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add support for esbuild loaders by extension

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This commit is contained in:
Brian Leishman 2024-09-25 12:00:32 -04:00
parent 0ea796dad1
commit 671b2f49bd
1 changed files with 57 additions and 0 deletions
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57
resources/resource_transformers/js/options.go
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@ -94,6 +94,14 @@ type Options struct {
// See https://esbuild.github.io/api/#jsx-import-source
JSXImportSource string
// Configuring a loader for a given file type lets you load that file type with an
// import statement or a require call. For example, configuring the .png file extension
// to use the data URL loader means importing a .png file gives you a data URL
// containing the contents of that image
//
// See https://esbuild.github.io/api/#loader
Loaders map[string]string
// There is/was a bug in WebKit with severe performance issue with the tracking
// of TDZ checks in JavaScriptCore.
//
@ -423,6 +431,53 @@ func toBuildOptions(opts Options) (buildOptions api.BuildOptions, err error) {
return
}
var loaders map[string]api.Loader
if opts.Loaders != nil {
loaders = make(map[string]api.Loader)
for k, v := range opts.Loaders {
// use the same stings as the esbuild cli.
// See https://github.com/evanw/esbuild/blob/d34e79e2a998c21bb71d57b92b0017ca11756912/internal/config/config.go#L208
switch strings.ToLower(v) {
case "none":
loaders[k] = api.LoaderNone
case "base64":
loaders[k] = api.LoaderBase64
case "binary":
loaders[k] = api.LoaderBinary
case "copy":
loaders[k] = api.LoaderFile
case "css":
loaders[k] = api.LoaderCSS
case "dataurl":
loaders[k] = api.LoaderDataURL
case "default":
loaders[k] = api.LoaderDefault
case "empty":
loaders[k] = api.LoaderEmpty
case "file":
loaders[k] = api.LoaderFile
case "global-css":
loaders[k] = api.LoaderGlobalCSS
case "js":
loaders[k] = api.LoaderJS
case "json":
loaders[k] = api.LoaderJSON
case "jsx":
loaders[k] = api.LoaderJSX
case "local-css":
loaders[k] = api.LoaderLocalCSS
case "text":
loaders[k] = api.LoaderText
case "ts":
loaders[k] = api.LoaderTS
case "tsx":
loaders[k] = api.LoaderTSX
default:
err = fmt.Errorf("unsupported loader type: %q", v)
}
}
}
buildOptions = api.BuildOptions{
Outfile: outFile,
Bundle: true,
@ -448,6 +503,8 @@ func toBuildOptions(opts Options) (buildOptions api.BuildOptions, err error) {
Tsconfig: opts.tsConfig,
Loader: loaders,
// Note: We're not passing Sourcefile to ESBuild.
// This makes ESBuild pass `stdin` as the Importer to the import
// resolver, which is what we need/expect.