BEMHTML: performance optimization in BEMHTML.prototype.renderMix

bem / bem-xjst

bem-xjst (eXtensible JavaScript Templates): declarative template engine for the browser and server

https://bem.github.io/bem-xjst

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BEMHTML: performance optimization in BEMHTML.prototype.renderMix #541

Closed victor-homyakov closed 5 years ago

victor-homyakov commented 5 years ago

Fixes #

Changes proposed in this pull request

use Set to track visited class names
use minimalistic polyfill where Set is not available

Checklist

[ ] Documentation changed
[ ] Tests added
[ ] Benchmark checked

Benchmark result

coveralls commented 5 years ago

Coverage increased (+0.1%) to 64.496% when pulling f2d7eabad94d9dbd2860a8a4f861986450865dd4 on victor-homyakov:renderMix-performance-7.x into 0366c43fd6ebee709d8734b365e2b128af99026b on bem:v7.x.