Be able to compile to webassembly wasm

[rgl]

It would be pretty nice to be able to target wasm.

Currently with with go 1.21.5 and go-diskfs 1.4.0. a simple program that creates a FAT32 disk image, is failing as:

GOOS=wasip1 GOARCH=wasm go build -o amt-setupbin-img.wasm

# gopkg.in/djherbis/times.v1
../../../../go/pkg/mod/gopkg.in/djherbis/times.v1@v1.3.0/times.go:11:9: undefined: getTimespec
../../../../go/pkg/mod/gopkg.in/djherbis/times.v1@v1.3.0/times.go:21:9: undefined: getTimespec
# github.com/sirupsen/logrus
../../../../go/pkg/mod/github.com/sirupsen/logrus@v1.9.3/terminal_check_notappengine.go:13:10: undefined: isTerminal
# github.com/diskfs/go-diskfs/filesystem/squashfs
../../../../go/pkg/mod/github.com/diskfs/go-diskfs@v1.4.0/filesystem/squashfs/finalize.go:463:22: undefined: getFileProperties
../../../../go/pkg/mod/github.com/diskfs/go-diskfs@v1.4.0/filesystem/squashfs/finalize.go:1177:25: undefined: getDeviceNumbers
../../../../go/pkg/mod/github.com/diskfs/go-diskfs@v1.4.0/filesystem/squashfs/finalize.go:1202:25: undefined: getDeviceNumbers

[deitch]

It would be nice, indeed, to have a wasm target for it (it also would be nice if this didn't auto-correct "wasm" to "warm" 😁 ).

Of the issues you raised:

• getFileProperties and getDeviceNumbers: these have platform-specific functions, defined in finalize_unix.go and finalize_windows.go. I do not know what the equivalent implementations for wasm would be; if you know, and want to add a finalize_wasm.go, I definitely would take that.
• getTimespec (from gopkg.in/djherbis/times.v1) - this one actually has some wasm support in v1.6.0, see times_wasip1.go. We can bump the dependency here to v1.6.0, which should solve it. Check it locally, and if that issue goes away, open the PR on this.
• isTerminal (from github.com/sirupsen/logrus) is called here, and is defined on each platform: solaris, unix and windows. We have the latest semver, which does not have wasm support, but it looks like master branch does here. Go ahead and open a PR to bump this to latest. FYI, someone had a compilation issue, documented here.

[rgl]

Thank you! I will look into your suggestions and will report back!

[rgl]

@deitch got it working at https://github.com/diskfs/go-diskfs/pull/208 :-)

please take a look.