{
  "version": 3,
  "sources": ["decode.web.js"],
  "sourcesContent": ["// Copyright 2026 will Farrell, and datastream contributors.\n// SPDX-License-Identifier: MIT\n/* global TextDecoderStream */\n\nexport const charsetDecodeStream = ({ charset } = {}, _streamOptions = {}) => {\n\t// Default/null charset means UTF-8, matching the node implementation which\n\t// falls back to UTF-8 for unknown/missing encodings instead of crashing.\n\t// `new TextDecoderStream(undefined)` already defaults to UTF-8, so normalise\n\t// null to undefined.\n\tif (charset === null || charset === undefined) {\n\t\treturn new TextDecoderStream();\n\t}\n\t// Let TextDecoderStream validate the label rather than maintaining a manual\n\t// allowlist that is stricter than the platform (it rejected valid labels such\n\t// as ISO-8859-1 / ISO-8859-9 that TextDecoder accepts). The constructor\n\t// throws a RangeError for genuinely unknown labels; rethrow with the\n\t// package-branded message.\n\ttry {\n\t\treturn new TextDecoderStream(charset);\n\t} catch {\n\t\tthrow new Error(\n\t\t\t`charsetDecodeStream: Unsupported web encoding \"${charset}\"`,\n\t\t);\n\t}\n};\n\nexport default charsetDecodeStream;\n"],
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