19aa12106c
This adds default exclusion filters for `**/*.min.js` and `**/*-min.js` to the JavaScript auto-builder, meaning that files matching these patterns will no longer be extracted, unless they are re-included in the `.lgtm.yml` file. Alerts in minified code aren't shown by default anyway, so we can save ourselves some work by not analyzing them in the first place. While including minified files in the snapshot can in theory improve analysis results in non-minified files, this is likely to be rare in practice.
JavaScript extractor
This directory contains the source code of the JavaScript extractor. The extractor depends on various libraries that are not currently bundled with the source code, so at present it cannot be built in isolation.
The extractor consists of a parser for the latest version of ECMAScript, including a few proposed and historic extensions (see src/com/semmle/jcorn), classes for representing JavaScript and TypeScript ASTs (src/com/semmle/js/ast and src/com/semmle/ts/ast), and various other bits of functionality. Historically, the main entry point of the JavaScript extractor has been com.semmle.js.extractor.Main. However, this class is slowly being phased out in favour of com.semmle.js.extractor.AutoBuild, which is the entry point used by LGTM.
License
Like the LGTM queries, the JavaScript extractor is licensed under Apache License 2.0 by Semmle.