async-lock

Lock on asynchronous code

v1.4.1 URL: https://unpkg.com/async-lock@1.4.1/index.js

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lock async concurrency critical section mutex

critical

Extract & Inline Critical-path CSS from HTML

v7.2.1 URL: https://unpkg.com/critical@7.2.1/index.js

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critical path css optimization

superlock

The most simple mutex/semaphore implementation

v1.2.2 URL: https://unpkg.com/superlock@1.2.2/src/index.js

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async await concurrency critical lock mutex section semaphore

crittr

Crittr is a high performance critical css extraction library with a multiple url support.

v2.0.2 URL: https://unpkg.com/crittr@2.0.2/index.js

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critical css above the fold atf stylesheets extraction critical css performance penthouse extract

rollup-plugin-critical

Rollup plugin to generate critical CSS.

v1.0.14 URL: https://unpkg.com/rollup-plugin-critical@1.0.14/dist/index.cjs

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rollup plugin critical css