Why Am I Getting 'undeclared name: any' in Go 1.18?

Undeclared Name "any" with Go 1.18: Resolving the Error

When utilizing the Go 1.18 toolchain, you may encounter the error "undeclared name: any (requires version go1.18 or later)" when attempting to employ the "any" keyword as an alternative to "interface{}." This error manifests because your project's "go.mod" file designates a Go version inferior to 1.18, such as "go 1.17."

To rectify this issue, simply modify your "go.mod" file to specify "go 1.18." This will guarantee that your project compiles with the requisite Go version, thereby resolving the error.

It is important to note that each module's "go.mod" file dictates the version of Go utilized during compilation. This allows developers to adopt new language features at their own pace. You can find further details regarding this process in the Go language changes design document.

For a live demonstration of this error, along with an editable "go.mod" file, explore the following Go playground: https://go.dev/play/p/au6TtTvNsRy

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