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(
function
(
root
,
factory
)
{
'use strict'
;
// Universal Module Definition (UMD) to support AMD, CommonJS/Node.js, Rhino, and browsers.
/* istanbul ignore next */
if
(
typeof
define
===
'function'
&&
define
.
amd
)
{
define
(
'stacktrace'
,
[
'error-stack-parser'
,
'stack-generator'
,
'stacktrace-gps'
]
,
factory
)
;
}
else
if
(
typeof
exports
===
'object'
)
{
module
.
exports
=
factory
(
require
(
'error-stack-parser'
)
,
require
(
'stack-generator'
)
,
require
(
'stacktrace-gps'
)
)
;
}
else
{
root
.
StackTrace
=
factory
(
root
.
ErrorStackParser
,
root
.
StackGenerator
,
root
.
StackTraceGPS
)
;
}
}
(
this
,
function
StackTrace
(
ErrorStackParser
,
StackGenerator
,
StackTraceGPS
)
{
var
_options
=
{
filter
:
function
(
stackframe
)
{
// Filter out stackframes for this library by default
return
(
stackframe
.
functionName
||
''
)
.
indexOf
(
'StackTrace$$'
)
===
-
1
&&
(
stackframe
.
functionName
||
''
)
.
indexOf
(
'ErrorStackParser$$'
)
===
-
1
&&
(
stackframe
.
functionName
||
''
)
.
indexOf
(
'StackTraceGPS$$'
)
===
-
1
&&
(
stackframe
.
functionName
||
''
)
.
indexOf
(
'StackGenerator$$'
)
===
-
1
;
}
,
sourceCache
:
{
}
}
;
var
_generateError
=
function
StackTrace$$GenerateError
(
)
{
try
{
// Error must be thrown to get stack in IE
throw
new
Error
(
)
;
}
catch
(
err
)
{
return
err
;
}
}
;
/**
* Merge 2 given Objects. If a conflict occurs the second object wins.
* Does not do deep merges.
*
*
@param
{
Object
} first base object
*
@param
{
Object
} second overrides
*
@returns
{
Object
} merged first and second
*
@private
*/
function
_merge
(
first
,
second
)
{
var
target
=
{
}
;
[
first
,
second
]
.
forEach
(
function
(
obj
)
{
for
(
var
prop
in
obj
)
{
if
(
Object
.
prototype
.
hasOwnProperty
.
call
(
obj
,
prop
)
)
{
target
[
prop
]
=
obj
[
prop
]
;
}
}
return
target
;
}
)
;
return
target
;
}
function
_isShapedLikeParsableError
(
err
)
{
return
err
.
stack
||
err
[
'opera#sourceloc'
]
;
}
function
_filtered
(
stackframes
,
filter
)
{
if
(
typeof
filter
===
'function'
)
{
return
stackframes
.
filter
(
filter
)
;
}
return
stackframes
;
}
return
{
/**
* Get a backtrace from invocation point.
*
*
@param
{
Object
} opts
*
@returns
{
Array
} of StackFrame
*/
get
:
function
StackTrace$$get
(
opts
)
{
var
err
=
_generateError
(
)
;
return
_isShapedLikeParsableError
(
err
)
?
this
.
fromError
(
err
,
opts
)
:
this
.
generateArtificially
(
opts
)
;
}
,
/**
* Get a backtrace from invocation point.
* IMPORTANT: Does not handle source maps or guess function names!
*
*
@param
{
Object
} opts
*
@returns
{
Array
} of StackFrame
*/
getSync
:
function
StackTrace$$getSync
(
opts
)
{
opts
=
_merge
(
_options
,
opts
)
;
var
err
=
_generateError
(
)
;
var
stack
=
_isShapedLikeParsableError
(
err
)
?
ErrorStackParser
.
parse
(
err
)
:
StackGenerator
.
backtrace
(
opts
)
;
return
_filtered
(
stack
,
opts
.
filter
)
;
}
,
/**
* Given an error object, parse it.
*
*
@param
{
Error
} error object
*
@param
{
Object
} opts
*
@returns
{
Promise
} for Array[StackFrame}
*/
fromError
:
function
StackTrace$$fromError
(
error
,
opts
)
{
opts
=
_merge
(
_options
,
opts
)
;
var
gps
=
new
StackTraceGPS
(
opts
)
;
return
new
Promise
(
function
(
resolve
)
{
var
stackframes
=
_filtered
(
ErrorStackParser
.
parse
(
error
)
,
opts
.
filter
)
;
resolve
(
Promise
.
all
(
stackframes
.
map
(
function
(
sf
)
{
return
new
Promise
(
function
(
resolve
)
{
function
resolveOriginal
(
)
{
resolve
(
sf
)
;
}
gps
.
pinpoint
(
sf
)
.
then
(
resolve
,
resolveOriginal
)
[
'catch'
]
(
resolveOriginal
)
;
}
)
;
}
)
)
)
;
}
.
bind
(
this
)
)
;
}
,
/**
* Use StackGenerator to generate a backtrace.
