V8 Zero-cost stack trace test/issue/question demo code

asyncStackTraceExampleCode

/* node.js v12.6.0, TypeScript - i.e. ES2018 + type annotations */

/*
===============================================
OLD VERSION (using fs.readFile)
===============================================

With this function I did NOT get a full async stacktrace. Example:

FileNotFoundError: File not found: c3ba0f23b58a5c645b7f3e803b1ba5af42d8d2f9262b029d2718a89709ba0b03 [objects]
    at /home/mha/Projects/replicant/node_modules/one.core/lib/system/storage-base.js:155:65
    at async readUTF8TextFile (node_modules/one.core/lib/system/storage-base.js:153:10)
*/
export function readUTF8TextFile(filename: string): Promise<string> {
    return new Promise((resolve, reject): void => {
        readFile(join(STORAGE_DIR[type], filename), 'utf8', (err, contents) => {
            if (err) {
                reject(err);
            } else {
                resolve(contents);
            }
        });
    });
}


/*
===============================================
NEW VERSION (using fs.promise.readFile)
===============================================

NOTE AND THAT IS THE MAIN QUESTION: I *must* use promise.cath(err => ...).
If I use try/catch it does not work.

With this function I get a full async stacktrace. Example:

FileNotFoundError: File not found: c3ba0f23b58a5c645b7f3e803b1ba5af42d8d2f9262b029d2718a89709ba0b03 [objects]
    at /home/mha/Projects/replicant/node_modules/one.core/lib/system/storage-base.js:155:65
    at async readUTF8TextFile (node_modules/one.core/lib/system/storage-base.js:153:10)
    at async calculateIdHash (node_modules/one.core/lib/microdata-to-id-hash.js:104:21)
    at async getIdHash (node_modules/one.core/lib/storage-id-hash-cache.js:33:18)
    at async /home/mha/Projects/replicant/node_modules/one.core/lib/storage-references-handler.js:31:20
    at async Promise.all (index 1)
    at async referenceObjectsHandler (node_modules/one.core/lib/storage-references-handler.js:40:3)
    at async Promise.all (index 0)
    at async storeVersionedObject (node_modules/one.core/lib/storage-versioned-objects.js:67:25)
    at async storeVersionedObject (node_modules/one.core/lib/plan-storage-api.js:52:12)
    at async Promise.all (index 0)
    at async Object.createObjects (node_modules/one.core/lib/identity.js:19:10)
    at async createNewPlanResult (node_modules/one.core/lib/plan.js:144:23)
    at async createObjectsWithPurePlan (node_modules/one.core/lib/plan.js:223:10)
    at async createSingleObjectThroughPurePlan (node_modules/one.core/lib/plan.js:250:22)
    at async Context.<anonymous> (test/jsapi-test.js:233:27)
*/
export async function readUTF8TextFile(filename: string): Promise<string> {
    return await readFile(join(STORAGE_DIR[type], filename), 'utf8').catch(err => {
        throw new Error(err);
    });
}


/*
A VARIANT OF THE NEW VERSION USING try/catch
which does not produce a stack trace

*/
export async function readUTF8TextFile(filename: string): Promise<string> {
    try {
        return await readFile(join(STORAGE_DIR[type], filename), 'utf8');
    } catch (err) {
        throw new Error(err);
    }
}