symbolicate tombstone threads using ndk-stack

index.js

const fs = require('fs/promises');
const process = require('process');
const { exec } = require('child_process');

const [SYMBOLS_DIR, TOMBSTONE_FILE_NAME] = process.argv.slice(2);
const FILE_OPTIONS = { encoding: 'utf-8' };
const TOMBSTONE_THREAD_DELIMITER = '--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n';
const NDK_STACK_DELIMITER = '*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n';

function run(command) {
    return new Promise((resolve, reject) => {
        exec(command, (error, stdout) => {
            if (error) {
                reject(error);
                return;
            }

            resolve(stdout);
        })
    })
}

async function resolveNdkStack() {
    try {
        return await run(`which ndk-stack`);
    } catch (e) {
        return (await run(`find ~/Library/Android -type f -name ndk-stack | head -n1`)).trim();
    }
}

void async function () { // MAIN
    const ndkStackCommand = await resolveNdkStack();
    const tombstone = await fs.readFile(TOMBSTONE_FILE_NAME, FILE_OPTIONS);
    const threads = tombstone.split(TOMBSTONE_THREAD_DELIMITER).slice(1); // first index is the main stacktrace and memory table

    for (const thread of threads) {
        const threadInfo = Object.fromEntries(
            thread
                .slice(0, thread.indexOf('>>>'))
                .trim()
                .split(', ')
                .map(e => e.split(': '))
        );

        const filename = `name-${threadInfo.name}_pid-${threadInfo.pid}_tid-${threadInfo.tid}`;

        await fs.writeFile(`${filename}.log`, NDK_STACK_DELIMITER + thread, FILE_OPTIONS);
        await run(`${ndkStackCommand} --sym ${SYMBOLS_DIR} --dump ${filename.replace(' ', '\\ ')}.log > ${filename.replace(' ', '\\ ')}.symbolized.log`);
    }
}() // END MAIN