Heizenbug debug...

extract-variable-names.js

var esprima = require("esprima")
var code = `
    var foldParams;
    var i;
    var isMultipage = !page.isFrontCover() && !page.isBackCover();
    var pageNumbers = page.getNumbers();
    var pagesData = [];
    var processIsReady;
    var proofParams = __WEBPACK_IMPORTED_MODULE_13_lodash_extend___default()({}, proofParameters);
    var snapshotsAreReady = __WEBPACK_IMPORTED_MODULE_21_jquery___default.a.Deferred();

    processIsReady = displayProcess(artboard, face, process, {
        isRenderProof: true
    });

    if (renderParams.hideEmptyText) {
        artboard.canvasView.hideEmptyText();
    }

    if (renderParams.transparentBackground) {
        proofParams.format = 'png';
        delete artboard.canvasView.canvas.backgroundColor;
        artboard.canvasView.hideBackgrounds({
            type: 'colored'
        });
    }

    artboard.canvasView.showInvisibleOnArtboardObjects();
    artboard.canvasView.hideInvisibleObjects();
    artboard.canvasView.hideInvisibleOnSnapshotObjects();

    if (page.hasFold() && splitFolds) {
        try {
            foldParams = __WEBPACK_IMPORTED_MODULE_35__splitPageHelper__["a" /* default */].splitPage(page.getDesignSize({
                includeBleedMargin: true
            }), page.get('fold'));
        } catch (e) {
            snapshotsAreReady.reject(e);
        }

        if (isMultipage) {

            pagesData.push({
                proofParams: __WEBPACK_IMPORTED_MODULE_13_lodash_extend___default()(__WEBPACK_IMPORTED_MODULE_8_lodash_clone___default()(proofParams), foldParams[0]),
                pageNumber: pageNumbers.left
            });


            pagesData.push({
                proofParams: __WEBPACK_IMPORTED_MODULE_13_lodash_extend___default()(__WEBPACK_IMPORTED_MODULE_8_lodash_clone___default()(proofParams), foldParams[1]),
                pageNumber: pageNumbers.right
            });
        } else {
            for (i = 0; i < foldParams.length; i++) {
                pagesData.push({
                    proofParams: __WEBPACK_IMPORTED_MODULE_13_lodash_extend___default()(__WEBPACK_IMPORTED_MODULE_8_lodash_clone___default()(proofParams), foldParams[i]),
                    pageNumber: 1
                });
            }
        }
    } else {
        pageNumbers = __WEBPACK_IMPORTED_MODULE_7_lodash_isArray___default()(pageNumbers) ? pageNumbers : __WEBPACK_IMPORTED_MODULE_6_lodash_compact___default()(__WEBPACK_IMPORTED_MODULE_5_lodash_values___default()(pageNumbers));
        pagesData.push({
            proofParams: proofParams,
            pageNumber: pageNumbers[0]
        });
    }

    processIsReady.then(function () {
        var snapshotsData = [];

        __WEBPACK_IMPORTED_MODULE_16_lodash_each___default()(pagesData, function (pageData) {
            var height = pageData.proofParams.height || artboard.canvasView.canvas.getHeight();
            var snapshotData = {};
            var width = pageData.proofParams.width || artboard.canvasView.canvas.getWidth();

            if (!process.isFullCoating()) {
//                snapshotData.image = artboard.canvasView.generateImage(pageData.proofParams).replace(/^data:image\/(png|jpeg|jpg);base64\,/, '');
            }

            snapshotData.type = process.get('type');
            snapshotData.width = Math.round(width * (pageData.proofParams.scaleX || 1));
            snapshotData.height = Math.round(height * (pageData.proofParams.scaleY || 1));
            snapshotData.pageNumber = pageData.pageNumber;

            snapshotsData.push(snapshotData);
        });

        artboard.canvasView.showInvisibleOnSnapshotObjects();

        artboard.canvasView.canvas.backgroundColor = artboard.canvasView.defaultBackgroundColor;
        artboard.canvasView.showBackgrounds();

        snapshotsAreReady.resolve(snapshotsData);
    });

   `;
var uniq = arr => [...new Set(arr)];
var tokens = esprima.tokenize(code).filter(({type}) => type === 'Identifier');
var vars = tokens.map(t => t.value)
vars = uniq(vars)
console.log(vars)

TODO.md

todo: create tool which could get diffs of stack traces and vars values to have easier debugging experience Especially, when you compare similar cases and one of them NOT WORKING!

1. remove fucking "use strict";

 sed -i -e 's|use strict|LoL|g' dist/davinciDesigner*.js

2. for each function from call stack execute

arguments.callee.toString() // to reveal source code

3. extract variable names ("Identifier") from source code somehow (https://www.npmjs.com/package/esprima) see also extract-variable-names.js

4. eval('//code to save variable values from the function...')

5. display result somehow...