Package APIs
@master/css-runtime
Browser runtime for Master CSS
Public entrypoints
Observe classes in a document or shadow root and maintain their generated CSS. Runtime startup requires a compiled manifest and returns an owned session.
Declarations show the public surface of each import path. Referenced type names may be local to the package; import only names listed as exports here. Private implementation is omitted, while constructor restrictions remain visible.
@master/css-runtime
Runtime startup, observation, snapshots and custom-element integration.
Exports · 11
MasterCSSRuntime
export declare class MasterCSSRuntime extends RuntimeHost implements Disposable { private constructor(); get binding(): MasterCSSEngine['binding']; static start(options: MasterCSSRuntimeStartOptions): Promise<MasterCSSRuntime>; ensureClassRules(classNames: readonly string[]): MasterCSSEngineTransition; deleteClassRules(classNames: readonly string[]): MasterCSSEngineTransition; observe(): this; disconnect(): this; refresh(manifest?: MasterCSSManifest): this; snapshot(): MasterCSSRuntimeSnapshot; dispose(): void; [Symbol.dispose](): void;}MasterCSSRuntimeBinding
export type MasterCSSRuntimeBinding = 'auto' | 'native' | 'wasm';MasterCSSRuntimeClassSnapshot
export interface MasterCSSRuntimeClassSnapshot { readonly usageCount: number; readonly retained: boolean; readonly rules: readonly MasterCSSRuntimeRuleSnapshot[];}MasterCSSRuntimeFacade
export interface MasterCSSRuntimeFacade extends Disposable { readonly binding: MasterCSSEngine['binding']; observe(): this; disconnect(): this; refresh(manifest?: MasterCSSManifest): this; ensureClassRules(classNames: readonly string[]): MasterCSSEngineTransition; deleteClassRules(classNames: readonly string[]): MasterCSSEngineTransition; snapshot(): MasterCSSRuntimeSnapshot; dispose(): void;}MasterCSSRuntimeLayerSnapshot
export interface MasterCSSRuntimeLayerSnapshot { readonly name: typeof LAYER_ORDER[number] | 'keyframes'; readonly cssText: string; readonly ruleCount: number;}MasterCSSRuntimeOptions
export interface MasterCSSRuntimeOptions { readonly manifest: MasterCSSManifest; readonly root?: Document | ShadowRoot; readonly emittedGlobals?: MasterCSSEmittedGlobals; readonly hydrationManifest?: MasterCSSHydrationManifest;}MasterCSSRuntimeRuleSnapshot
export interface MasterCSSRuntimeRuleSnapshot { readonly key: string; readonly layer: MasterCSSManifestUtilityLayerName; readonly text: string;}MasterCSSRuntimeSnapshot
export interface MasterCSSRuntimeSnapshot { readonly binding: MasterCSSEngine['binding']; readonly cssText: string; readonly observing: boolean; readonly classRules: Readonly<Record<string, MasterCSSRuntimeClassSnapshot>>; readonly usageCounts: Readonly<Record<string, number>>; readonly layers: readonly MasterCSSRuntimeLayerSnapshot[]; readonly hydration: { readonly state: 'none' | 'runtime' | 'progressive'; readonly manifestLoaded: boolean; readonly failureReason?: string; };}MasterCSSRuntimeStartOptions
export interface MasterCSSRuntimeStartOptions extends MasterCSSRuntimeOptions { readonly binding?: MasterCSSRuntimeBinding; readonly startupTimeoutMs?: number; readonly onDiagnostic?: (diagnostic: MasterCSSDiagnostic) => void;}withMasterCSSRuntime
export declare function withMasterCSSRuntime( options: WithMasterCSSRuntimeOptions): <T extends MasterCSSRuntimeHostConstructor>(target: T) => T;WithMasterCSSRuntimeOptions
export interface WithMasterCSSRuntimeOptions { readonly manifest: MasterCSSRuntimeManifest; readonly root?: MasterCSSRuntimeRoot; readonly emittedGlobals?: MasterCSSRuntimeEmittedGlobals; readonly hydrationManifest?: MasterCSSRuntimeHydrationManifest;}Using this contract
Await MasterCSSRuntime.start() before using the session, and call dispose() when its owner is finished. withMasterCSSRuntime() integrates startup and disposal with custom-element connection callbacks and requires a shadow root. See Rendering Modes for the browser workflow.