.items)
+    }
+
+    maxColumnWidths () {
+        return {
+            callee:     30,
+            file:       60,
+            sourceLine: 80
+        }
+    }
+
+    static resetCache () {
+
+        getSource.resetCache ()
+        getSource.async.resetCache ()
+    }
+
+    static locationsEqual (a, b) {
+
+        return (a.file   === b.file) &&
+               (a.line   === b.line) &&
+               (a.column === b.column)
+    }
+}
+
+/*  Array methods
+    ------------------------------------------------------------------------ */
+
+;['map', 'filter', 'slice', 'concat'].forEach (method => {
+
+    StackTracey.prototype[method] = function (/*...args */) { // no support for ...args in Node v4 :(
+        return new StackTracey (this.items[method].apply (this.items, arguments))
+    }
+})
+
+/*  ------------------------------------------------------------------------ */
+
+module.exports = StackTracey
+
diff --git a/node_modules/stacktracey/test.js b/node_modules/stacktracey/test.js
new file mode 100644
index 0000000..38270b1
--- /dev/null
+++ b/node_modules/stacktracey/test.js
@@ -0,0 +1,356 @@
+"use strict";
+
+/*  ------------------------------------------------------------------------ */
+
+const nodeVersion = Math.floor (Number (process.version.match (/^v(\d+\.\d+)/)[1]))
+
+/*  ------------------------------------------------------------------------ */
+                    
+require ('chai').should ()
+
+/*  ------------------------------------------------------------------------ */
+
+describe ('impl/partition', () => {
+
+    const partition = require ('./impl/partition')
+    const spans     = partition ([ 'a', 'b', 'c', undefined, undefined, 42], x => typeof x)
+
+    spans.should.deep.equal ([ { label: 'string',    items: ['a', 'b', 'c'] },
+                               { label: 'undefined', items: [undefined, undefined] },
+                               { label: 'number',    items: [42] } ])
+})
+
+/*  ------------------------------------------------------------------------ */
+
+describe ('StackTracey', () => {
+
+    const path = require ('path')
+    const StackTracey = require ('./stacktracey')
+    
+    StackTracey.resetCache ()
+
+    const shouldBeVisibleInStackTrace = () => new StackTracey () // @hide
+
+    it ('works', () => {
+
+        const stack = shouldBeVisibleInStackTrace ()
+
+        stack.should.be.an.instanceof (StackTracey)
+
+        stack.items[0].should.deep.equal ({
+            beforeParse: 'at shouldBeVisibleInStackTrace (' + path.join (process.cwd (), 'test.js') + ':32:47)',
+            callee: 'shouldBeVisibleInStackTrace',
+            index: false,
+            native: false,
+            file: path.join (process.cwd (), 'test.js').replace (/\\/g, '/'),
+            line: 32,
+            column: 47,
+            calleeShort: 'shouldBeVisibleInStackTrace',
+            fileName: 'test.js',
+            fileRelative: 'test.js',
+            fileShort: 'test.js',
+            thirdParty: false,
+            externalDomain: undefined
+        })
+    })
+
+    it ('allows to read sources', () => {
+
+        const stack = shouldBeVisibleInStackTrace ().withSources () // @hide
+
+        stack.should.be.an.instanceof (StackTracey)
+        stack.items[0].beforeParse.should.not.be.undefined // should preserve previous fields
+        stack.items[0].sourceLine.should.equal ('    const shouldBeVisibleInStackTrace = () => new StackTracey () ')
+        stack.items[0].hide.should.equal (true) // reads // @hide marker
+        stack.items[1].hide.should.equal (true) // reads // @hide marker
+
+        const cleanStack = stack.clean ()
+
+        cleanStack.should.be.an.instanceof (StackTracey)
+
+        StackTracey.locationsEqual (cleanStack.items[0], stack.items[0]).should.equal (true)  // should not clean top element
+        StackTracey.locationsEqual (cleanStack.items[1], stack.items[1]).should.equal (false) // should clean second element (due to // @hide)
+    })
+    
+