*
*
@param
{
Object
} opts
*
@returns
{
Promise
} of Array[StackFrame]
*/
generateArtificially
:
function
StackTrace$$generateArtificially
(
opts
)
{
opts
=
_merge
(
_options
,
opts
)
;
var
stackFrames
=
StackGenerator
.
backtrace
(
opts
)
;
if
(
typeof
opts
.
filter
===
'function'
)
{
stackFrames
=
stackFrames
.
filter
(
opts
.
filter
)
;
}
return
Promise
.
resolve
(
stackFrames
)
;
}
,
/**
* Given a function, wrap it such that invocations trigger a callback that
* is called with a stack trace.
*
*
@param
{
Function
} fn to be instrumented
*
@param
{
Function
} callback function to call with a stack trace on invocation
*
@param
{
Function
} errback optional function to call with error if unable to get stack trace.
*
@param
{
Object
} thisArg optional context object (e.g. window)
*/
instrument
:
function
StackTrace$$instrument
(
fn
,
callback
,
errback
,
thisArg
)
{
if
(
typeof
fn
!==
'function'
)
{
throw
new
Error
(
'Cannot instrument non-function object'
)
;
}
else
if
(
typeof
fn
.
__stacktraceOriginalFn
===
'function'
)
{
// Already instrumented, return given Function
return
fn
;
}
var
instrumented
=
function
StackTrace$$instrumented
(
)
{
try
{
this
.
get
(
)
.
then
(
callback
,
errback
)
[
'catch'
]
(
errback
)
;
return
fn
.
apply
(
thisArg
||
this
,
arguments
)
;
}
catch
(
e
)
{
if
(
_isShapedLikeParsableError
(
e
)
)
{
this
.
fromError
(
e
)
.
then
(
callback
,
errback
)
[
'catch'
]
(
errback
)
;
}
throw
e
;
}
}
.
bind
(
this
)
;
instrumented
.
__stacktraceOriginalFn
=
fn
;
return
instrumented
;
}
,
/**
* Given a function that has been instrumented,
* revert the function to it's original (non-instrumented) state.
*
*
@param
{
Function
} fn to de-instrument
*/
deinstrument
:
function
StackTrace$$deinstrument
(
fn
)
{
if
(
typeof
fn
!==
'function'
)
{
throw
new
Error
(
'Cannot de-instrument non-function object'
)
;
}
else
if
(
typeof
fn
.
__stacktraceOriginalFn
===
'function'
)
{
return
fn
.
__stacktraceOriginalFn
;
}
else
{
// Function not instrumented, return original
return
fn
;
}
}
,
/**
* Given an error message and Array of StackFrames, serialize and POST to given URL.
*
*
@param
{
Array
} stackframes
*
@param
{
String
} url
*
@param
{
String
} errorMsg
*
@param
{
Object
} requestOptions
*/
report
:
function
StackTrace$$report
(
stackframes
,
url
,
errorMsg
,
requestOptions
)
{
return
new
Promise
(
function
(
resolve
,
reject
)
{
var
req
=
new
XMLHttpRequest
(
)
;
req
.
onerror
=
reject
;
req
.
onreadystatechange
=
function
onreadystatechange
(
)
{
if
(
req
.
readyState
===
4
)
{
if
(
req
.
status
>=
200
&&
req
.
status
<
400
)
{
resolve
(
req
.
responseText
)
;
}
else
{
reject
(
new
Error
(
'POST to '
+
url
+
' failed with status: '
+
req
.
status
)
)
;
}
}
}
;
req
.
open
(
'post'
,
url
)
;
// Set request headers
req
.
setRequestHeader
(
'Content-Type'
,
'application/json'
)
;
if
(
requestOptions
&&
typeof
requestOptions
.
headers
===
'object'
)
{
var
headers
=
requestOptions
.
headers
;
for
(
var
header
in
headers
)
{
if
(
Object
.
prototype
.
hasOwnProperty
.
call
(
headers
,
header
)
)
{
req
.
setRequestHeader
(
header
,
headers
[
header
]
)
;
}
}
}
var
reportPayload
=
{
stack
:
stackframes
}
;
if
(
errorMsg
!==
undefined
&&
errorMsg
!==
null
)
{
reportPayload
.
message
=
errorMsg
;
}
req
.
send
(
JSON
.
stringify
(
reportPayload
)
)
;
}
)
;
}
}
;
}
)
)
;
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