Promisify sync, async or generator function, using [relike][]. Kind of promisify, but lower level. Full compatibility with [co][]4 and passing 100% of its tests.

kind-of-extra

Additional functionality to [kind-of][] type check utility. Support promises, generators, streams, errors.

error-extractor

Extract error message from an object using known error properties.

@stdlib/error-tools-id2msg

Return an error message corresponding to a provided two-character error identifier.

@stdlib/error-tools-fmtprodmsg-factory

Return a function which formats an error message for production.

@stdlib/math-base-special-expm1rel

Relative error exponential.

exception

Generate heap dumps and detailed output for uncaught exceptions and critical errors

@hazae41/latrine

Secure and private reimplementation of the WalletConnect protocol

d.jserror

A simple module to make showing users an error easier

@stdlib/assert-is-syntax-error

Test if a value is a SyntaxError object.

resulta

resulta is a TypeScript utility for handling results in an expressive way, inspired by Rust's Result type.

@stdlib/assert-is-reference-error

Test if a value is a ReferenceError object.

errnext

Generic middleware based on (err, next, ...args) pattern.

nexterr

Generic middleware based on (next, err, ...args) pattern.

@sullux/fp-light-trap

A lightweight functional library for functional composition and object composition.

callback-handler

This is a utility package to handle errors and unwanted results automatically. It is used to improve readability of code and simplify working with callbacks.

code-err

create error instances with a code (and props)

@stdlib/math-iter-special-expm1rel

Create an iterator which evaluates the relative error exponential for each iterated value.

Error handling and extras for `.use` and `.run` methods of your Base apps. Modifies `.use` method to be able to 1) accept array of functions, 2) options object as second argument. Emits `error` event if some plugin fails.

react-results-proptypes

proptype validators for results instances

http-staror

Makes easy to use HTTP status and errors.

to-callback

Converts result-first callbacks to classic (node.js-style) error-first callbacks with 3 lines of code. Useful when you want to promisify result-first APIs (like emitter.on). Inspired by [rfpify][] and probably used in it.

error-shortener

generates a string containing a message and trimmed stack from error

verror-without-sprintf

richer JavaScript errors, but without sprintf

@burdzin/coded-error

Create error instances with a code, status, etc.

error-format

Allows you to customize the toString method of passed `err`. Also adds useful properties like `line`, `filename` and `column` to the `err` object.

taperr

tape error events for t.fail(msg)

binford-err

Not so strongly typed error

@ghaerdi/rustify

A TypeScript library implementing Rust-like error handling with Result, Ok, and Err types.

httpstatusview

Displays http status in browser, good for error handling.

custom-err

Easily create an error with custom properties attached.

errd

Collection of error handling utilities for JavaScript and TypeScript.

@scottnonnenberg/notate

Extra err.stack entries for debuggability. Better than your plain 'if (err) { return cb(err) }'

jm-err

common error defines as JSON format

catchup

Graceful error handling. Because core `domain` module is deprecated. This share almost the same API.

if-err

get rid of `if (err) throw err`

error-handler-sails-js

module for error handling in sailsjs, firts version

perr

Portable errors for Javascript

ercb

For those who don't like the node (er, result) convention

clean-stack--tmp-fork-by-jblew-browser-support

Clean up error stack traces

@gotoeasy/err

一个用于node环境的Error子类，提供更丰富的构造参数接口，更友好的code-frame提示，消息拼接等功能，详见Sample截图

error-clean-stack

errors with clean stacks

@stdlib/assert-is-uri-error

Test if a value is a URIError object.

@andrejewski/result

Result type

throwandtell

ThrowAndTell Error Reporter Client for Node.js

err-loggr

This is a small lib to help create and manage log files

error_handler_sails-js

module for error handling in sailsjs, firts version

eros

A lightweight set of error utilities for node.js

gh-logger

This module logs errors that you give it to log.

inl-error

test err handler

neverthrow-pattern

<h1 align="center">Neverthrow-Pattern</h1>

flawless

A callback factory which splits away handling errors into a separate flow and thus requiring less boilerplate code.

jsonerr

Function to get JSON friendly object from error (Node/V8 only).

on-err

A callback wrapper library that reduces the number of checks needed to propagate errors up the callback chain

@stdlib/error-reviver

Revive a JSON-serialized error object.

electron-clean-logging

strips Electron/Chromium logs from stderr

@stdlib/error-tools-msg2id-cli

Return a two-character error identifier corresponding to a provided error message.

errfly

handle callback err with node style

verror-2

verror that also works for browsers and react-native

errlogging

a javascript library to log errors

@ts-fun/result

Result in TypeScript

@stdlib/error-tools-id2msg-cli

Return an error message corresponding to a provided two-character error identifier.

oker

A version of Rust's result type in Typescript, which can be Ok or Err (oker)

forcereq

Require module but with error handeling

itmao-rescc

提供了响应错误信息的中间件

@stdlib/assert-is-eval-error

Test if a value is an EvalError object.