import { type Observable } from 'rxjs';
import type { LogLevel, MikroEnv, MikroJSConfig, Minifier, MinifyLevel } from '../../_exports/index.js';
export type BuildEvent = {
    type: 'phase';
    phase: string;
} | {
    type: 'file';
    path: string;
    size: number;
} | {
    type: 'done';
};
export declare function trace(entries: string[]): Promise<{
    fileList: string[];
    warnings: Error[];
    sourcePathMap: Map<string, string>;
}>;
export declare function loadConfig(entry: string, env?: MikroEnv): Promise<MikroJSConfig | null>;
export declare function build(entry: string, buildDir: string, options: {
    minify: boolean;
    bytecode: boolean;
    minifier?: Minifier;
    minifyLevel?: MinifyLevel;
    logLevel?: LogLevel;
    rootDir?: string;
    bundle?: boolean;
    /** Config environment to resolve from mikro.config.ts ('development' or
     * 'production'). Defaults to 'production'. */
    env?: MikroEnv;
}): Observable<BuildEvent>;
/**
 * Build multiple test files into one unbundled deploy tree. Writes a
 * synthesized package.json carrying a `tests` array that the firmware
 * supervisor uses as its sole "test mode" signal. Each path runs in
 * its own fresh runtime through one transport session.
 *
 * Always unbundled (bundling would defeat per-file isolation and
 * inflates deploy size via duplicated shared deps). No `main` field:
 * the supervisor drives iteration from `tests`, and leaving `main` out
 * makes the intent obvious to anyone reading the deployed bundle.
 */
export declare function buildTests(entries: string[], buildDir: string, options: {
    minify: boolean;
    bytecode: boolean;
    minifier?: Minifier;
    minifyLevel?: MinifyLevel;
    logLevel?: LogLevel;
    rootDir: string;
    /** Config environment to resolve from mikro.config.ts. Tests always build
     * in 'development'. */
    env?: MikroEnv;
}): Observable<BuildEvent>;
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