import { Definition, UnknownSpec } from './definitions';
import { Display } from './display';
import { Metadata, ProjectMetadata } from './resource';
export type VariableName = string;
export type VariableValue = string | string[] | null;
export interface VariableDisplay extends Display {
    hidden?: boolean;
}
export interface VariableSpec {
    name: VariableName;
    display?: VariableDisplay;
}
export interface TextVariableDefinition extends Definition<TextVariableSpec> {
    kind: 'TextVariable';
}
export interface TextVariableSpec extends VariableSpec {
    value: string;
    constant?: boolean;
}
export interface ListVariableDefinition extends Definition<ListVariableSpec> {
    kind: 'ListVariable';
}
export interface ListVariableSpec<PluginSpec = UnknownSpec> extends VariableSpec {
    defaultValue?: VariableValue;
    allowMultiple: boolean;
    allowAllValue: boolean;
    customAllValue?: string;
    capturingRegexp?: string;
    sort?: string;
    plugin: Definition<PluginSpec>;
}
export interface BuiltinVariableDefinition extends Definition<BuiltinVariableSpec> {
    kind: 'BuiltinVariable';
}
export interface BuiltinVariableSpec extends VariableSpec {
    value: () => string;
    source: string;
}
export type VariableDefinition = TextVariableDefinition | ListVariableDefinition;
/**
 * A variable that belongs to a project.
 */
export interface VariableResource {
    kind: 'Variable';
    metadata: ProjectMetadata;
    spec: VariableDefinition;
}
/**
 * A global variable that doesn´t belong to a project.
 */
export interface GlobalVariableResource {
    kind: 'GlobalVariable';
    metadata: Metadata;
    spec: VariableDefinition;
}
export type Variable = VariableResource | GlobalVariableResource;
export declare function getVariableProject(variable: Variable): string | undefined;
export declare const DEFAULT_ALL_VALUE: "$__all";
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