pvdz

const { performance } = require("perf_hooks")

let running = new Map()
let data = new Map()
let timeNames = new Set()

console.timeSum = function _timeSum(name, callback) {
  if (running.has(name)) {
    return console.warn("console.timeSum: name already being recorded:", name)
  }

pvdz

const path = require(`path`)
const v8 = require(`v8`)
const fs = require(`fs`)

const contentful = require(`contentful`)
const _ = require(`lodash`)
const chalk = require(`chalk`)
const normalize = require(`./normalize`)
const { formatPluginOptionsForCLI } = require(`./plugin-options`)

pvdz

 😶  11:04:20 (master) ~/gatsby/daneden.me $ gatsby build
success open and validate gatsby-configs - 0.154s
success load plugins - 0.603s
success onPreInit - 0.003s
success delete html and css files from previous builds - 0.011s
success initialize cache - 0.008s
success copy gatsby files - 0.021s
success onPreBootstrap - 0.016s
success createSchemaCustomization - 0.002s
warn code block or inline code language not specified in markdown. applying generic code block

pvdz

How do you mocha+babel test projectA as is? 
Note that projectB also its own mocha+babel tests which run fine (but they do not need to run here).

// ..../somedir/projectA/src/index.js
import {x} from '../../projectB/src/index.js';
...


// ..../somedir/projectB/src/index.js
import {x} from './tools.js';

pvdz

import Solver from '../../src/solver';
import {
  domain__debug,
  domain_arrToSmallest,
  domain_createValue,
  domain_divby,
  domain_intersection,
  domain_mul,
} from '../../src/domain';
import domain_plus from '../../src/doms/domain_plus';

pvdz

import Solver from '../../src/solver';
import {
  domain__debug,
  domain_arrToSmallest,
  domain_createValue,
  domain_divby,
  domain_intersection,
  domain_mul,
} from '../../src/domain';
import domain_plus from '../../src/doms/domain_plus';

pvdz

import Solver from '../../src/solver';
import {
  domain__debug,
  domain_arrToSmallest,
  domain_createValue,
  domain_divby,
  domain_intersection,
  domain_mul,
} from '../../src/domain';
import domain_plus from '../../src/doms/domain_plus';

pvdz

        Statement -> ExpressionStatement -> Expression -> AssignmentExpression ->
          AssignmentExpression -> ConditionalExpression -> LogicalORExpression -> LogicalANDExpression ->
          BitwiseORExpression -> BitwiseXORExpression -> BitwiseANDExpression -> EqualityExpression ->
          RelationalExpression -> ShiftExpression -> AdditiveExpression -> MultiplicativeExpression
        MultiplicativeExpression -> MultiplicativeExpression MultiplicativeOperator ExponentiationExpression
        MultiplicativeOperator -> one of * / %
        // We can match * on MultiplicativeOperator, continue left and right up to PrimaryExpression
        // proceeding to match the arrow on the right side
        ExponentiationExpression -> UnaryExpression -> UpdateExpression -> LeftHandSideExpression -> NewExpression ->

pvdz

let Solver = (function(){
// from: src/config.js



/**
 * @returns {$config}
 */
function config_create() {
  let config = {

pvdz

var e = document.createElement('div');
e.innerHTML = Array.from(document.body.querySelectorAll('a[href^="https://steamcommunity.com/market/confirmlisting/"]'))
  .filter(e => e.href.indexOf('cancel') < 0)
  .map(e => '<a href="'+e.href+'" onclick="p=this.parentNode;p.removeChild(this.nextElementSibling);p.removeChild(this);if(!p.children.length)p.parentNode.removeChild(p);">'+e.href+'</a><br>')
  .join('\n');
document.body.appendChild(e);
e.style.position = 'absolute';
e.style.top = 0;
e.style.backgroundColor='white';
e.style.border='1px solid black';