[Feat] Memoize getDefinition parser function
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bcherny
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Jan 8, 2021
G-Rath
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Published v10.1.2 |
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I've been working on schemas for Github webhook events with the goal of generating types from the schemas - we recently merged the initial schemas, and so I've gotten to the point of actually generating the types from the
schema.jsongenerated by runningnpm run build:schemaon this pr.The
schema.jsonis quite large - just shy of 30000 lines, and currently it takes ~120 seconds to build the.d.tsfile.While I know this is to be expected when running large schemas, I did some basic poking around and found that the bulk of the bottleneck is in the
getDefinitionsparser method.That method had a jsdoc block with the comment "TODO: Memoize" so on a whim I decided to see how fast it'd be if I did just that.
Turns out it'll be 96.4% times faster, taking the time from ~120 seconds down to ~3 seconds while still generating an identical schema.