tinygo 0.26.0 doesn't build docs example

[juliaogris]

After the upgrade from tiny go 0.25.0 to 0.26.0 and can't get the WASM example from the docs https://tinygo.org/docs/guides/webassembly/ to build anymore:

$ tinygo version
tinygo version 0.25.0 darwin/amd64 (using go version go1.19 and LLVM version 14.0.0)
$ tinygo build -o wasm.wasm -target wasm ./main.go # ✅

# upgrade....

$ tinygo version
tinygo version 0.26.0 darwin/amd64 (using go version go1.19.3 and LLVM version 14.0.0)
$ tinygo build -o wasm.wasm -target wasm ./main.go  # 💥
tinygo:wasm-ld: error: /var/folders/43/6hgjz_r92gv_c5mbtjx2fj5r0000gn/T/tinygo3399452899/main.o: undefined symbol: main.add
failed to run tool: wasm-ld
error: failed to link /var/folders/43/6hgjz_r92gv_c5mbtjx2fj5r0000gn/T/tinygo3399452899/main: exit status 1

This has also been reproduced on GitHub Actions:
successful build with 0.25.0 (go 1.19.3), failed build with 0.26.0 (go 1.19.3)
https://github.com/juliaogris/tinygo-test/actions

Upgrade commit:
juliaogris/tinygo-test@64bea1d

[sago35]

@juliaogris
I think the document needs to be updated.
Would adding //export add solve the problem?

see #3133

[juliaogris]

Yes! that worked, thank you, @sago35.

In order to get the whole docs sample to work I believe another change needs to happen in JS:

go.importObject.env = {
    'main.add': function(x, y) {
        return x + y
    }
    // ... other functions
}

needs to have main. removed:

go.importObject.env = {
    'add': function(x, y) {
        return x + y
    }
    // ... other functions
}

[deadprogram]

I think that was addressed already in a previous release. Please reopen if needed. Thanks!