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feat(loader-utils): Export is-type helpers (#3258)

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/modules/parquet/src/polyfills/buffer/buffer-polyfill.node.ts
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// loaders.gl
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// SPDX-License-Identifier: MIT
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// Copyright vis.gl contributors
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import {Buffer as BufferPolyfill} from './buffer';





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/** Install the Node.js Buffer polyfill (NO-OP in Node.js) */




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export function installBufferPolyfill(): typeof Buffer {




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  const Buffer_ = typeof Buffer !== 'undefined' ? Buffer : null;




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  if (!Buffer_) {




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    // @ts-expect-error




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    globalThis.Buffer = BufferPolyfill;




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    return BufferPolyfill as unknown as typeof Buffer;




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  }




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  globalThis.process = globalThis.process || {};




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  // Buffer is a global variable in Node.js




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  return Buffer_;




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}




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