Packages/err/As

Node: http-errorsgithub.com/sahilkhaire/gox/err

As

Overview

As finds the first error in the chain assignable to target.

Part of the err package — Node.js analog: http-errors.

Signature

func As(err error, target any) bool

Compare: Node.js · Standard Go · gox

Node.js

// Typical http-errors pattern in Node.js

Standard Go

errors.Is(err, target)
errors.As(err, &target)
fmt.Errorf("context: %w", err)

gox

import "github.com/sahilkhaire/gox/err"

var appErr err.AppError
if err.As(err, &appErr) { /* ... */ }

Example

import "github.com/sahilkhaire/gox/err"

var appErr err.AppError
if err.As(err, &appErr) { /* ... */ }

Tips

Import github.com/sahilkhaire/gox/err and call As directly. See the comparison below for the standard library equivalent.

Standard library alternative

Use the standard library directly:

errors.Is(err, target)
errors.As(err, &target)
fmt.Errorf("context: %w", err)

Related APIs

Is

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