+    it ('allows to read sources (async)', () => {
+
+        return shouldBeVisibleInStackTrace ().withSourcesAsync ().then (stack => { // @hide
+
+            stack.should.be.an.instanceof (StackTracey)
+            stack.items[0].beforeParse.should.not.be.undefined // should preserve previous fields
+            stack.items[0].sourceLine.should.equal ('    const shouldBeVisibleInStackTrace = () => new StackTracey () ')
+            stack.items[0].hide.should.equal (true) // reads // @hide marker
+            stack.items[1].hide.should.equal (true) // reads // @hide marker
+
+            return stack.cleanAsync ().then (cleanStack => {
+
+                cleanStack.should.be.an.instanceof (StackTracey)
+
+                StackTracey.locationsEqual (cleanStack.items[0], stack.items[0]).should.equal (true)  // should not clean top element
+                StackTracey.locationsEqual (cleanStack.items[1], stack.items[1]).should.equal (false) // should clean second element (due to // @hide)
+            })
+        })
+    })
+
+    it ('allows creation from array + groups duplicate lines', () => {
+
+        const stack = new StackTracey ([
+            { file: 'yo.js',  line: 11, callee: 'a.funkktion',   calleeShort: 'a' },
+            { file: 'yo.js',  line: 10, callee: 'foobar.boobar', calleeShort: 'foobar' },
+            { file: 'yo.js',  line: 10, callee: 'foobar.boobar', calleeShort: 'foobar' },
+            { file: 'lol.js', line: 10, callee: '',              calleeShort: '' },
+        ])
+
+        const clean = stack.clean ().map (x => Object.assign ({
+                                                    file: x.file,
+                                                    line: x.line,
+                                                    callee: x.callee,
+                                                    calleeShort: x.calleeShort }))
+
+        clean.should.be.an.instanceof (StackTracey)
+
+        clean.items.should.deep.equal ([ // .should does not recognize StackTracey as normal array...
+
+            { file: 'yo.js',  line: 11, callee: 'a.funkktion',   calleeShort: 'a' },
+            { file: 'yo.js',  line: 10, callee: 'foobar.boobar → foobar.boobar', calleeShort: 'foobar → foobar' },
+            { file: 'lol.js', line: 10, callee: '',              calleeShort: '' },
+        ])
+    })
+
+    it ('handles inaccessible files', () => {
+
+        const stack = shouldBeVisibleInStackTrace ()
+              stack.items[0].file = '^___^'
+              stack.withSources ().items[0].sourceLine.should.equal ('')
+              stack.withSourceAt (0).error.should.be.an.instanceof (Error)
+    })
+
+    it ('exposes some Array methods', () => {
+
+        const stack = shouldBeVisibleInStackTrace ()
+        const sliced = stack.slice (1)
+        const deltaLength = (stack.items.length - sliced.items.length)
+
+        deltaLength.should.equal (1)
+        sliced.should.be.an.instanceof (StackTracey)
+
+        sliced.filter (x => true).should.be.an.instanceof (StackTracey)
+    })
+
+    it ('works with sourcemaps', () => {
+
+        const mkay = require ('./test_files/mkay.uglified')
+
+        try {
+            mkay ()
+        }
+        catch (e) {
+
+            e.message.should.equal ('mkay')
+
+            const top = new StackTracey (e).withSourceAt (0)
+
+            top.line        .should.equal (4)
+            top.sourceLine  .should.equal ('\t\t\t\t\tthrow new Error (\'mkay\') }')
+
+            top.file        .should.equal (path.resolve ('./test_files/mkay.js').replace (/\\/g, '/'))
+            top.fileShort   .should.equal ('test_files/mkay.js')
+            top.fileName    .should.equal ('mkay.js')
+        }
+    })
+
+    it ('pretty printing works', function prettyTest () {
+
+        const pretty = new StackTracey ().clean ().asTable ()
+
+        console.log ('')
+        console.log (pretty, '\n')
+
+        //const spaces = nodeVersion > 8 ? '        ' : '                      ';
+
