Measure your fallback font against your webfont on real pages, per weight band, and get the size-adjust that stops text re-wrapping (CLS) when the font loads.
What is the DebugSwiftHQ/fallback-font-check GitHub project? Description: "Measure your fallback font against your webfont on real pages, per weight band, and get the size-adjust that stops text re-wrapping (CLS) when the font loads.". Written in JavaScript. Explain what it does, its main use cases, key features, and who would benefit from using it.
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