Add Data.Artifacts to css.Build and js.Build

Artifacts are the additional output files published as part of the build:
source maps and files emitted by ESBuild's file loader (e.g. fonts). Each
artifact provides Permalink, RelPermalink and MediaType, so e.g. font
preload links can be constructed in templates.

Also add media type definitions for source maps (application/source-map),
font/woff and font/woff2.

Fixes #15173

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Bjørn Erik Pedersen
2026-08-08 13:23:24 +02:00
parent 2ffaf1fc1e
commit 44da086082
7 changed files with 182 additions and 6 deletions
+11 -2
View File
@@ -21,6 +21,7 @@ type BuiltinTypes struct {
TextType Type
TOMLType Type
YAMLType Type
SourceMapType Type
// Common image types
PNGType Type
@@ -36,6 +37,8 @@ type BuiltinTypes struct {
// Common font types
TrueTypeFontType Type
OpenTypeFontType Type
WOFFFontType Type
WOFF2FontType Type
// Common document types
PDFType Type
@@ -80,6 +83,7 @@ var Builtin = BuiltinTypes{
TextType: Type{Type: "text/plain"},
TOMLType: Type{Type: "application/toml"},
YAMLType: Type{Type: "application/yaml"},
SourceMapType: Type{Type: "application/source-map"},
// Common image types
PNGType: Type{Type: "image/png"},
@@ -95,6 +99,8 @@ var Builtin = BuiltinTypes{
// Common font types
TrueTypeFontType: Type{Type: "font/ttf"},
OpenTypeFontType: Type{Type: "font/otf"},
WOFFFontType: Type{Type: "font/woff"},
WOFF2FontType: Type{Type: "font/woff2"},
// Common document types
PDFType: Type{Type: "application/pdf"},
@@ -139,6 +145,7 @@ var defaultMediaTypesConfig = map[string]any{
"text/plain": map[string]any{"suffixes": []string{"txt"}},
"application/toml": map[string]any{"suffixes": []string{"toml"}},
"application/yaml": map[string]any{"suffixes": []string{"yaml", "yml"}},
"application/source-map": map[string]any{"suffixes": []string{"map"}},
// Common image types
"image/png": map[string]any{"suffixes": []string{"png"}},
@@ -152,8 +159,10 @@ var defaultMediaTypesConfig = map[string]any{
"image/heic": map[string]any{"suffixes": []string{"heic"}},
// Common font types
"font/ttf": map[string]any{"suffixes": []string{"ttf"}},
"font/otf": map[string]any{"suffixes": []string{"otf"}},
"font/ttf": map[string]any{"suffixes": []string{"ttf"}},
"font/otf": map[string]any{"suffixes": []string{"otf"}},
"font/woff": map[string]any{"suffixes": []string{"woff"}},
"font/woff2": map[string]any{"suffixes": []string{"woff2"}},
// Common document types
"application/pdf": map[string]any{"suffixes": []string{"pdf"}},
+4 -1
View File
@@ -142,6 +142,9 @@ func TestDefaultTypes(t *testing.T) {
{Builtin.PDFType, "application", "pdf", "pdf", "application/pdf", "application/pdf"},
{Builtin.TrueTypeFontType, "font", "ttf", "ttf", "font/ttf", "font/ttf"},
{Builtin.OpenTypeFontType, "font", "otf", "otf", "font/otf", "font/otf"},
{Builtin.WOFFFontType, "font", "woff", "woff", "font/woff", "font/woff"},
{Builtin.WOFF2FontType, "font", "woff2", "woff2", "font/woff2", "font/woff2"},
{Builtin.SourceMapType, "application", "source-map", "map", "application/source-map", "application/source-map"},
} {
c.Assert(test.tp.MainType, qt.Equals, test.expectedMainType)
c.Assert(test.tp.SubType, qt.Equals, test.expectedSubType)
@@ -151,5 +154,5 @@ func TestDefaultTypes(t *testing.T) {
}
c.Assert(len(DefaultTypes), qt.Equals, 44)
c.Assert(len(DefaultTypes), qt.Equals, 47)
}
+50
View File
@@ -0,0 +1,50 @@
// Copyright 2025 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package resources
import (
"github.com/gohugoio/hugo/media"
"github.com/gohugoio/hugo/resources/resource"
)
// Artifact represents an additional output file published as part of a
// resource transformation, e.g. a source map or a file emitted by ESBuild's
// file loader. It is exposed to templates via Resource.Data.Artifacts.
type Artifact interface {
resource.MediaTypeProvider
resource.ResourceLinksProvider
}
// NewArtifact creates a new Artifact with the given permalinks and media type.
