Serialise/Deserialise not working?

[tommed]

When running the reproduction code:

Reproduction

The following error occurs when loading from JSON:

node_modules\ml-distance-euclidean\euclidean.js:6 d += (p[i] - q[i]) * (p[i] - q[i]); ^ TypeError: Cannot read property '0' of undefined at squaredEuclidean (\node_modules\ml-distance-euclidean\euclidean.js:6:23) at euclidean (\node_modules\ml-distance-euclidean\euclidean.js:12:22) at nearestSearch (\node_modules\ml-knn\lib\index.js:66:33) at KDTree.nearest (\node_modules\ml-knn\lib\index.js:134:13) at getSinglePrediction (\node_modules\ml-knn\lib\index.js:384:36) at KNN.predict (\node_modules\ml-knn\lib\index.js:374:38) at Object. (index.js:30:23) at Module._compile (internal/modules/cjs/loader.js:689:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10) at Module.load (internal/modules/cjs/loader.js:599:32)