@ghostery/url-parser
v1.1.6
Published
A Fast URL parser implementation
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13
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Ghostery Url Parser
A Fast implementation of url parsing, mostly API-compatible with the standard URL class while being on average 2-3 times faster. Evaluation of URL components is lazy, so this implementation should be fast for all read use-cases.
Known differences to standard URL:
- Parameters returned via
URL.searchParams.entries()
are decoded only withdecodeURIComponent
. This differs to standards parsing in some subtle ways. - You can iterate a URL parameters array directly via
URL.searchParams.params
. This is around 20% faster than using an iterator. - Parameter strings (
;
sepearated key/value pairs) are parsed, and accessible viaURL.parameters
. - Domain parsing with tldts is built in. The
URL.domainInfo
attribute returns output from tldts'parseHost
method. - Hostname validation is not done on initial parse. The
isValidHost()
method is provided for this purpose. - All URLs with a valid authority are given an
origin
, regardless of the protocol scheme. This differs from the standard that only does so for a set of known schemes.
Install
npm install @ghostery/url-parser
Usage
const parsed = new URL('https://www.example.com');
parsed.hostname // == 'www.example.com'
Performance
We benchmark against a list of 250,000 URLs collected from popular sites, as previously used in our adblocker benchmark. We compare two use-cases:
URL
object creation:new URL(url)
- Query string parsing:
new URL(url).searchParams.entries()
We compare to a reference implementation on each platform:
- Node:
URL
class from theurl
library - Firefox:
window.URL
- Chrome:
window.URL
- Safari:
window.URL
| Environment | Use case | Reference: urls/s | Ghostery parser: urls/s | Speedup |
| --- | --- | --: | --: | --- |
| Node 11 | new URL()
| 149,514
| 1,577,711
| 10.5x faster
| Node 11 | searchParams
| 140,544
| 198,340
| 1.4x faster
| Firefox 69 | new URL()
| 268,066
| 1,043,877
| 3.9x faster
| Firefox 69 | searchParams
| 119,207
| 354,793
| 3.0x faster
| Chrome 75 | new URL()
| 366,294
| 1,721,903
| 4.7x faster
| Chrome 75 | searchParams
| 144,309
| 283,956
| 2.0x faster
| Safari 12 | new URL()
| 656,930
| 1,525,078
| 2.3x faster
| Safari 12 | searchParams
| 264,481
| 437,738
| 1.7x faster
All benchmarks were run on a Mid 2015 Macbook Pro, 2.5 GHz Intel Core i7, 16GB.