const FontContext: LiveContext<RustTextAPI>
( font: Partial<FontProps>, ) => number | null
( fonts: Partial<FontProps>[], ) => number[]
( fonts: Font[], ) => void
( fontId: number, size: number, ) => FontMetrics
measureSpans
(
fontStack: number[],
text: Uint16Array,
size: number,
) => SpanMetrics
( fontId: number, glyphId: number, size: number, ) => GlyphMetrics
( fontId: number, char: string, ) => number
packages / workbench / src / text / providers / font-provider.ts