func NewArtifact(permalink, relPermalink string, mediaType media.Type) Artifact {
return &artifact{permalink: permalink, relPermalink: relPermalink, mediaType: mediaType}
}
type artifact struct {
permalink string
relPermalink string
mediaType media.Type
}
func (a *artifact) MediaType() media.Type {
return a.mediaType
}
func (a *artifact) Permalink() string {
return a.permalink
}
func (a *artifact) RelPermalink() string {
return a.relPermalink
}
@@ -18,12 +18,15 @@ import (
"path"
"path/filepath"
"regexp"
"sort"
"strings"
"github.com/evanw/esbuild/pkg/api"
"github.com/gohugoio/hugo/common/paths"
"github.com/gohugoio/hugo/helpers"
"github.com/gohugoio/hugo/hugolib/filesystems"
"github.com/gohugoio/hugo/internal/js/esbuild"
"github.com/gohugoio/hugo/media"
"github.com/gohugoio/hugo/resources"
"github.com/gohugoio/hugo/resources/resource"
@@ -87,9 +90,27 @@ func (c *Client) transform(opts esbuild.Options, transformCtx *resources.Resourc
hasLinkedSourceMap := opts.ExternalOptions.SourceMap == "linked"
hasSourceMap := hasLinkedSourceMap || opts.ExternalOptions.SourceMap == "external"
spec := c.c.Spec()
mediaTypes := spec.MediaTypes()
baseURL := spec.Cfg.BaseURL().WithoutPath
newArtifact := func(relPermalink, fileName string) resources.Artifact {
mt, _, found := mediaTypes.GetFirstBySuffix(strings.TrimPrefix(path.Ext(fileName), "."))
if !found {
mt = media.Builtin.OctetType
}
return resources.NewArtifact(baseURL+relPermalink, relPermalink, mt)
}
fileLoaderRelPermalink := func(base string) string {
if opts.PublicPath != "" {
return strings.TrimSuffix(opts.PublicPath, "/") + "/" + paths.PathEscape(base)
}
return pathSpec.GetBasePath(false) + paths.PathEscape(paths.AddLeadingSlash(path.Join(outDir, base)))
}
// Classify output files by path rather than relying on array ordering,
// which esbuild does not guarantee.
var mainOutput []byte
var artifacts []resources.Artifact
for _, file := range result.OutputFiles {
basePath := path.Base(filepath.ToSlash(file.Path))
if strings.HasSuffix(basePath, ".map") {
@@ -97,6 +118,7 @@ func (c *Client) transform(opts esbuild.Options, transformCtx *resources.Resourc
if err = transformCtx.PublishSourceMap(file.Contents); err != nil {
return result, err
}
artifacts = append(artifacts, newArtifact(pathSpec.GetBasePath(false)+paths.PathEscape(paths.AddLeadingSlash(transformCtx.OutPath+".map")), basePath))
}
} else if isStdinEntryOutput(basePath) {
mainOutput = file.Contents
@@ -105,9 +127,13 @@ func (c *Client) transform(opts esbuild.Options, transformCtx *resources.Resourc
if err = publishFileLoaderArtifact(pathSpec, opts.PublicPath, outDir, basePath, file.Contents, transformCtx); err != nil {
return result, err
}
artifacts = append(artifacts, newArtifact(fileLoaderRelPermalink(basePath), basePath))
}
}
sort.Slice(artifacts, func(i, j int) bool { return artifacts[i].RelPermalink() < artifacts[j].RelPermalink() })
transformCtx.Data["Artifacts"] = artifacts
if mainOutput == nil {
return result, fmt.Errorf("esbuild: entry point output not found")
}
@@ -78,6 +78,42 @@ JS Content:{{ $js.Content }}:End:
})
}
// Issue #15173.
func TestBuildDataArtifacts(t *testing.T) {
t.Parallel()
files := `
-- hugo.toml --
baseURL = "https://example.org/"
disableKinds=["page", "section", "taxonomy", "term", "sitemap", "robotsTXT"]
-- assets/js/main.js --
import { hello } from './util';
hello();
-- assets/js/util.js --
export function hello() {
return 'abcd';
}
-- layouts/home.html --
{{ with resources.Get "js/main.js" | js.Build (dict "minify" true "sourcemap" "external") }}
COUNT: {{ len .Data.Artifacts }}
{{ range .Data.Artifacts }}
ARTIFACT: {{ .RelPermalink }}|{{ .Permalink }}|{{ .MediaType.Type }}
{{ end }}
{{ end }}
{{ with resources.Get "js/main.js" | js.Build }}
COUNT2: {{ len .Data.Artifacts }}
{{ end }}
`
b := hugolib.Test(t, files, hugolib.TestOptOsFs())
b.AssertFileContent("public/index.html",
"COUNT: 1",
"ARTIFACT: /js/main.js.map|https://example.org/js/main.js.map|application/source-map",
"COUNT2: 0",
)
b.AssertFileExists("public/js/main.js.map", true)
}
func TestBuildWithModAndNpm(t *testing.T) {
if !htesting.IsCI() {
t.Skip("skip (relative) long running modules test when running locally")
+4 -3
View File
@@ -129,11 +129,12 @@ type ResourceTransformationCtx struct {
// The media type of the transformed resource.
