"TypeError: Cannot read property 'low' of undefined" - When running combine with pointMatchingDistance

I've been making great progress with maker.js but hit a problem now.

Makerjs version used: makerjs@^0.17.0

What did you try to do:

I was trying to use

    let options = {pointMatchingDistance: 0.006}
    makerjs.model.combine(modelA, modelB, false, true, false, true, options)

instead of just makerjs.model.combineUnion(modelA, modelB).

What happened:

TypeError: Cannot read property 'low' of undefined

Stack trace:

Uncaught TypeError: Cannot read property 'low' of undefined
    at Object.isMeasurementOverlapping (index.js:4877)
    at Object.onPath (index.js:3148)
    at walkRecursive (index.js:2898)
    at Object.walk (index.js:2929)
    at Object.onPath (index.js:3159)
    at walkRecursive (index.js:2898)
    at walkRecursive (index.js:2920)
    at walkRecursive (index.js:2920)
    at Object.walk (index.js:2929)
    at breakAllPathsAtIntersections (index.js:3177)
    at Object.combine (index.js:3314)
    at combineModel (DXFAnalyzer.ts:413)
    at recreateModel (DXFViewer.js:153)
    at DXFViewer.js:169
    at commitHookEffectList (react-dom.development.js:22010)
    at commitPassiveHookEffects (react-dom.development.js:22043)
    at HTMLUnknownElement.callCallback (react-dom.development.js:337)
    at Object.invokeGuardedCallbackDev (react-dom.development.js:386)
    at invokeGuardedCallback (react-dom.development.js:439)
    at flushPassiveEffectsImpl (react-dom.development.js:25379)
    at unstable_runWithPriority (scheduler.development.js:701)
    at runWithPriority$2 (react-dom.development.js:12231)
    at flushPassiveEffects (react-dom.development.js:25348)
    at react-dom.development.js:25227
    at workLoop (scheduler.development.js:645)
    at flushWork (scheduler.development.js:600)
    at MessagePort.performWorkUntilDeadline (scheduler.development.js:197)

Start by reproducing the call to makerjs.model.combine with pointMatchingDistance 0.006 and trace it through DXFAnalyzer.ts, DXFViewer.js, and the combine entry point. Inspect isMeasurementOverlapping and breakAllPathsAtIntersections around the reported stack frames; done means the call no longer throws and its behavior is covered by an appropriate regression test.