load.ts•1.23 kB
/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import fs from 'node:fs';
import path from 'node:path';
import zlib from 'node:zlib';
/**
* Reads a gzipped JSON file, decompresses it, parses the JSON,
* and returns a Uint8Array buffer of the parsed data.
* @param filePath The path to the .json.gz file.
* @returns A Uint8Array containing the stringified JSON data.
*/
export function loadTraceAsBuffer(filePath: string): Uint8Array {
try {
const compressedData = fs.readFileSync(
path.join(
import.meta.dirname,
// Get back up to the root directory as fixtures aren't moved ito the build/ dir.
'..',
'..',
'..',
'..',
'tests',
'trace-processing',
'fixtures',
filePath,
),
);
const decompressedData = zlib.gunzipSync(compressedData);
const jsonString = decompressedData.toString('utf-8');
const jsonObject = JSON.parse(jsonString);
const finalBuffer = Buffer.from(JSON.stringify(jsonObject));
const uint8Array = new Uint8Array(finalBuffer);
return uint8Array;
} catch (error) {
console.error('Error parsing the file:', error);
throw error;
}
}