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But to preserve backwards compat with older Generator, we'll fall\n  // back to the encoded map.\n  let { code: outputCode, decodedMap: outputMap = result.map } = result;\n\n  // For backwards compat.\n  if (result.__mergedMap) {\n    /**\n     * @see mergeSourceMap\n     */\n    outputMap = { ...result.map };\n  } else {\n    if (outputMap) {\n      if (inputMap) {\n        // mergeSourceMap returns an encoded map\n        outputMap = mergeSourceMap(\n          inputMap.toObject(),\n          outputMap,\n          generatorOpts.sourceFileName,\n        );\n      } else {\n        // We cannot output a decoded map, so retrieve the encoded form. 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