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* This file contains an esbuild loader for wyw-in-js.\n * It uses the transform.ts function to generate class names from source code,\n * returns transformed code without template literals and attaches generated source maps\n */\n\nimport { readFileSync } from 'fs';\nimport { dirname, isAbsolute, join, parse, posix } from 'path';\n\nimport type { Plugin, TransformOptions, Loader } from 'esbuild';\nimport { transformSync as esbuildTransformSync } from 'esbuild';\nimport {\n  transformSync as oxcTransformSync,\n  type TransformOptions as OxcTransformOptions,\n} from 'oxc-transform';\n\nimport type {\n  PluginOptions,\n  Preprocessor,\n  IFileReporterOptions,\n} from '@wyw-in-js/transform';\nimport {\n  disposeEvalBroker,\n  slugify,\n  transform,\n  TransformCacheCollection,\n  createFileReporter,\n  loadWywOptions,\n} from '@wyw-in-js/transform';\nimport {\n  asyncResolverFactory,\n  mergeOxcResolverAlias,\n  toNativeResolverAlias,\n} from '@wyw-in-js/shared';\n\ntype EsbuildPluginOptions = {\n  debug?: IFileReporterOptions | false | null | undefined;\n  esbuildOptions?: TransformOptions;\n  filter?: RegExp | string;\n  keepComments?: boolean | RegExp;\n  oxcTransform?: boolean;\n  prefixer?: boolean;\n  preprocessor?: Preprocessor;\n  sourceMap?: boolean;\n  transformLibraries?: boolean;\n} & Partial<PluginOptions>;\n\nconst supportedFilterFlags = new Set(['i', 'm', 's']);\n\nconst nodeModulesRegex = /^(?:.*[\\\\/])?node_modules(?:[\\\\/].*)?$/;\n\nexport default function wywInJS({\n  debug,\n  sourceMap,\n  keepComments,\n  oxcTransform,\n  prefixer,\n  preprocessor,\n  esbuildOptions,\n  filter = /\\.(js|jsx|ts|tsx)$/,\n  transformLibraries,\n  ...rest\n}: EsbuildPluginOptions = {}): Plugin {\n  let options = esbuildOptions;\n  const cache = new TransformCacheCollection();\n  const shouldRunOxcTransform = oxcTransform ?? false;\n  const resolvedWywOptions = shouldRunOxcTransform\n    ? loadWywOptions(rest)\n    : null;\n  const createAsyncResolver = asyncResolverFactory(\n    async (\n      resolved: {\n        errors: unknown[];\n        path: string;\n      },\n      token: string\n    ): Promise<string> => {\n      if (resolved.errors.length > 0) {\n        throw new Error(`Cannot resolve ${token}`);\n      }\n\n      return resolved.path.replace(/\\\\/g, posix.sep);\n    },\n    (what, importer) => [\n      what,\n      {\n        resolveDir: isAbsolute(importer)\n          ? dirname(importer)\n          : join(process.cwd(), dirname(importer)),\n        kind: 'import-statement',\n      },\n    ]\n  );\n  return {\n    name: 'wyw-in-js',\n    setup(build) {\n      const cssLookup = new Map<string, string>();\n      const cssResolveDirs = new Map<string, string>();\n      const warnedFilters = new Set<string>();\n      let warnedEmptyOxcOptions = false;\n      const nativeResolverAlias = toNativeResolverAlias(\n        build.initialOptions.alias\n      );\n\n      const { emitter, onDone } = createFileReporter(debug ?? false);\n\n      const warnOnUnsupportedFlags = (\n        filterRegexp: RegExp,\n        removedFlags: string,\n        sanitizedFlags: string\n      ) => {\n        const key = `${filterRegexp.source}/${filterRegexp.flags}`;\n        if (warnedFilters.has(key)) {\n          return;\n        }\n        warnedFilters.add(key);\n        const nextFlags = sanitizedFlags || 'none';\n        // eslint-disable-next-line no-console\n        console.warn(\n          `[wyw-in-js] Ignoring unsupported RegExp flags \"${removedFlags}\" ` +\n            `in esbuild filter /${filterRegexp.source}/${filterRegexp.flags}. ` +\n            `Using flags \"${nextFlags}\".