blankerr

blankerr is check blank err return values and check call function without error handling

Install

$ go install github.com/kimuson13/blankerr/cmd/blankerr@latest

How to use

If you want to check error with a package, give th e package path of interst as the first argument:

$ blankerr github.com/kimuson13/blankerr

To check all package beneath the current directory:

$ blankerr ./...

Demo

If you create such a Go file bellow

$ ls
a.go
$ cat a.go
package a

import "errors"

func hoge() (string, error) {
    return "hoge", errors.New("hoge")
}

func fuga() {
    h, _ := hoge()
    print(h)
}

func fuga() ignores error in return values of hoge(). We need to handle this error. So use blankerr like that.

$ blankerr a
a/a.go:16:9 hoge has error type in return values

blankerr help error handling

Feature Outlook

not check some standard libraly

Some standard library that have an error return type but are documented to never return an error(eg: fmt.Print())
So, I want to ignore these functions.