export declare namespace Env {
    type WasmPrefixOrFilePaths = string | {
        'ort-wasm.wasm'?: string;
        'ort-wasm-threaded.wasm'?: string;
        'ort-wasm-simd.wasm'?: string;
        'ort-wasm-simd-threaded.wasm'?: string;
    };
    interface WebAssemblyFlags {
        /**
         * set or get number of thread(s). If omitted or set to 0, number of thread(s) will be determined by system. If set
         * to 1, no worker thread will be spawned.
         *
         * This setting is available only when WebAssembly multithread feature is available in current context.
         *
         * @defaultValue `0`
         */
        numThreads?: number;
        /**
         * set or get a boolean value indicating whether to enable SIMD. If set to false, SIMD will be forcely disabled.
         *
         * This setting is available only when WebAssembly SIMD feature is available in current context.
         *
         * @defaultValue `true`
         */
        simd?: boolean;
        /**
         * Set or get a number specifying the timeout for initialization of WebAssembly backend, in milliseconds. A zero
         * value indicates no timeout is set.
         *
         * @defaultValue `0`
         */
        initTimeout?: number;
        /**
         * Set a custom URL prefix to the .wasm files or a set of overrides for each .wasm file. The override path should be
         * an absolute path.
         */
        wasmPaths?: WasmPrefixOrFilePaths;
        /**
         * Set or get a boolean value indicating whether to proxy the execution of main thread to a worker thread.
         *
         * @defaultValue `false`
         */
        proxy?: boolean;
    }
    interface WebGLFlags {
        /**
         * Set or get the WebGL Context ID (webgl or webgl2).
         *
         * @defaultValue `'webgl2'`
         */
        contextId?: 'webgl' | 'webgl2';
        /**
         * Set or get the maximum batch size for matmul. 0 means to disable batching.
         *
         * @deprecated
         */
        matmulMaxBatchSize?: number;
        /**
         * Set or get the texture cache mode.
         *
         * @defaultValue `'full'`
         */
        textureCacheMode?: 'initializerOnly' | 'full';
        /**
         * Set or get the packed texture mode
         *
         * @defaultValue `false`
         */
        pack?: boolean;
        /**
         * Set or get whether enable async download.
         *
         * @defaultValue `false`
         */
        async?: boolean;
    }
}
export interface Env {
    /**
     * set the severity level for logging.
     *
     * @defaultValue `'warning'`
     */
    logLevel?: 'verbose' | 'info' | 'warning' | 'error' | 'fatal';
    /**
     * Indicate whether run in debug mode.
     *
     * @defaultValue `false`
     */
    debug?: boolean;
    /**
     * Represent a set of flags for WebAssembly
     */
    wasm: Env.WebAssemblyFlags;
    /**
     * Represent a set of flags for WebGL
     */
    webgl: Env.WebGLFlags;
    [name: string]: unknown;
}
/**
 * Represent a set of flags as a global singleton.
 */
export declare const env: Env;