#Builder

#Methods

#prepare

prepare(): Promise<void>

Asynchronously executes dynamic filter code. Call before build() to execute code defined in dynamicFilter. This is an idempotent method — multiple calls will not re-execute.

#build

build<T = S>(): T

Generates the final chart configuration (Spec). This is the most commonly used core method. If the configuration includes a dynamicFilter code, call prepare() first.

#buildSpec

buildSpec<T = S>(advanced: AdvancedVSeed): T

Converts the intermediate-layer configuration (AdvancedVSeed) to the final Spec. Use only when you need deep customization of the intermediate-layer configuration.

#buildAdvanced

buildAdvanced(): AdvancedVSeed | null

Generates the intermediate-layer configuration (AdvancedVSeed), i.e., the chart template. More detailed than the raw VSeed, exposing more chart internals.

#getColorItems

getColorItems(): __type[]

Gets field information related to colors in the data. Commonly used to generate chart legends or color filter UIs.

#getColorIdMap

getColorIdMap(): Record

Gets a detailed mapping table for color fields. Key is the color ID, Value is the detailed information.

#getColorValueMap

getColorValueMap(): undefined | Record

Gets the mapping from colorId to the final color value in a discrete color map.

#Static Methods

#getAdvancedPipeline

static getAdvancedPipeline(chartType: ChartType): Pipe[]

[Internal] Gets the template build pipeline for the specified chart type, used for debugging the VSeed → AdvancedVSeed conversion process.

#getSpecPipeline

static getSpecPipeline(chartType: ChartType): SpecPipe[]

[Internal] Gets the Spec build pipeline for the specified chart type, used for debugging the AdvancedVSeed → Spec conversion process.

#getTheme

static getTheme(themeKey?: string): CustomThemeConfig

Gets the configuration of the specified theme. If themeKey is not provided, returns the 'light' theme by default.

#getThemeMap

static getThemeMap(): Record<string, CustomThemeConfig>

Gets all registered theme configurations.

#from

static from<T extends Spec = Spec>(vseed: VSeed): Builder<T>

Static factory method for conveniently creating a Builder instance.

#registerAdvancedPipeline

static registerAdvancedPipeline(chartType: ChartType, pipeline: AdvancedPipeline): void

[Extension] Registers a template build pipeline for a new chart type.

#registerSpecPipeline

static registerSpecPipeline(chartType: ChartType, pipeline: SpecPipeline): void

[Extension] Registers a Spec build pipeline for a new chart type.

#updateAdvanced

static updateAdvanced(chartType: ChartType, pipe: AdvancedPipe): void

[Extension] Modifies the template build logic for an existing chart, inserting a custom Pipe to influence the generated AdvancedVSeed.

#updateSpec

static updateSpec(chartType: ChartType, pipe: SpecPipe): void

[Extension] Modifies the Spec build logic for an existing chart, inserting a custom Pipe to influence the final generated Spec.

#registerTheme

static registerTheme(key: string, theme: CustomThemeConfig): void

[Extension] Registers a custom theme.

#Properties

#get locale

get locale()

Gets the locale currently used by the Builder.

#get vseed

get vseed()

Gets the current VSeed input data.

#set vseed

set vseed(value)

Updates the VSeed input data. After updating, the cached state from prepare() will be cleared.

#get isPrepared

get isPrepared()

Gets the prepare() state.

#set isPrepared

set isPrepared(value: boolean)

Sets the prepare() state.

#get advancedVSeed

get advancedVSeed()

Gets the current AdvancedVSeed intermediate configuration object.

#set advancedVSeed

set advancedVSeed(value)

Sets the AdvancedVSeed intermediate configuration object. Typically used for caching or reusing an existing intermediate configuration.

#get spec

get spec()

Gets the currently generated final Spec object.

#set spec

set spec(value)

Sets the Spec object. Typically used for caching.

#get performance

get performance()

Gets performance statistics from the build process, including the duration of each phase (in ms).

#set performance

set performance(value)

Sets the performance statistics.