initial commits

LICENSE

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+Copyright (c) 2021 Charles Iliya Krempeaux :: http://changelog.ca/
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

README.md

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+# go-fck
+
+Package **fck** implements tools to create and manipulate errors.
+
+## Documention
+
+Online documentation, which includes examples, can be found at: http://godoc.org/github.com/reiver/go-fck
+
+[![GoDoc](https://godoc.org/github.com/reiver/go-fck?status.svg)](https://godoc.org/github.com/reiver/go-fck)
+
+## Creating Errors
+
+There are two ways to create errors —
+
+With `fck.Error`:
+```
+	const err error = fck.Error("internal-error")
+```
+And with `fck.Errorf`:
+```
+	const err error = fck.Errorf("bad value for id %q", id)
+```
+
+**One thing to notice is that `fck.Error` errors can be a Go `const`.**

error.go

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+package fck
+
+type Error string
+
+func (receiver Error) Error() string {
+	return string(receiver)
+}
+
+var _ error = Error("")

errorf.go

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+package fck
+
+import (
+	"fmt"
+)
+
+func Errorf(format string, a ...interface{}) error {
+
+	var s string =fmt.Sprintf(format, a...)
+
+	return Error(s)
+}

go.mod

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+module github.com/reiver/go-fck
+
+go 1.17