OutMediaType media.Type
// Data data can be set on the transformed Resource. Not that this need
// to be simple types, as it needs to be serialized to JSON and back.
// Data can be set on the transformed Resource. For transformations
// cached to disk (see transformationsToCacheOnDisk), this needs to be
// simple types, as it will be serialized to JSON and back.
Data map[string]any
// This is used to publish additional artifacts, e.g. source hhmaps.
// This is used to publish additional artifacts, e.g. source maps.
// We may improve this.
OpenResourcePublisher func(relTargetPath string) (io.WriteCloser, error)
}
+51
View File
@@ -458,6 +458,8 @@ fakefontdata
{{ with . | css.Build (dict "minify" true) }}
INLINE: <style>{{ .Content | safeCSS }}</style>
LINKED: <link rel="stylesheet" href="{{ .RelPermalink }}" />
{{ range .Data.Artifacts }}ARTIFACT: {{ .RelPermalink }}|{{ .MediaType.Type }}
{{ end }}
{{ end }}
{{ end }}
`
@@ -471,6 +473,9 @@ LINKED: <link rel="stylesheet" href="{{ .RelPermalink }}" />
b.AssertFileContent("public/fr/css/main.css", `url("/docs/css/ComicNeue-Regular-`)
b.AssertPublishDir("en/css/ComicNeue-Regular-UA4ODE7N.ttf")
b.AssertPublishDir("fr/docs/css/ComicNeue-Regular-UA4ODE7N.ttf")
// The artifact URL is the same on every host. See issue #15173.
b.AssertFileContent("public/en/index.html", "ARTIFACT: /docs/css/ComicNeue-Regular-UA4ODE7N.ttf|font/ttf")
b.AssertFileContent("public/fr/index.html", "ARTIFACT: /docs/css/ComicNeue-Regular-UA4ODE7N.ttf|font/ttf")
}
t.Run("en first", func(t *testing.T) {
@@ -486,6 +491,52 @@ LINKED: <link rel="stylesheet" href="{{ .RelPermalink }}" />
})
}
// Issue #15173.
func TestCSSBuildDataArtifacts(t *testing.T) {
t.Parallel()
files := `
-- hugo.toml --
baseURL = "https://example.org/mysite/"
disableKinds = ['page','rss','section','sitemap','taxonomy','term']
-- assets/css/main.css --
@import "/fonts/fonts.css";
body { color: #222; }
-- assets/fonts/fonts.css --
@font-face {
font-family: 'Comic Neue';
src: url(ComicNeue-Regular.woff2) format('woff2'), url(ComicNeue-Regular.ttf) format('truetype');
}
-- assets/fonts/ComicNeue-Regular.ttf --
fakefontdata
-- assets/fonts/ComicNeue-Regular.woff2 --
fakefontdata2
-- layouts/home.html --
{{ with resources.Get "css/main.css" }}
{{ with . | css.Build (dict "minify" true "sourcemap" "external") }}
{{ range .Data.Artifacts }}
ARTIFACT: {{ .RelPermalink }}|{{ .Permalink }}|{{ .MediaType.Type }}
{{ end }}
{{ range .Data.Artifacts }}{{ if eq .MediaType.MainType "font" }}
<link rel="preload" href="{{ .RelPermalink }}" as="font" type="{{ .MediaType.Type }}" crossorigin>
{{ end }}{{ end }}
<link rel="stylesheet" href="{{ .RelPermalink }}">
{{ end }}
{{ end }}
`
b := hugolib.Test(t, files, hugolib.TestOptOsFs())
b.AssertFileContent("public/index.html",
"ARTIFACT: /mysite/css/main.css.map|https://example.org/mysite/css/main.css.map|application/source-map",
".ttf|https://example.org/mysite/css/ComicNeue-Regular-",
".woff2|https://example.org/mysite/css/ComicNeue-Regular-",
"|font/ttf",
"|font/woff2",
`as="font" type="font/woff2" crossorigin`,
)
b.AssertFileExists("public/css/main.css.map", true)
}
// Issue #14623
func TestCSSBuildLoadersPartial(t *testing.T) {
t.Parallel()