const regex = /(?<key>\w+)=
(?<value>
[^"\s]+(?!\S)
|
\\"(?:[^\\"]|\\{3}")*\\"
)/gm;
// Alternative syntax using RegExp constructor
// const regex = new RegExp('(?<key>\\w+)=
(?<value>
[^"\\s]+(?!\\S)
|
\\\\"(?:[^\\\\"]|\\\\{3}")*\\\\"
)', 'gm')
const str = `level=info ts=2023-10-20T14:30:48.716410806Z caller=metrics.go:159 component=frontend org_id=fake traceID=58290ebda8d79180 latency=fast query=\\"sum by (level) (count_over_time({k8s_namespace=\\\\\\"ingress-nginx\\\\\\"} |= \`\`[1s]))\\" query_hash=110010092 query_type=metric range_type=range length=15m0.001s start_delta=15m0.833402507s end_delta=832.40267ms step=1s duration=61.999532ms status=200 limit=1000 returned_lines=0 throughput=4.2MB total_bytes=260kB total_bytes_structured_metadata=0B lines_per_second=4209 total_lines=261 post_filter_lines=261 total_entries=1 store_chunks_download_time=0s queue_time=819.962996ms splits=2 shards=32 cache_chunk_req=0 cache_chunk_hit=0 cache_chunk_bytes_stored=0 cache_chunk_bytes_fetched=0 cache_chunk_download_time=0s cache_index_req=0 cache_index_hit=0 cache_index_download_time=0s cache_stats_results_req=0 cache_stats_results_hit=0 cache_stats_results_download_time=0s cache_result_req=0 cache_result_hit=0 cache_result_download_time=0s source=logvolhist`;
// Reset `lastIndex` if this regex is defined globally
// regex.lastIndex = 0;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for JavaScript, please visit: https://developer.mozilla.org/en/docs/Web/JavaScript/Guide/Regular_Expressions