+        console.log (pretty.split ('\n')[0].match (/at prettyTest\s+test.js\:144\s+const pretty = new StackTracey \(\)\.clean\.pretty/))
+    })
+
+    it ('trims too long columns in the pretty printed output', () => {
+
+        const stack = new StackTracey ([
+            { fileShort: 'dasdasdasdadadadasdasdasdasdasddasdsadadasdassdasdaddadasdas.js', line: 11, calleeShort: 'dadasdasdasdasdasdasdasdasdasdasdasdasd' },
+        ])
+
+        stack.withSources ().asTable ().split ('\n')[0].should.equal ('at dadasdasdasdasdasdasdasdasdas…  …asdadadadasdasdasdasdasddasdsadadasdassdasdaddadasdas.js:11  ')
+    })
+    
+    it ('exposes Array methods', () => {
+
+        const stack = new StackTracey ([
+            { file: 'foo' },
+            { file: 'bar' }
+        ])
+
+        const mapped = stack.map ((x, i) => Object.assign (x, { i }))
+
+        mapped.items.should.deep.equal ([ { file: 'foo', i: 0 }, { file: 'bar', i: 1 } ])
+        mapped.should.be.an.instanceof (StackTracey)
+
+        const filtered = stack.filter (x => x.file === 'bar')
+
+        filtered.items.length.should.equal (1)
+        filtered.items[0].should.deep.equal ({ file: 'bar', i: 1 })
+    })
+
+    it ('computes relative path correctly', () => {
+        
+        StackTracey.prototype.decomposePath ('webpack:///~/jquery/dist/jquery.js')
+                             .should.deep.equal (      ['~/jquery/dist/jquery.js', undefined])
+
+        StackTracey.prototype.decomposePath ('webpack:/webpack/bootstrap')
+                             .should.deep.equal (    ['webpack/bootstrap', undefined])
+    })
+
+    it ('computes short path correctly', () => {
+
+        StackTracey.prototype.shortenPath  ('webpack/bootstrap/jquery/dist/jquery.js')
+                             .should.equal ('jquery/dist/jquery.js')
+
+        StackTracey.prototype.shortenPath  ('node_modules/jquery/dist/jquery.js')
+                             .should.equal ('jquery/dist/jquery.js')
+    })
+
+    if (nodeVersion >= 5) {
+
+        it ('recognizes SyntaxErrors', () => {
+
+            try { require ('./test_files/syntax_error.js') }
+            catch (e) {
+
+                const stack = new StackTracey (e).clean ()
+
+                console.log ('')
+                console.log (stack.asTable (), '\n')
+
+                stack.items[0].syntaxError.should.equal (true)
+                stack.items[0].column.should.equal (5)
+                
+                const spaces  = nodeVersion > 8 ? '    ' : '                  '
+                const spaces2 = nodeVersion > 8 ? (nodeVersion > 11 ? '         ' : '        ') : '  '
+
+                stack.asTable ().split ('\n')[0].should.equal ('at (syntax error)' + spaces + 'test_files/syntax_error.js:2' + spaces2 + 'foo->bar ()                                     ')
+            }
+        })
+    }
+
+    it ('allows to override isThirdParty()', () => {
+
+        class MyStackTracey extends StackTracey {
+            isThirdParty (path) {
+                return super.isThirdParty (path) || (path === 'test.js')
+            }
+        }
+
+        new MyStackTracey ().items[0].thirdParty.should.equal (true)
+
+        class MyStackTracey2 extends MyStackTracey {
+            isThirdParty (path) {
+                return super.isThirdParty (path) && (path !== 'test.js')
+            }
+        }
+        
+        new MyStackTracey2 ().items[0].thirdParty.should.equal (false)
+    })
+
+    it ('.withSourceAt', () => {
+
+        const line = new StackTracey ().withSourceAt (0).sourceLine.trim ()
+        line.should.equal ('const line = new StackTracey ().withSourceAt (0).sourceLine.trim ()')
+    })
+
+    it ('.at', () => {
+        
+        new StackTracey ().at (0).file.includes ('stacktracey/test.js').should.equal (true)
+    })
+
+    it ('detects Array methods as native', () => {
+
+        const arr = [1,2,3]
+        const stack = arr.reduce (() => new StackTracey ())
+
+        stack.items[1].native.should.equal (true)
+    })
+
+    it ('works on Windows', () => {
+
