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6 changes: 6 additions & 0 deletions framework/view/ssr/ssr.go
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ import (
"github.com/livebud/bud/internal/gotemplate"
"github.com/livebud/bud/package/budfs"
"github.com/livebud/bud/package/gomod"
"github.com/livebud/bud/package/vfs"
)

// Response from evaluating SSR files
Expand Down Expand Up @@ -49,6 +50,11 @@ type Compiler struct {

func (c *Compiler) Compile(ctx context.Context, fsys budfs.FS) ([]byte, error) {
dir := c.module.Directory()

if existCss := vfs.Exist(fsys, "public/default.css"); nil == existCss {
svelteRuntime = strings.Replace(svelteRuntime, `<!-- default css -->`, `<link rel="stylesheet" href="default.css">`, 1)
}

result := esbuild.Build(esbuild.BuildOptions{
EntryPointsAdvanced: []esbuild.EntryPoint{
{
Expand Down
75 changes: 75 additions & 0 deletions framework/view/ssr/ssr_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,81 @@ func TestSvelteHello(t *testing.T) {
is.True(strings.Contains(res.Body, `<h1>hi world</h1>`))
}

func TestSvelteRemoveDefaultCss(t *testing.T) {
is := is.New(t)
log := testlog.New()
ctx := context.Background()
dir := t.TempDir()
td := testdir.New(dir)
td.Files["view/index.svelte"] = `<h1>hi world</h1>`
td.NodeModules["svelte"] = versions.Svelte
is.NoErr(td.Write(ctx))
vm, err := v8.Load()
is.NoErr(err)
svelteCompiler, err := svelte.Load(vm)
is.NoErr(err)
transformer := transformrt.MustLoad(svelte.NewTransformable(svelteCompiler))
module, err := gomod.Find(dir)
is.NoErr(err)
bfs := budfs.New(module, log)
is.NoErr(err)
bfs.FileGenerator("bud/view/_ssr.js", ssr.New(module, transformer.SSR))
// Read the wrapped version of index.svelte with node_modules rewritten
code, err := fs.ReadFile(bfs, "bud/view/_ssr.js")
is.NoErr(err)
is.True(strings.Contains(string(code), `create_ssr_component(`))
is.True(strings.Contains(string(code), `<h1>hi world</h1>`))
is.True(strings.Contains(string(code), `views["/"] = `))
result, err := vm.Eval("render.js", string(code)+`; bud.render("/", {})`)
is.NoErr(err)
var res ssr.Response
err = json.Unmarshal([]byte(result), &res)
is.NoErr(err)
is.Equal(res.Status, 200)
is.Equal(len(res.Headers), 1)
is.Equal(res.Headers["Content-Type"], "text/html")
// svelte must not linked to default.css when removed
is.True(!strings.Contains(res.Body, `<link rel="stylesheet" href="default.css">`))
is.True(strings.Contains(res.Body, `<!-- default css -->`))
}

func TestSvelteDefaultCss(t *testing.T) {
is := is.New(t)
log := testlog.New()
ctx := context.Background()
dir := t.TempDir()
td := testdir.New(dir)
td.Files["view/index.svelte"] = `<h1>hi world</h1>`
td.Files["public/default.css"] = `.body{}`
td.NodeModules["svelte"] = versions.Svelte
is.NoErr(td.Write(ctx))
vm, err := v8.Load()
is.NoErr(err)
svelteCompiler, err := svelte.Load(vm)
is.NoErr(err)
transformer := transformrt.MustLoad(svelte.NewTransformable(svelteCompiler))
module, err := gomod.Find(dir)
is.NoErr(err)
bfs := budfs.New(module, log)
is.NoErr(err)
bfs.FileGenerator("bud/view/_ssr.js", ssr.New(module, transformer.SSR))
// Read the wrapped version of index.svelte with node_modules rewritten
code, err := fs.ReadFile(bfs, "bud/view/_ssr.js")
is.NoErr(err)
is.True(strings.Contains(string(code), `create_ssr_component(`))
is.True(strings.Contains(string(code), `<h1>hi world</h1>`))
is.True(strings.Contains(string(code), `views["/"] = `))
result, err := vm.Eval("render.js", string(code)+`; bud.render("/", {})`)
is.NoErr(err)
var res ssr.Response
err = json.Unmarshal([]byte(result), &res)
is.NoErr(err)
is.Equal(res.Status, 200)
is.Equal(len(res.Headers), 1)
is.Equal(res.Headers["Content-Type"], "text/html")
is.True(strings.Contains(res.Body, `<link rel="stylesheet" href="default.css">`))
}

func TestSvelteAwait(t *testing.T) {
is := is.New(t)
log := testlog.New()
Expand Down
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