`\n        );\n      };\n\n      const sanitizeFilter = (filterRegexp: RegExp): RegExp => {\n        const { flags } = filterRegexp;\n        const sanitizedFlags = flags\n          .split('')\n          .filter((flag) => supportedFilterFlags.has(flag))\n          .join('');\n        if (sanitizedFlags === flags) {\n          return filterRegexp;\n        }\n        const removedFlags = flags\n          .split('')\n          .filter((flag) => !supportedFilterFlags.has(flag))\n          .join('');\n        warnOnUnsupportedFlags(filterRegexp, removedFlags, sanitizedFlags);\n        return new RegExp(filterRegexp.source, sanitizedFlags);\n      };\n\n      const getOxcLang = (loader: Loader): OxcTransformOptions['lang'] => {\n        if (loader === 'tsx') return 'tsx';\n        if (loader === 'ts') return 'ts';\n        if (loader === 'jsx') return 'jsx';\n        return 'js';\n      };\n\n      const asyncResolve = createAsyncResolver(build.resolve);\n\n      build.onEnd(() => {\n        onDone(process.cwd());\n        disposeEvalBroker(cache);\n      });\n\n      build.onResolve({ filter: /\\.wyw\\.css$/ }, (args) => {\n        return {\n          namespace: 'wyw-in-js',\n          path: args.path,\n        };\n      });\n\n      build.onLoad({ filter: /.*/, namespace: 'wyw-in-js' }, (args) => {\n        return {\n          contents: cssLookup.get(args.path),\n          loader: 'css',\n          resolveDir: cssResolveDirs.get(args.path),\n        };\n      });\n\n      const filterRegexp =\n        typeof filter === 'string'\n          ? new RegExp(filter)\n          : sanitizeFilter(filter);\n\n      build.onLoad({ filter: filterRegexp }, async (args) => {\n        const rawCode = readFileSync(args.path, 'utf8');\n        const { ext, name: filename } = parse(args.path);\n        const loader = ext.replace(/^\\./, '') as Loader;\n\n        if (!transformLibraries && nodeModulesRegex.test(args.path)) {\n          return {\n            loader,\n            contents: rawCode,\n          };\n        }\n\n        if (!options) {\n          options = {};\n          if ('jsx' in build.initialOptions) {\n            options.jsx = build.initialOptions.jsx;\n          }\n          if ('jsxFactory' in build.initialOptions) {\n            options.jsxFactory = build.initialOptions.jsxFactory;\n          }\n          if ('jsxFragment' in build.initialOptions) {\n            options.jsxFragment = build.initialOptions.jsxFragment;\n          }\n          if ('jsxImportSource' in build.initialOptions) {\n            options.jsxImportSource = build.initialOptions.jsxImportSource;\n          }\n          if ('jsxDev' in build.initialOptions) {\n            options.jsxDev = build.initialOptions.jsxDev;\n          }\n          if ('jsxSideEffects' in build.initialOptions) {\n            options.jsxSideEffects = build.initialOptions.jsxSideEffects;\n          }\n        }\n\n        let codeForEsbuild = rawCode;\n        if (shouldRunOxcTransform) {\n          if (!resolvedWywOptions) {\n            throw new Error(\n              '[wyw-in-js] Internal error: oxcTransform is enabled but WyW options are not initialized'\n            );\n          }\n\n          const transformOptions = resolvedWywOptions.oxcOptions.transform as\n            | OxcTransformOptions\n            | undefined;\n          if (!transformOptions || !Object.keys(transformOptions).length) {\n            if (!warnedEmptyOxcOptions) {\n              warnedEmptyOxcOptions = true;\n              // eslint-disable-next-line no-console\n              console.warn(\n                '[wyw-in-js] oxcTransform is enabled but oxcOptions.transform is empty; skipping Oxc transform.'