+        const dir = process.cwd ()
+
+        const windowsStack =
+                [
+                'Error',
+                '    at Context.it (' + dir + '\\test.js:38:22)',
+                '    at callFn (' + dir + '\\node_modules\\mocha\\lib\\runnable.js:354:21)',
+                '    at runCallback (timers.js:800:20)'
+                ].join ('\n')
+
+        const stack = new StackTracey (windowsStack)
+        const pretty = stack.withSources ().asTable ()
+        const lines = pretty.split ('\n')
+
+        console.log ('')
+        console.log (pretty, '\n')
+
+        lines[0].should.equal ('at it           test.js:38                 stack.should.be.an.instanceof (StackTracey)')
+        lines[1].indexOf      ('at callFn       mocha/lib/runnable.js:354').should.equal (0)
+    })
+
+    it ('parses "eval at" stuff', () => {
+
+        function bar() {
+            const entry = new StackTracey().items[1]
+            entry.callee.should.equal('eval')
+            entry.fileName.should.equal('test.js')
+        }
+        function foo() {
+            eval('bar()')
+        }
+        foo()
+    })
+
+    it ('recognizes externalDomain', () => {
+
+        const stack =
+        [
+        'Error',
+        '    at foo (test.js:38:22)',
+        '    at bar (http://shmoogle.google.com/hohoho/test.js:38:22)',
+        ].join ('\n')
+
+        const items = new StackTracey(stack).items
+
+        ;(items[0].externalDomain === undefined).should.be.true
+        items[1].externalDomain.should.equal('shmoogle.google.com')
+
+        items[0].thirdParty.should.be.false
+        items[1].thirdParty.should.be.true
+
+        items[1].fileRelative.should.equal('hohoho/test.js')
+    })
+
+    it ('recognizes locations without column', () => {
+        const stack = [
+        'Error',
+        '    at ValidateCompatibilityWithBindGroupLayout (../../third_party/dawn/src/dawn_native/ShaderModule.cpp:395)',
+        ].join ('\n')
+
+        const items = new StackTracey(stack).items
+
+        items[0].should.contain({
+            callee: 'ValidateCompatibilityWithBindGroupLayout',
+            calleeShort: 'ValidateCompatibilityWithBindGroupLayout',
+            fileRelative: '../../third_party/dawn/src/dawn_native/ShaderModule.cpp',
+            fileShort: '../../third_party/dawn/src/dawn_native/ShaderModule.cpp',
+            fileName: 'ShaderModule.cpp'
+        })
+    })
+})
+
+
+
diff --git a/node_modules/stacktracey/test_files/mkay.js b/node_modules/stacktracey/test_files/mkay.js
new file mode 100644
index 0000000..6301f48
--- /dev/null
+++ b/node_modules/stacktracey/test_files/mkay.js
@@ -0,0 +1,4 @@
+/*	This will help assuring whether our source mapping works OK		*/
+
+module.exports = function mkay () {
+					throw new Error ('mkay') }
\ No newline at end of file
diff --git a/node_modules/stacktracey/test_files/mkay.uglified.js b/node_modules/stacktracey/test_files/mkay.uglified.js
new file mode 100644
index 0000000..8bafeaf
--- /dev/null
+++ b/node_modules/stacktracey/test_files/mkay.uglified.js
@@ -0,0 +1,2 @@
+module.exports=function mkay(){throw new Error("mkay")};
+//# sourceMappingURL=mkay.uglified.js.map
\ No newline at end of file
diff --git a/node_modules/stacktracey/test_files/mkay.uglified.js.map b/node_modules/stacktracey/test_files/mkay.uglified.js.map
new file mode 100644
index 0000000..fbe3ad6
--- /dev/null
+++ b/node_modules/stacktracey/test_files/mkay.uglified.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["mkay.js"],"names":["module","exports","mkay","Error"],"mappings":"AAEAA,OAAOC,QAAU,QAASC,QACrB,KAAM,IAAIC,OAAO","file":"mkay.uglified.js"}
\ No newline at end of file
diff --git a/node_modules/stacktracey/test_files/syntax_error.js b/node_modules/stacktracey/test_files/syntax_error.js
new file mode 100644
index 0000000..78eb0fb
--- /dev/null
+++ b/node_modules/stacktracey/test_files/syntax_error.js
@@ -0,0 +1,2 @@
+// next line contains a syntax error (not a valid JavaScript)
+foo->bar ()
\ No newline at end of file