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import { AsyncOptions, Java, JavaError } from "./java";

import findRoot from "find-root";

const root = findRoot(__dirname);

let java: Promise<Java> | undefined;

export interface GetJavaOptions {

beforeInit?: (java: Java) => void | Promise<void>;

}

export async function getJava(asyncOptions?: AsyncOptions | null, options?: GetJavaOptions): Promise<Java> {

if (java) {

return java;

}

java = _getJava(asyncOptions, options);

return java;

}

async function _getJava(asyncOptions?: AsyncOptions | null, options?: GetJavaOptions): Promise<Java> {

const java = (await import(root)).default as Java;

java.options.push("-Djava.awt.headless=true");

//java.options.push('-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=5005');

java.classpath.push("test/");

java.classpath.push("test/commons-lang3-3.18.0.jar");

if (asyncOptions !== null) {

java.asyncOptions = asyncOptions ?? {

syncSuffix: "Sync",

asyncSuffix: "",

promiseSuffix: "Promise",

};

}

await options?.beforeInit?.(java);

// force initialization

java.import("java.util.ArrayList");

return java;

}

export function expectJavaError(error: unknown): asserts error is JavaError {}