\n              );\n            }\n          } else {\n            let oxcResult;\n            try {\n              oxcResult = oxcTransformSync(args.path, codeForEsbuild, {\n                cwd: process.cwd(),\n                lang: getOxcLang(loader),\n                sourceType: 'module',\n                sourcemap: sourceMap,\n                ...transformOptions,\n              });\n            } catch (e) {\n              const message = e instanceof Error ? e.message : String(e);\n              throw new Error(\n                `[wyw-in-js] Oxc transform failed for ${args.path}: ${message}`\n              );\n            }\n\n            if (oxcResult.errors.length > 0) {\n              const details = oxcResult.errors\n                .map((error) =>\n                  error.codeframe\n                    ? `${error.message}\\n${error.codeframe}`\n                    : error.message\n                )\n                .join('\\n');\n              throw new Error(\n                `[wyw-in-js] Oxc transform failed for ${args.path}: ${details}`\n              );\n            }\n\n            codeForEsbuild = oxcResult.code;\n\n            if (sourceMap && oxcResult.map) {\n              const oxcMap = Buffer.from(\n                JSON.stringify(oxcResult.map)\n              ).toString('base64');\n              codeForEsbuild += `/*# sourceMappingURL=data:application/json;base64,${oxcMap}*/`;\n            }\n          }\n        }\n\n        const transformed = esbuildTransformSync(codeForEsbuild, {\n          ...options,\n          sourcefile: args.path,\n          sourcemap: sourceMap,\n          loader,\n        });\n        let { code } = transformed;\n\n        if (sourceMap) {\n          const esbuildMap = Buffer.from(transformed.map).toString('base64');\n          code += `/*# sourceMappingURL=data:application/json;base64,${esbuildMap}*/`;\n        }\n\n        const transformServices = {\n          options: {\n            filename: args.path,\n            pluginOptions: {\n              ...rest,\n              oxcOptions: mergeOxcResolverAlias(\n                rest.oxcOptions,\n                nativeResolverAlias\n              ),\n            },\n            prefixer,\n            keepComments,\n            preprocessor,\n            root: process.cwd(),\n          },\n          cache,\n          eventEmitter: emitter,\n        };\n\n        const result = await transform(transformServices, code, asyncResolve);\n        const resolveDir = dirname(args.path);\n\n        if (typeof result.cssText === 'undefined') {\n          return {\n            contents: code,\n            loader,\n            resolveDir,\n          };\n        }\n\n        if (result.cssText === '') {\n          let contents = result.code;\n\n          if (sourceMap && result.sourceMap) {\n            const wywMap = Buffer.from(\n              JSON.stringify(result.sourceMap)\n            ).toString('base64');\n            contents += `/*# sourceMappingURL=data:application/json;base64,${wywMap}*/`;\n          }\n\n          return {\n            contents,\n            loader,\n            resolveDir,\n          };\n        }\n\n        let { cssText } = result;\n\n        const slug = slugify(cssText);\n        const cssFilename = `${filename}_${slug}.wyw.css`;\n\n        let contents = `import ${JSON.stringify(cssFilename)}; ${result.code}`;\n\n        if (sourceMap && result.cssSourceMapText) {\n          const map = Buffer.from(result.cssSourceMapText).toString('base64');\n          cssText += `/*# sourceMappingURL=data:application/json;base64,${map}*/`;\n          const wywMap = Buffer.from(JSON.stringify(result.sourceMap)).toString(\n            'base64'\n          );\n          contents += `/*# sourceMappingURL=data:application/json;base64,${wywMap}*/`;\n        }\n\n        cssLookup.set(cssFilename, cssText);\n        cssResolveDirs.set(cssFilename, resolveDir);\n\n        return {\n          contents,\n          loader,\n          resolveDir,\n        };\n      });\n    },\n  };\n}\n"],"file":"index.mjs"}