ianmackenzie/elm-units

Investigate options for function inlining

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#25 opened on Jan 9, 2019

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Description

Although the Elm compiler now compiles the representation of a Quantity down to a plain Int or Float when --optimize is used, there is still a performance overhead of using Quantity values since things like addition have to go through a function call (Quantity.plus) instead of just being the + operator in the generated JavaScript. It would be useful to review different JS optimizers to see if there is one that can reliably inline these kinds of functions to eliminate the function call overhead. Candidates include:

Contributor guide

Research direction
Evaluate the listed JavaScript optimizers (Google Closure Compiler, UglifyJS, Prepack) for their ability to inline functions from elm units. Set up a test project with elm units, compile with optimize, and run each optimizer on the output. Measure performance improvements and reliability of inlining.
Tech stack
javascript
Domain
performance
Issue type
Research
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40