export declare namespace FileFormat {
    export type Profile = EventedProfile | SampledProfile;
    export interface File {
        $schema: 'https://www.speedscope.app/file-format-schema.json';
        shared: {
            frames: Frame[];
        };
        profiles: Profile[];
        name?: string;
        activeProfileIndex?: number;
        exporter?: string;
    }
    export interface Frame {
        name: string;
        file?: string;
        line?: number;
        col?: number;
    }
    export enum ProfileType {
        EVENTED = "evented",
        SAMPLED = "sampled"
    }
    export interface IProfile {
        type: ProfileType;
    }
    export interface EventedProfile extends IProfile {
        type: ProfileType.EVENTED;
        name: string;
        unit: ValueUnit;
        startValue: number;
        endValue: number;
        events: (OpenFrameEvent | CloseFrameEvent)[];
    }
    type SampledStack = number[];
    export interface SampledProfile extends IProfile {
        type: ProfileType.SAMPLED;
        name: string;
        unit: ValueUnit;
        startValue: number;
        endValue: number;
        samples: SampledStack[];
        weights: number[];
    }
    export type ValueUnit = 'none' | 'nanoseconds' | 'microseconds' | 'milliseconds' | 'seconds' | 'bytes';
    export enum EventType {
        OPEN_FRAME = "O",
        CLOSE_FRAME = "C"
    }
    export interface IEvent {
        type: EventType;
        at: number;
    }
    interface OpenFrameEvent extends IEvent {
        type: EventType.OPEN_FRAME;
        frame: number;
    }
    interface CloseFrameEvent extends IEvent {
        type: EventType.CLOSE_FRAME;
        frame: number;
    }
    export {};
}