transform transforms the given code with the given options.
(options *ResolvedTransformOptions)
| 35 | |
| 36 | // transform transforms the given code with the given options. |
| 37 | func transform(options *ResolvedTransformOptions) (out *TransformOutput, err error) { |
| 38 | target := esbuild.ESNext |
| 39 | if options.Target != "" { |
| 40 | if t, ok := targets[options.Target]; ok { |
| 41 | target = t |
| 42 | } else { |
| 43 | err = errors.New("invalid target") |
| 44 | return |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | loader := esbuild.LoaderJS |
| 49 | sourceCode := options.Code |
| 50 | jsxImportSource := options.JSXImportSource |
| 51 | importMap := options.importMap |
| 52 | |
| 53 | if options.Lang == "" && options.Filename != "" { |
| 54 | filename, _ := utils.SplitByFirstByte(options.Filename, '?') |
| 55 | _, basename := utils.SplitByLastByte(filename, '/') |
| 56 | _, options.Lang = utils.SplitByLastByte(basename, '.') |
| 57 | } |
| 58 | switch options.Lang { |
| 59 | case "js": |
| 60 | loader = esbuild.LoaderJS |
| 61 | case "jsx": |
| 62 | loader = esbuild.LoaderJSX |
| 63 | case "ts": |
| 64 | loader = esbuild.LoaderTS |
| 65 | case "tsx": |
| 66 | loader = esbuild.LoaderTSX |
| 67 | case "css": |
| 68 | loader = esbuild.LoaderCSS |
| 69 | default: |
| 70 | err = errors.New("unsupported language:" + options.Lang) |
| 71 | return |
| 72 | } |
| 73 | |
| 74 | if jsxImportSource == "" && (loader == esbuild.LoaderJSX || loader == esbuild.LoaderTSX) && importMap != nil { |
| 75 | for _, key := range importMap.Imports.Keys() { |
| 76 | if before, ok := strings.CutSuffix(key, "/jsx-runtime"); ok { |
| 77 | jsxImportSource = before |
| 78 | break |
| 79 | } |
| 80 | } |
| 81 | if jsxImportSource == "" { |
| 82 | for _, key := range []string{"react/", "preact/", "solid-js/", "mono-jsx/dom/", "mono-jsx/", "vue/"} { |
| 83 | if importMap.Imports.Has(key) { |
| 84 | jsxImportSource = strings.TrimSuffix(key, "/") |
| 85 | break |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | if jsxImportSource == "" { |
| 90 | jsxImportSource = "react" |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | sourceMap := esbuild.SourceMapNone |
no test coverage detected