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Add support for passing a custom importmap to the tag helper #187

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Merged
merged 3 commits into from
Jun 18, 2023
Merged

Add support for passing a custom importmap to the tag helper #187

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4b06c24
Add support for passing a custom importmap to the tag helper
elia Jun 14, 2023
997f30b
Work around JSPM mysteriously returning 503 from CI
elia Jun 14, 2023
f59715b
Update packager.rb
dhh Jun 18, 2023
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8 changes: 4 additions & 4 deletions app/helpers/importmap/importmap_tags_helper.rb
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Original file line number Diff line number Diff line change
@@ -1,9 +1,9 @@
module Importmap::ImportmapTagsHelper
# Setup all script tags needed to use an importmap-powered entrypoint (which defaults to application.js)
def javascript_importmap_tags(entry_point = "application", shim: true)
def javascript_importmap_tags(entry_point = "application", shim: true, importmap: Rails.application.importmap)
safe_join [
javascript_inline_importmap_tag,
javascript_importmap_module_preload_tags,
javascript_inline_importmap_tag(importmap.to_json(resolver: self)),
javascript_importmap_module_preload_tags(importmap),
(javascript_importmap_shim_nonce_configuration_tag if shim),
(javascript_importmap_shim_tag if shim),
javascript_import_module_tag(entry_point)
Expand Down Expand Up @@ -34,7 +34,7 @@ def javascript_importmap_shim_tag(minimized: true)
# Import a named JavaScript module(s) using a script-module tag.
def javascript_import_module_tag(*module_names)
imports = Array(module_names).collect { |m| %(import "#{m}") }.join("\n")
tag.script imports.html_safe,
tag.script imports.html_safe,
type: "module", nonce: request&.content_security_policy_nonce
end

Expand Down
14 changes: 14 additions & 0 deletions test/importmap_tags_helper_test.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -55,4 +55,18 @@ def content_security_policy_nonce
ensure
@request = nil
end

test "using a custom importmap" do
importmap = Importmap::Map.new
importmap.pin "foo", preload: true
importmap.pin "bar", preload: false
importmap_html = javascript_importmap_tags("foo", importmap: importmap)

assert_includes importmap_html, %{<script type="importmap" data-turbo-track="reload">}
assert_includes importmap_html, %{"foo": "/foo.js"}
assert_includes importmap_html, %{"bar": "/bar.js"}
assert_includes importmap_html, %{<link rel="modulepreload" href="/foo.js">}
refute_includes importmap_html, %{<link rel="modulepreload" href="/bar.js">}
assert_includes importmap_html, %{<script type="module">import "foo"</script>}
end
end