ProcessError class

Package:
@azure/core-process

An error raised while resolving or executing a process.

The captured output is non-enumerable so ordinary logging and serialization do not expose it accidentally.

Extends

Error

Constructors

ProcessError(string, ProcessErrorOptions)

Creates a process error.

Properties

code

The operating-system error code or process exit code.
killed

Whether the process was killed.
signal

The signal that terminated the process.
stderr

Captured standard error, when available.
stdout

Captured standard output, when available.

Inherited Properties

message
name
stack
stackTraceLimit

The Error.stackTraceLimit property specifies the number of stack frames collected by a stack trace (whether generated by new Error().stack or Error.captureStackTrace(obj)).

The default value is 10 but may be set to any valid JavaScript number. Changes will affect any stack trace captured after the value has been changed.

If set to a non-number value, or set to a negative number, stack traces will not capture any frames.

Inherited Methods

captureStackTrace(object, Function)

Creates a .stack property on targetObject, which when accessed returns a string representing the location in the code at which Error.captureStackTrace() was called.

const myObject = {};
Error.captureStackTrace(myObject);
myObject.stack;  // Similar to `new Error().stack`

The first line of the trace will be prefixed with ${myObject.name}: ${myObject.message}.

The optional constructorOpt argument accepts a function. If given, all frames above constructorOpt, including constructorOpt, will be omitted from the generated stack trace.

The constructorOpt argument is useful for hiding implementation details of error generation from the user. For instance:

function a() {
  b();
}

function b() {
  c();
}

function c() {
  // Create an error without stack trace to avoid calculating the stack trace twice.
  const { stackTraceLimit } = Error;
  Error.stackTraceLimit = 0;
  const error = new Error();
  Error.stackTraceLimit = stackTraceLimit;

  // Capture the stack trace above function b
  Error.captureStackTrace(error, b); // Neither function c, nor b is included in the stack trace
  throw error;
}

a();
prepareStackTrace(Error, CallSite[])

See https://v8.dev/docs/stack-trace-api#customizing-stack-traces

Constructor Details

ProcessError(string, ProcessErrorOptions)

Creates a process error.

new ProcessError(message: string, options?: ProcessErrorOptions)

Parameters

message

string

A message that does not contain command arguments or output.

options
ProcessErrorOptions

Structured process failure details.

Property Details

code

The operating-system error code or process exit code.

code: null | string | number

Property Value

null | string | number

killed

Whether the process was killed.

killed: boolean

Property Value

boolean

signal

The signal that terminated the process.

signal: null | Signals

Property Value

null | Signals

stderr

Captured standard error, when available.

stderr: undefined | string | Buffer

Property Value

undefined | string | Buffer

stdout

Captured standard output, when available.

stdout: undefined | string | Buffer

Property Value

undefined | string | Buffer

Inherited Property Details

message 

message: string

Property Value

string

Inherited From Error.message

name 

name: string

Property Value

string

Inherited From Error.name

stack 

stack?: string

Property Value

string

Inherited From Error.stack

stackTraceLimit

The Error.stackTraceLimit property specifies the number of stack frames collected by a stack trace (whether generated by new Error().stack or Error.captureStackTrace(obj)).

The default value is 10 but may be set to any valid JavaScript number. Changes will affect any stack trace captured after the value has been changed.

If set to a non-number value, or set to a negative number, stack traces will not capture any frames.

static stackTraceLimit: number

Property Value

number

Inherited From Error.stackTraceLimit

Inherited Method Details

captureStackTrace(object, Function)

Creates a .stack property on targetObject, which when accessed returns a string representing the location in the code at which Error.captureStackTrace() was called.

const myObject = {};
Error.captureStackTrace(myObject);
myObject.stack;  // Similar to `new Error().stack`

The first line of the trace will be prefixed with ${myObject.name}: ${myObject.message}.

The optional constructorOpt argument accepts a function. If given, all frames above constructorOpt, including constructorOpt, will be omitted from the generated stack trace.

The constructorOpt argument is useful for hiding implementation details of error generation from the user. For instance:

function a() {
  b();
}

function b() {
  c();
}

function c() {
  // Create an error without stack trace to avoid calculating the stack trace twice.
  const { stackTraceLimit } = Error;
  Error.stackTraceLimit = 0;
  const error = new Error();
  Error.stackTraceLimit = stackTraceLimit;

  // Capture the stack trace above function b
  Error.captureStackTrace(error, b); // Neither function c, nor b is included in the stack trace
  throw error;
}

a();

static function captureStackTrace(targetObject: object, constructorOpt?: Function)

Parameters

targetObject

object

constructorOpt

Function

Inherited From Error.captureStackTrace

prepareStackTrace(Error, CallSite[])

See https://v8.dev/docs/stack-trace-api#customizing-stack-traces

static function prepareStackTrace(err: Error, stackTraces: CallSite[]): any

Parameters

err

Error

stackTraces

CallSite[]

Returns

any

Inherited From Error.prepareStackTrace